Sony KD-34XBR2 Training Manual
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Sony KD-34XBR2 Training Manual

Direct view & projection tvs
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KD-34XBR2
Direct View
& Projection TVs
HA-3/RA-5A Chassis
Models:
KD-34XBR2
KDP-57XBR2
KDP-65XBR2
Troubleshooting Information
Course: CTV-29/TVP-12 (C29P12)
®
Training Manual
KDP-57XBR2

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Summary of Contents for Sony KD-34XBR2

  • Page 1 Training Manual ® KD-34XBR2 KDP-57XBR2 Direct View & Projection TVs HA-3/RA-5A Chassis Models: KD-34XBR2 KDP-57XBR2 KDP-65XBR2 Troubleshooting Information Course: CTV-29/TVP-12 (C29P12)

  • Page 2: Table Of Contents

    Table of Contents 1. Introduction ........1 10. Communications (HA-3 & RA-5A Chassis) ..... 36 Models Covered ..........1 11. Video Process Technical Highlights ......... 1 (HA-3 & RA-5A Chassis) ....40 2. New Features ........3 Overall Sync Path ........... 43 Menu ...............
  • Page 3 B. Power UP the G board removed from Testing for Dark Screen ........98 the TV chassis ..........82 22. Video Process C. Powering up the G board power supplies (RA-5A Chassis)......100 after parts replacements ......82 23. Board Replacement 20.

  • Page 4: Introduction

    Chart 1-1 - Related Model Number HA-3 Chassis Direct View TV Models RA-5A Chassis Projection TV Models KD-34XBR2 KDP -57XBR2 KDP-65XBR2 The “ D” in the model name refers to the digital decoder box built into the TV that can decode the 18 ATSC digital TV formats approved for the USA and Canada over the air transmission.
  • Page 5 HV power supply becomes active.  • There is no filament preheating from the primary power supply as in the similar Sony model KV32XBR400 (DX-1A chassis). The CRT filament voltage comes from the HOT.

  • Page 6: New Features

    2. New Features New Features Menu The video, screen mode and setup menus are new or have changed. The changes to the menu are explained below: Video Menu Video Refer to Figure 2-1 for a sample of the video menu. Picture Mode Vivid DRC Mode = Interlaced / Progressive / CineMotion –...
  • Page 7 2. New Features Telecine Conversion A, A, B, B, C, C, D, D, A, A A, B B, C C, C D, D 4 film frames (24 frames duplicated to 48 frames/sec to reduce flicker) Interlaced frame # Figure 2-4 - CineMotionProblem Film Film Distorted TV...

  • Page 8: Link

    In this early i Link acceptance stage, no digital video or audio input is possible with this TV. Communications with this TV is limited to operation with the Sony CableVision cable box currently used in NYC. Therefore, the following information shows how to connect i LINK devices and what this TV does with an i LINK connected device.
  • Page 9 Link device listed along with the DTV i Link device itself. Whenever you select that device from the list, the two will operate together. In this example, the output of Sony camcorders is a digital DV format.
  • Page 10 QI board facing you is the reset LED for the board. It lights up at reset. Reset occurs shortly at power ON and just before the memory stick information gets processed.  Fire Wire is a trademark of Apple Computer Inc.  i Link is a trademark of Sony.

  • Page 11: Dtv Signal Information

    3. DTV Signal Information DTV Signal Information Digital TV Transmissions In addition to receiving the current channel 2-69 NTSC format TV stations and channel 01-125 cable stations, these TV sets contain an extra tuner to receive off-the-air channel 01-99 Digital stations in the ATSC format. DTV channels 01-99 are mostly in the UHF band because the channel 2-13 VHF band is currently occupied with analog NTSC stations.

  • Page 12: Signal Quality

    3. DTV Signal Information Signal Quality You can also determine the quality of the received signal while still in the service mode. If the digital signal is correct, the decoder will process the information and output audio and video in sync. If there are sunspots, rain, or airplanes for example that can distort the signal the decoder will take longer to try to resolve the errors.

  • Page 13: Ha-3 Chassis Overall Block

    The HA-3 TV chassis is the first direct view TV that contains a DTV decoder. This decoder is identified as the “ Q” box and is a shielded assembly within the TV. Currently only the KD-34XBR2 model houses the HA-3 chassis.
  • Page 14 4. HA-3 Chassis Overall Block Video Processing This TV will accept standard resolution inputs or high-resolution inputs. Standard Resolution Input – A standard resolution signal could be selected from either analog tuner (NTSC) or any composite video 1-4 input. However, this high resolution TV runs at a different horizontal frequency of 33.75kHz than what is input.

  • Page 15: Power On Block (Ha-3 Chassis)

    5. HA-3 Chassis - Power ON Block HA-3 Chassis - Power ON Block Power Supplies There are four power supplies in the HA-3 direct view TV chassis. These are listed in Chart 5-1 below: Chart 5-1 - Model KD32XBR2 – HA-3 Chassis Internal Power Supplies Name Board Start...

  • Page 16: Standby Power Supply

    5. HA-3 Chassis - Power ON Block Each power supply is turned ON in the order listed. The standby power supply is operational when the TV is plugged into AC. When the TV is powered ON, the second and third supplies are turned ON one after the other. These supplies power the horizontal stages.
  • Page 17 5. HA-3 Chassis - Power ON Block STBY STBY Q522 IC001 (FRONT MAIN MICRO PANEL) M306V2MF POWER ON D BD. 45 44 (HA BD.) B BD. R017 R018 STBY 7V FROM PW C26 A26 C25 A25 SW.S01 SUB 12V REGULATORS (HA BD.) B+ OVP A BD.

  • Page 18: Tv Power On Sequence

    5. HA-3 Chassis - Power ON Block Output Voltages This secondary power supply produces the remainder of the low voltages to power the TV. These are listed in Chart 5-4. Chart 5-4 - Secondary Power Supply Load Output Protected Destination 200V Yes OCP D Board - HV Converter power supply...

  • Page 19: Primary Power Supply (Ha-3 & Ra-5A Chassis)

    6. Primary Power Supply - HA-3 & RA-5a Chassis Primary Power Supply (HA-3 & RA-5A Chassis) The Primary and Secondary power supplies are similar in operation. They differ in schematic nomenclature (component numbers) and output voltages. The HA-3 simplified secondary power supply is shown in Figure 6-1 for this description.

  • Page 20: Regulator Stage

    6. Primary Power Supply - HA-3 & RA-5a Chassis VC1 Powers IC6001 Although the oscillator is running, at this initial frequency of 200kHz there is insufficient current from T6002 to produce any unregulated 7V or 11V voltage because of the load. On the other hand, there is very little load on D6011 and D6012, so they output about 15V each at the cathodes (normally about 18Vdc).

  • Page 21: Testing

    6. Primary Power Supply - HA-3 & RA-5a Chassis In the following Waveform 6-1, both drive outputs from IC6001/pins 12 and 16 are shown (channels 1 and 2). The outputs are complementary, the duty cycle is 50% and the frequency has dropped down from 200kHz to 85kHz during normal operation.
  • Page 22 6. Primary Power Supply - HA-3 & RA-5a Chassis Chart 6-4 - IC6001 (MCZ3001D) Pin Description Pin - Description Pin - Description Name Name 1 - Sense ON/OFF input for the IC. IC ON = 1.5- 8 – VC1 Power for IC. Input voltage limits = 15.6V 7Vdc.

  • Page 23: Secondary Power Supply (Ha-3 & Ra-5A Chassis)

    7. Secondary Power Supply HA-3 & RA-5A Chassis Secondary Power Supply (HA-3 & RA-5A Chassis) The Primary and Secondary power supplies are similar in operation and circuitry using the same IC and driver/ output stage. They differ in schematic nomenclature and output voltages. The HA-3 simplified secondary power supply shown in diagram 24 contains the RA-5A chassis nomenclature in parentheses.

  • Page 24: Regulation

    7. Secondary Power Supply - HA-3 & RA-5A Chassis Chart 7-1 - Items Needed to Start the Secondary Power Supply Item Checkpoint (use Hot Gnd except noted) From Purpose HA-3 Direct View RA-5A PJ TV 340Vdc (B+) D board G board Bridge Rectifier D6530 Powers the Driver/Output CN6501/pin 1 / Fusible R6041...
  • Page 25 7. Secondary Power Supply HA-3 & RA-5A Chassis Chart 7-2 - Follow procedure 1-3 to locate PS Shutdown problem 1. Measure B+ at R6598 2. Measure 3. Problem area (0.27 ohms fusible at 1W) IC6501/pin 2 Voltage B+ is LOW or 0V Higher than 2V Oscillator stage IC6501 Lower than 2Vdc...

  • Page 26: Protection Block (Ha-3 Chassis)

    8. Protection Block (HA-3 Chassis) Protection Block (HA-3 Chassis) Refer to Figure 8-1 for the following overview of the protection circuits. When a failure occurs, this TV will protect the remainder of its circuitry in one of the following ways: •...

  • Page 27: Protection Circuits

    8. Protection Block (HA-3 Chassis) Chart 8-1 - Shutdown Causes Front of TV Stby Protected areas Check Normal CN6506 Point Ck Pt Blinks voltage CN6504 D Board +200V OCP Q8009/C 0.1Vdc (HV) / Over HV +135V OCP CN6506/ CN6506 pin 8 +135V OVP CN6506/ 0.1V...
  • Page 28 8. Protection Block (HA-3 Chassis) When D8014’ s voltage reaches a critical level, IC8001 outputs a HIGH for as long as the TV is powered ON. The HIGH passes through D8027 to trigger the Q6530/Q6532 latch that finally shuts off the TV set. 4.
  • Page 29 8. Protection Block (HA-3 Chassis) TV SHUTS OFF WITHIN 6 SECONDS OF POWER ON NO STANDBY LED DIAGNOSTIC INDICATION The following test for the video output ICs is With the TV OFF, unplug the C quick, but dangerous to the technician. In the Check Video Output board from the CRT.
  • Page 30 8. Protection Block (HA-3 Chassis) Standby light blinks two times – TV Shutdown There are two +135V OCP monitoring circuits. The first circuit will cause the Standby light to blink two times and the second will cause the light to blink seven times. Both sensing and output circuits are on the D board but the indicating circuit is on the B board.
  • Page 31 8. Protection Block (HA-3 Chassis) Standby light blinks three times – TV Shutdown Circuit – Referring to Figure 8-6, the maximum voltage the +135V line can rise to from the D board is +140V before the TV is shut down. IC6505 and Q6522 sense the danger and apply a voltage through D6537 when this limit is reached.
  • Page 32 8. Protection Block (HA-3 Chassis) Standby light blinks five times – Picture Blanked (dark), sound OK. Refer to Figure 8-8 for this circuit and testing. Circuit - Three IK pulses are measured by Y/C, CRT Drive as they return to IC201/pin 58. Each pulse corre- sponds to the efficiency of each CRT cathode and is used to adjust the RGB gain within IC3101 to maintain color balance while the TV is operating (dynamic adjustment).
  • Page 33 8. Protection Block (HA-3 Chassis) Standby light blinks six times – TV Shutdown Refer to Figure 8-9 for this circuit and testing. Circuit – IC001/pin 43 monitors the Q6.5Vdc from the Primary power supply (A Bd) to the Q box (QM and QI boards).
  • Page 34 8. Protection Block (HA-3 Chassis) A BD. B BD. 200V TO STBY LED RGB VIDEO CN002/ OUTPUT (C BD.) CN3022 R055 S DATA IC3101 IC001 Q5016 MAIN MICRO Y/C CRT DRIVE 200V CXA2150AQ M306V2MF S CLK R069 200V CN3103/ D5015 R024 CN001/ Q3111...

  • Page 35: (Ha-3 Chassis)

    9. High Voltage Power Supply High Voltage Power Supply This HV Converter is similar to the two low-voltage power supplies because they both have the same MCZ3001D ICs. This power supply differs only in the start up, voltage output and over voltage (OV) protection. The Flyback Output transformer of this power supply generates regulated 31.5kV and focus voltage for the CRT.

  • Page 36: Protection

    9. High Voltage Power Supply SHUTDOWN LATCH Q6530,Q6532 D8003 +200V R8051 (FROM D BD. Q8009 SECONDARY POWER R8053- SUPPLY) R8055 HV TO PICTURE SENSE IC8002 CONVERTER D8027 TUBE HV DRIVER TRANSISTORS (Q5030/C Q8002 MCZ3001D Q8001 FLYBACK FOCUS H OUT) C8004 H PULSES VOLTAGE START...

  • Page 37: Hv Adjustment

    9. High Voltage Power Supply by IC8001/A to output a LOW that keeps Q8003 turned OFF in normal operation. C8005 keeps IC8001/pin 7 LOW at turn ON when there is no HV, to prevent premature HV shutdown. If the HV drops low for a prolonged period because it is being loaded down or the screen is excessively bright, 33V zener D8025 turns OFF and inverts all the logic states listed above causing the HV to stop.

  • Page 38: Testing

    9. High Voltage Power Supply 4. Adjust HV RV8002 for 35.5kV (shutdown threshold). Use an accurate DVM with HV probe. 5. Adjust RV8001 until the set just shuts down. 6. Turn HV RV8002 CW to turn the set ON. Input a white signal. Bring the HV up to 35kV to make sure the set does not shut down.

  • Page 39: Communications (Ha-3 & Ra-5A Chassis)

    10. Communications Communications (HA-3 & RA-5A Chassis) There are three communications buses in the HA-3 Direct view chassis (Figure 10-2) and similar RA-5A pro- jection TV chassis (Figure 10-3): • RXD/TXD bus between the Q box and the Main Micro (B board). •...
  • Page 40 10. Communications RXD/TXD bus Normal Operation The individual RXD and TXD lines are active at: • TV power ON, • The end of a microprocessor program (periodic activity), and • When the Q box is needed. At power ON, there is bi-directional communications between the Main Micro (IC001) on the B board and the Digital Processor in the Q box.
  • Page 41 10. Communications Q BOX IC7205 S COMMUNICATIONS PROCESS DATA CN8801 CN005 IC8902 CN007 MID MICRO CN8601 CN002/ A10 = DATA CN3022 CN007 A11 = CLOCK B BD. CN1602 S DATA, CLK B CLK, IC001 DATA CN005 MAIN IC004 B COMMUNICATIONS MICRO DATA (RST)
  • Page 42 10. Communications B data and clock bus This data bus is a bi-directional bus connecting the Main Micro IC001 with the two Non-Volatile Memory (NVM) ICs. The data and clock lines are 4Vp-p and are always present as long as the TV is powered ON. On Screen Displays The main (white) menu comes from the Digital Processor Micro within the Q box.

  • Page 43: Video Process (Ha-3 & Ra-5A Chassis)

    • Component Level Repair Sony’ s direct view HA-3 TV chassis drives a 16x9 flat-faced picture tube. The acceptable inputs for this chassis are listed in Chart 11-1. Refer to Figure 11-1 for the video signal flow that follows. Chart 11-1 – HA-3 Input...
  • Page 44 11. Video Process - HA-3 and RA-5A Chassis Digital TV station Input QM board – Selecting a digital TV channel requires the communications of the Main Micro IC001 (B board) and Digital Processor IC7205 (QM board - not shown). At each channel up or down command, the Main Micro IC001 (B Bd.) asks Digital Processor IC7205 if the next station is an active DTV station.
  • Page 45 11. Video Process - HA-3 and RA-5A Chassis QM board – The main and sub video signals are both input to the MID circuitry, but the Main signal passes through the DRC circuit first. The DRC circuit increases the number of pixels of the standard resolution NTSC signal. The MID circuit selects one of three inputs (DTV, sub video, main video), then changes its input horizontal frequency (see Chart 11-2 for the possible input frequencies) and the aspect ratio to match the TV parameters.

  • Page 46: Overall Sync Path

    11. Video Process - HA-3 and RA-5A Chassis A board – The Y/C CRT Drive IC3101 converts the input video to RGB, mixes any OSD and outputs the combined signal to the CRT on the C board. In the twin picture mode, the DTV picture or video 5 or 6 high resolution input will always appear on the left side and never swap places.

  • Page 47: Board Replacement Repairs

    11. Video Process - HA-3 and RA-5A Chassis Chart 11-3 - Horizontal Sync Levels – Input is 15.735kHz NTSC at Video 1 Location Board Description Frequency Vp-p CN005/pin A8 Output - Main H from B board 15.735kHz 3.5Vp-p CN005/pin A4 Output - Sub H from B board 15.735kHz 3.6Vp-p...
  • Page 48 11. Video Process - HA-3 and RA-5A Chassis NTSC Twin View (Picture with Picture) Video Path When the Twin View (Picture with Picture) feature is selected, two pictures appear on screen side by side. Two video sources are chosen and two video paths are used to support these pictures. The main picture starts at the left side when the pictures are the same size.
  • Page 49 11. Video Process - HA-3 and RA-5A Chassis Flow Charts for locating a defective board In the Twin Picture Mode the main picture video signal path is always used to display the largest picture. To do this the MID circuit in the Q box and switching ICs on the B board may interchange paths depending upon which picture is the largest.
  • Page 50 11. Video Process - HA-3 and RA-5A Chassis IC7205, IC7603 QM BD. C BD. DTV TUNER MAIN SIGNAL PATH AND PROCESS NTSC INPUT/ TWIN IC8801 IC7806, IC8601 IC9001-3 IC7807 IC8703, IC8902 MID PROCESS NTSC OUTPUTS PROCESS MAIN MN-SB- CN8601/ PATH CN8801 CN005 A1-3...
  • Page 51 11. Video Process - HA-3 and RA-5A Chassis Chart 11-4 - Video Signal Levels - HA-3 Chassis, RA-5A Chassis Similar Signal Name Location Board Voltage Main tuner output A bd. CN002/pin B6 Input B 1Vp-p Composite video bars (gen. 1) Sub tuner output A bd.
  • Page 52 11. Video Process - HA-3 and RA-5A Chassis Waveform 11-2 shows the high-resolution output (ch 2-4) of the Q Box compared to the standard resolution (ch 1) color bar pattern composite input. The sync is doubled and the resolution is increased (density is higher). PM3394, FLUKE &...
  • Page 53 11. Video Process - HA-3 and RA-5A Chassis High Definition (HD) Video Path A high definition signal can come from the DTV tuner in the QM board or externally from the TV’ s rear video 5 or video 6. See Figure 11-10 for signal flow to each board and Chart 11-5 for a video path list. TUNER &...
  • Page 54 11. Video Process - HA-3 and RA-5A Chassis HD Twin View (picture with Picture) Video Path When a HD signal from the DTV tuner or Video 5 or 6 input is selected in Twin View, this HD picture will remain fixed at the left side of the screen.
  • Page 55 11. Video Process - HA-3 and RA-5A Chassis Chart 11-6 - HD Twin View Video Signal Path HD Signal Path NTSC Signal Path Stage Board Purpose Stage Board Purpose DTV Tuner Input = Outside Antenna Main NTSC Receives cable, or off the Tuner air TV stations Output = Component Video...

  • Page 56: Component Level Repair

    11. Video Process - HA-3 and RA-5A Chassis HIGH DEFINITION SINGLE PICTURE HAS A DEFECT IS THE DEFECT DEFECTIVE CIRCUIT SIMILAR FOR IS LOCATED ON[B] OR[U] ALL INPUTS BOARDS (V5, V6)? ACTIVATE THE SEE CONVERGENCE INTERNAL ADJUSTMENT OVERVIEW VIDEO GENERATOR CHAPTER CAN THE NEED TO TROUBLESHOOT...
  • Page 57 11. Video Process - HA-3 and RA-5A Chassis Video Process 1 The first Video Process (Figure 11-13) shows the composite and component video inputs to be NTSC processed on the B board. Chart 11-7 shows the signal flow and board input/output signal types. CN3022/ CN002 HD VIDEO 5,6...
  • Page 58 11. Video Process - HA-3 and RA-5A Chassis Chart 11-8 shows the main and sub video signal flow through the B board. Chart 11-8 – Video Process 1 Signal Flow Name Board Function Mode used IC401 A/V Sw Selects Main & Sub video inputs When NTSC inputs are selected Main Path IC501...
  • Page 59 11. Video Process - HA-3 and RA-5A Chassis SDA SCL IC8601 A/D IC8902 IC8703 MID-XA BUSY IC8901 MIDuCOM MB9489A88F ANALOG CN005/ IC7807 DRC CN8601 ANALOG VIDEO IC8601 FROM CXA3506R YO-7,RO-7,CO-7 IC200 A/D, SW COMP. IC7601 IC8703 DRAM MID-XA IC7604 IC7603 CONV.
  • Page 60 11. Video Process - HA-3 and RA-5A Chassis These three (Main, DTV and Sub) signals are input to MID IC8703. This MID IC will select either one input for normal TV operation or combine two inputs into a single picture for the Twin mode. The signal from MID IC8703 will continue into OSD IC8801.

  • Page 61: Dtv Tuner Processing For Dtv Box Repair

    11. Video Process - HA-3 and RA-5A Chassis DTV Tuner Processing for DTV Box Repair (HA-3 & RA-5A Chassis) Refer to Figure 11-9 for the location of connectors and Figure 11-16 for the DTV tuner support signal diagram. The DTV tuner needs various voltages for operation. They are easy to check at the Q box (CN7001). The DTV tuner receives the 8VSB modulation and delivers that signal to Digital microprocessor IC7205.
  • Page 62 11. Video Process - HA-3 and RA-5A Chassis There are two LEDs inside the Q box near the DTV tuner. The green LED lights when a DTV station contains the 8VSB modulation scheme. The red error LED lights when the DTV signal stream does not contain the basic ATSC ID bits in the digital data (wrong data –...

  • Page 63: Audio Block (Ha-3 Chassis)

    12. Audio Block Audio Block (HA-3 Chassis) Refer to the audio block Figure 12-1 for the description and board flow of the audio processing. Signal Flow • The audio input signal hops from the B board to the S, and finally to the A where the output amplifiers are located.
  • Page 64 12. Audio Block S Board Chart 12-1 shows the functions of all four ICs on the S board. Chart 12-1 - S Board ICs IC / Name Mode used Purpose IC4401 / TruSurround When TruSurround Produces the surround sound illusion when stereo sound is is selected from the input.

  • Page 65: Normal Signal Levels

    12. Audio Block Normal Signal Levels Refer to chart 12-3 for the audio signal levels throughout the audio chain. The audio signal is taken from a B&K 1064 NTSC pattern generator with 1kHz audio modulation input to the sub tuner’ s channel 3. The DTV audio level is the average volume sampled from four DTV stations.

  • Page 66: Firmware Upgrade (Ha-3 & Ra-5A Chassis)

    13. Firmware Upgrade Firmware Upgrade Each HA-3 direct view and RA-5A projection TV chassis contains a built-in DTV decoder. Although the main DTV format is set by the ATSC standard for the US and Canada, changes to the fine DTV transmission will take place as the format details are ironed out.
  • Page 67 13. Firmware Upgrade 3. IC7205 (QM Bd) uses TXD and RXD to communicate with Main Micro IC001 (B Bd). When IC7205 requests a memory upgrade operation, IC001 must interrupt the normal TV operation. Waveform 13-1 shows typical Q box to Main Micro IC001 (B Bd) bi-directional communications. Normally there is only periodic communications and then only when needed.
  • Page 68 13. Firmware Upgrade Chart 13-3 - IC001 Outputs to Reboot IC001 Output Location Voltage Grant CN8801/pin A1 (QM Bd) LOW (no upgrade) XRST CN8801/pin B2 (QM Bd) Momentary LOW 13. IC7205 informs IC001 the boot up is complete. 14. IC001 unblanks the CRT resuming normal TV operation. Upgrade error IC7205 pulses the rear panel LED D7204 to show an error code if: •...

  • Page 69: Ha-3 Tv Chassis Board Replacement

    14. HA-3 TV Chassis Board Replacement HA-3 TV Chassis Board Replacement Board Circuits Fuses Zeners After board Replacement Load Purpose Standby Power R6002 Primary PS D4415, +24V OVP No Adjustments Supply D4416 Audio Out Degaussing circuit D6017 6.8V for Primary Power pwr OFF A Supply (9V, 5V, mute...
  • Page 70 14. HA-3 TV Chassis Board Replacement Board Circuits Fuses Zeners After board Replacement Load Purpose Secondary Power R6236 Sec PS D6508=33V Reg Tuner Transplant memory Standby Power R6002 Primary PS D4415, +24V OVP No Adjustments Supply (+200V, voltage IC5501 containing PS6501, 24V Audio +135V)
  • Page 71 14. HA-3 TV Chassis Board Replacement * Enter the service mode from the remote control buttons: Display, Ch 5, Vol +, Power. See the Convergence Adjustment Overview chapter for more information about the service mode. ** After replacing the B board or Q box you will find that the plugs to CN8801 and CN8601 are the same. Cables from Q box to CN004 and CN005 should cross.

  • Page 72: Convergence Adjustment Overview (Ha-3 Chassis)

    15. Convergence Adjustment Overview - HA-3 Chassis Convergence Adjustment Overview – HA-3 Chassis HA-3 Adjustments are performed after CRT, D board or EEPROM replacement. The details are explained in the service manual. With so many details, the technician needs to get an overview of the adjustments so he can determine what he may see if his adjustment affects others.

  • Page 73: Convergence Adjustments - Overview

    15.Convergence Adjustment Overview - HA-3 Chassis Chart 15-1 - HA-3 Chassis Service Mode Categories Category NVM Data Purpose Copy Location (Board) Function ? Version Q Box Versions of ICs in box 3D-Comb Y/C separation parameters 2103 (1-2) NTSC pix parameters 2150P (1-4) CRT Drive settings 2150D (1-3)

  • Page 74: Data Copy Function

    15. Convergence Adjustment Overview - HA-3 Chassis Normal Mode Vertical Pincushion Zoom Mode 1. Vertical Size 2. Vertical Position Wide Zoom Mode 1. Vertical Center (Video) 4. Horizontal corner Pincushion 2. Vertical Size 5. Vertical Keystone 3. Horizontal Outer Pincushion High Definition 1080i Mode 1.

  • Page 75: Alternate Video 5/6 Input Path - Used For Troubleshooting Only

    15.Convergence Adjustment Overview - HA-3 Chassis Chart 15-2 - Generator Patterns Pattern Data # Data # for Data # Data # for for 1080i 480i for 480p 720p pattern pattern pattern pattern Black screen Cent Hatch Color Bars/B-W White Square Color Bars White 35, 37,40...
  • Page 76 15. Convergence Adjustment Overview - HA-3 Chassis TUNER & PROCESSOR QM BD. PROCESS RGB OUT TO C BD. IC002 COMPONENT VIDEO CRT DRIVE HIGH DEF HD INPUTS PASS-THROUGH SERVICE MODE ENABLED 480p U BD. 720p A BD. B BD. 1080i FIGURE 15-2 - HD VIDEO PATH 8/31/01 10TVP12 1328...

  • Page 77: Ra-5A Chassis

    RA-5A Chassis Board Layout...

  • Page 78: Overall Block

    17. RA-5A Chassis Overall Block RA-5A Chassis Overall Block The HA-3 Direct View TV Chassis and the RA-5A Projection TV chassis share almost identical B and Q boards (except for software), making the video processing flow the same. The two sets differ in the location of power supply and convergence stages.
  • Page 79 17. RA-5A Chassis Overall Block The vertical stage also starts on the A board, but does not deliver its drive signal into the D board without commu- nications from the Main Micro. The vertical oscillator IC3006 (A board) initially produces only vertical timing signals (VTIM is not shown) that are applied to Main Micro IC001 (B board).

  • Page 80: Power Supply Block

    18. RA-5A Chassis - Power Supply Block Power Supply Block (RA-5A Chassis) The RA-5A projection TV chassis is similar in operation to the direct view HA-3 chassis, but the layout is confined to one board for simplicity. Refer to Figure 18-1 for a description of the power supplies and the power ON sequence.

  • Page 81: Power Supplies

    18. RA-5A Chassis - Power Supply Block Power Supplies Chart 18-1 shows that there are four power supplies found in the RA-5A projection TV chassis. Each power supply starts one at a time dependent upon prior stage operations for safety. Chart 18-1 –...

  • Page 82: Power On

    18. RA-5A Chassis - Power Supply Block Chart 18-2 – Primary Power Supply Voltage Distribution G Bd to A Bd Primary PS Output Location A board Destination Output Final Destination Sub 6.5V (digital) CN6104/pin 8,9 CN3015/pin 1,2 6.5Vdc QM board CN7001/pin 1,2. 11Vdc CN6104/pin 1 IC3002 Regulator...
  • Page 83 18. RA-5A Chassis - Power Supply Block Chart 18-4 - Power On Sequence Step Action Verification 1. Press Power On Main Micro receives the command button 2. AC Relay activates Main Micro (B bd) activates AC relay RY6001 (G bd) G board CN6101/pin 4 = 5Vdc 3.

  • Page 84: G Board Tests

    G Board Tests (RA-5A Chassis) Unlike other Sony projection TV chassis, the power supply in the RA-5A chassis will operate unloaded when turned ON. There are several ways you can power the G board, depending upon how much time you have: The first method is the fastest: A.

  • Page 85: Power Up The G Board Removed From The Tv Chassis

    19. Projection TV RA-5A Chassis Power Supply Board Tests B. Powering Up the G board removed from the TV Chassis When the board is removed from the chassis, the micro that turns ON the two power supplies must be simulated. Two jumper wires must be installed - the first to bypass the AC relay and the second to enable the secondary power supply.
  • Page 86 19. Projection TV RA-5A Chassis Power Supply Board Tests 9. Place your scope at Q6009/Drain of the primary power supply. Gradually increase the Variac voltage. The square Waveform 19-1 will start at 16Vac and gradually increase in amplitude. Make sure the waveform is flat on the top and bottom and its Vp-p is at the same level as the DC voltage from main rectifier D6001.
  • Page 87 19. Projection TV RA-5A Chassis Power Supply Board Tests 18. Set the DC power supply to 16Vdc. More voltage (15.6Vdc) is required to start this IC because pin 18 is not connected to a Vcc source. 19. Plug the AC cord to the Variac and bring up the voltage slowly as with the primary power supply. The second- ary voltages in chart 2 will appear as you increase the AC input voltage.

  • Page 88: Protection Block (Ra-5A Chassis)

    20. RA-5A Chassis Protection Block Protection Block (RA-5A Chassis) Refer to Figure 20-1 for an overview of the protection circuits. When a serious problem occurs, this TV will protect the remainder of its circuitry and the picture tubes in one of the following ways: •...

  • Page 89: Protection Circuits

    20. RA-5A Chassis Protection Block Chart 20-1 summarizes the TV’ s seven protected areas. Use Chart 20-1 and Figures 20-2 and 20-3 to verify the signal that triggered the protection (shutdown). If no signal triggered the protection, suspect Micro IC001 on the B board and the latch transistors (Q6105/Q6119) on the G board of causing the TV shutdown.
  • Page 90 20. RA-5A Chassis Protection Block STANDBY 5V SOURCE T6003 R6064 R6111 STANDBY AC IN D6017 2.2k PH6004 Q6010 D6016 +15V (SEC P.S.) (SEC P.S.) R6065 R6112 R6060 +19V R6133 2.2k R6067 C6140 C6065 D6122 D6015 Q6101 Q6105 AC RELAY R6132 D6001 RY6001 D6125...
  • Page 91 20. RA-5A Chassis Protection Block 3. +19Vdc OCP – The 19Vdc line is from the secondary power supply. The load is the audio output stage. If the 19-volt line were loaded down, its voltage would drop. If it drops below 15Vdc, D6122 and Q6101 turn ON to trip the latch formed by Q6105 and Q6119.
  • Page 92 20. RA-5A Chassis Protection Block There is also a possibility that a simultaneous loss of communications from the B (IC001) to the A board (IC3006) and loss of horizontal drive will result in shutdown without a blinking LED, possibly from a broken or contaminated A board.
  • Page 93 20. RA-5A Chassis Protection Block 135V Current Sensing Circuit (G board) The 135V sensing circuit consists of R6118 and IC6102. R6118 is connected to the 135V line at the ground end. As the current along the 135V line increases, the voltage across R6118 becomes negative (similar to ABL volt- age).
  • Page 94 20. RA-5A Chassis Protection Block Testing - At power ON, verify +15v and -15V to the vertical output IC5004/pins 2 and 4. This voltage comes from the secondary power supply on the G board. Then look for vertical drive signal at CN8006/pin 3 and 5. It is possible to have reduced vertical deflection if one drive input is missing.
  • Page 95 20. RA-5A Chassis Protection Block LIMITER IC3701 R3071 OUTPUT R3069 VIDEO OUT TO RED R3068 R3070 TDA612OQ D3709 Q3054 R3066 +12V CR BD. Q3055 IC3014 R3726 Q3056 +12V N CH Q3053 CN3011 R3727 +12V FROM Q3702 220k R3067 R3729 CN3703 MAIN IK BUFF.
  • Page 96 20. RA-5A Chassis Protection Block SURGE QM BD. G BD. A BD. RELAY RY6002 CN6104/ CN3015 IC6002, CN3104 R6175 CN7001 D6130 L6102 T6004 PRIMARY 6.5V Q6115 D6133 SOURCE D6132 7.5V R6174 R6183 D6144 B BD. STBY PROT. Q6111 R6180 R6182 STBY Q6110 R6184...
  • Page 97 20. RA-5A Chassis Protection Block 11V (G BD.) +15V PROT.LATCH Q6105,Q6118 (G BD.) SOURCE IC3005 STBY LED REG. (HB BD.) D3026 R3287 Q3062 CN6103/ R3137 IC3021 CN3016 REG. C3186 Q522 R3288 D3009 CN013/ HORIZ. PULSE CN3022 DETECT. CIRCUIT 55 61 19 21 SCLK Q3037...

  • Page 98: High Voltage Stage (Ra-5A Chassis)

    21. RA-5A Chassis High Voltage Stage High Voltage Stage (RA-5A Chassis) HV Power Supply Start Up (Board level repairs) As shown in Chart 21-1, the HV stage starts when enabled by three inputs. Chart 21-1- HV Stage Inputs (for Starting) Name From Checkpoint...
  • Page 99 21. RA-5A Chassis High Voltage Stage Chart 21-2 explains the function of each block in the HV stage. Chart 21-2 - HV Block Operation Block Name Major component Purpose PWM Generator IC8008, Q8035, Provides regulated B+ supply voltage to the HV Output stage, Q9035 preventing picture width fluctuations.
  • Page 100 21. RA-5A Chassis High Voltage Stage PWM Regulator This stage controls the HV level by regulating the B+ voltage from Q8035. IC8008 starts when both 12Vdc and H drive pulses are input to pins 1 and 14 respectively. Pulses are output pin 3. The width of the pulse is dependent upon the error voltage input IC8008/pin 12.

  • Page 101: Testing For Dark Screen

    21. RA-5A Chassis High Voltage Stage Testing for Dark Screen A dark screen with normal sound can be caused by the items listed in Chart 21-3. Use Figure 21-3 of the D board in conjunction with Chart 21-3 to locate the test points. Chart 21-3 –...
  • Page 102 21. RA-5A Chassis High Voltage Stage Figure 21-4 provides the step-by-step troubleshooting procedure. Refer to Figure 21-3 for test point location. Dark Screen. Sound OK. Adj. controls according to service manual. Is there an IK line 1. HV is OK. in any CRT? 2.

  • Page 103: Video Process (Ra-5A Chassis)

    22. RA-5A Chassis Video Process Video Process (RA-5A Chassis) The Video processing for the projection TV chassis is almost identical to the HA-3 chassis. The difference is the A board. An AD board is a plug-in to the A board for convergence operation and the output connector is a different number.
  • Page 104 22. RA-5A Chassis Video Process The AD board generates the pattern as an RGB signal (CN3013/pin 1-3) that is sent to Video Processor IC3006 (A board). The RGB pattern is accompanied by a Ys switching signal from CN3012/pin 20. The Ys control signal from the AD board is normally 0Vdc, but goes to 5Vdc when the Flash Focus pattern or conver- gence pattern is called for.

  • Page 105: (Ra-5A Chassis)

    23. RA-5A PJ Chassis Board Replacement RA-5A Chassis Board Replacement Board Circuits Fuses Zeners After board replacement CRT (RGB) Driver R3024-IC3002- D3001-33V – tuner Transplant memory 9Vreg IC3013 containing H & V D3004-5.1V-IC3006/56 deflection parameters. Oscillators/Jungle R3077-neg15V line protect Both analog Tuners D3006-5.6V-Stby 5V OVP Deflection NVM IC3013 D3025-5.6V- Stby 5V...
  • Page 106 23. RA-5A PJ Chassis Board Replacement Board Circuits Fuses Zeners After board replacement CRT (RGB) Driver R3024-IC3002- D3001-33V – tuner Transplant memory Standby Power Supply F6001-10A-main D6016=AC input OVP No adjustments Primary Power Supply R6099-Prim PS D6121, D6126=15V OVP, 22VOCP (Sub 6.5V, 11V, 7V.) R6041-Sec PS D6133=Sub 6.5V OVP...
  • Page 107 23. RA-5A PJ Chassis Board Replacement B Bd. Main & Sub Sw Q Box Main Path CN005 Video Sub Path Inputs CN8801 CN004 CN8601 CN001 CN001 Figure 23-1 - HA-3 & RA-5A Video Path NVM Contents – Chart 23-1 Chart 23-1 - TV’ s Non Volatile Memory (NVM) Contents B board IC004 A board IC3013 AD board IC1607...
  • Page 108 APPENDIX...
  • Page 109 DIG TUNER CN7001 6.5V QI BD. PIN1 IS VOLT. CLOSEST TO FROM THE BACK A BD. B BOARD OF THE TV QM BD. CN6005 PLUGS INTO CN2002 & 3 2 CH. AUDIO BACK OF TV (HA-3) CN7402 AUDIO (RA-5) CN3173 CN5501 TO B BD.,CN009 GRAY...
  • Page 110 Q BOX IC7205 PROCESS CN8801 IC8902 MID MICRO CN8601 A10 = DATA CN007 A11 = CLOCK N/C S DATA, CLK B BD. B CLK, S COMMUNICATIONS IC001 DATA DATA CN005 MAIN IC004 CN005 MICRO CN007 (RST) CN4402 CN004 STBY CN6506 CN5501 CN2003 CN002...
  • Page 111 RA-5A Chassis D Board Tests RA-5A Chassis D Board Tests Many voltages from the G board are delivered to the D board (CN8013 in Figure 24-1) for deflection use. The 135V path continues into the A and V boards. A short on the D board will load down the power supply, but the D board can be quickly tested for shorts.

  • Page 112: Physical Video/Sync Path (Ra-5A Chassis)

    RA-5A Chassis D Board Tests B BD. Q BOX U BD. CN7001 Y - A CN005 CN003 INPUTS VIDEO 1 VIDEO 6 VIDEO CN7402 Y = A15 PROCESS Y - A = A16 = A17 MAIN MAIN Y - A TUNER TUNER VIDEO...
  • Page 113 Sony Service Company A Division of Sony Electronics Inc ©2001 All Rights Reserved Printed in U.S.A. is a trademark of Sony Electronics SEL Service Company A Division of Sony Electronics Inc. 09/07/01 C29P12901 1 Sony Drive Printed in U.S.A. Park Ridge, New Jersey 07656...

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