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ORDER NO. MTNC010941C1 Service Manual Color Television/Monitor/Receiver Main Manual (NA7D) Panasonic Models Chassis CT-1388YD JP358 CT-1389VYD KP358 CT-2088YD VP360 CT-2089VYD WP360 CT-2788YD GP363 CT-2789VYD HP363 This Service manual is issued as a service guide for the models of the NA7D family listed above. Included in this manual are a set of schematics, block diagrams, functional descriptions, alignment procedures, disassembly procedures, and a complete parts list.
Important Safety Notice Special components are used in this television set which are important for safety. These parts are identified on the schematic diagram by the symbol and printed in BOLD TYPE on the replacement part list. It is essential that these critical parts are replaced with the manufacturer’s specified replacement part to prevent x-ray radiation, shock, fire or other hazards.
Service notes Note: These components are affixed with glue. Be careful not to break or damage any foil under the component or at the pins of the ICs when removing. Usually applying heat to the component for a short time while twisting with tweezers will break the component loose.
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Service Notes (continued) IMPORTANT: To protect against possible damage to Procedure: the solid state devices due to arcing or static discharge, 1. Connect receiver to isolator transformer. make certain that all ground wires and CTR DAG wire 2. Apply a monoscope pattern. are securely connected.
Receiver feature table FEATURE\MODEL CT-1388YD CT-1388VYD CT-2088YD CT-2089VYD Chassis No JP358 KP358 VP360 WP360 Family NA7D NA7D NA7D NA7D Tuning block No of channels NO TUNER NO TUNER Menu language English / Spanish English / Spanish English / Spanish English / Spanish...
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Receiver feature table FEATURE\MODEL CT-2788YD CT-2789VYD Chassis No GP363 HP363 Family NA7D NA7D Tuning block # of channels NO TUNER Menu language English / Spanish English / Spanish Closed caption V-Chip 75 Ω input Remote control TV Only Picture tube supplier AMEC AMEC Comb filter...
Location of controls (receiver) Figure 2. Location of controls (receiver) -- CT-2789VYDE. POWER VOLUME CHANNEL ACTION TV/VIDEO Remote Control HPJ & A/V Sensor Jacks (Actual appearance may vary) Quick reference control operation Quick reference control operation POWER button - Press to turn ON or OFF. VOLUME buttons - Press to adjust sound level, or to adjust audio menus, video menus, and select operating features when menus are displayed CHANNEL buttons - Press to select programmed channels.
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Location of controls (remote) Cont. (for models with remote control) POWER button Press to turn ON and OFF. MUTE button Press to mute sound. A second press resumes sound. Press also to access and delete closed caption display. TV/VIDEO button Press to select TV or Video input.
Disassembly for service Back cover C-Board - CRT output Plugs into the socket on the CRT neck. Remove all the screws marked with an arrow( To release the focus wire, use a flat tool to release from the back of the receiver, see Fig. 7. the tab in the socket, see Fig.
CRT replacement To remove and remount the dag ground braid: a.Unhook the coil spring from the upper right 1. Perform disassembly replacement corner of the CRT. procedure. b.Release the braid loop from the lower left corner 2. Insure that the CRT H.V. Anode button is of the CRT.
Back cover disassembly Figure 7. Back cover removal (20” tuner model) • 2 screw at the top edge • 1 screw in each lower corner • 6 screw by the A/V board IMPORTANT After servicing the receiver, remember to dress the cables a shown above. - 12 -...
Main components location (Secured to cabinet Anode (HIGH VOLTAGE) by 4 screws on corners) Deflection yoke Convergence yoke Yoke Degaussing wedge coil Speakers secured by screws Chassis rail (some models) A-Board Tuner S-VHS C-Board Flyback Dag ground Main chassis In/Out jacks CRT panel Figure 8.
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Main components location Q351 GROUND IC001 IC050 RED OUT HALF TONE Socket MPU/VCJ Q352 GREEN OUT Q353 BLUE OUT IC002 EEPROM IC003 IC801 IC451 Remote sensor VCO( ) Vertical out IC551 9V REG IC552 5V REG H.OUT D801( ) F801 RELAY TNR001 IC2302...
Chassis service adjustment procedures All service adjustments are factory preset and should not require adjustment unless controls and/or associated components are replaced. Note: Connect the (-) lead of the voltmeter to the appropriate ground. Use IC801’s heat sink when the HOT ground symbol ( ) is used.
Purity and convergence procedure Adjustment is necessary only if the CRT or the For a 1-piece assembly (see Fig. 14): deflection yoke is replaced or if the setting was Position like tabs of purity devices together at 12 disturbed. The complete procedure consists of: o’clock to reduce any magnetic field effect.
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Initial center static convergence magnet rings to set vertical green raster at center of screen (see Fig. 16). Connect a dot/cross hatch generator to the receiver Gradually move the deflection yoke & purity rings and tune in a signal. Observe misconvergence at forward and adjust for best overall green screen.
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As the yoke is tilted vertically, the rasters produced outside guns rotate in opposite directions. Figure 17. Vertical yoke movement Raster produced from one of the outside electron beams Raster from the other side electron beam R G B Static convergence magnets are set for center convergence As the yoke is tilted horizontally, one raster gets larger while the other gets...
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Service mode (electronic controls) This receiver has electronic technology using the I²C bus concept. It performs as a control function and it replaces many mechanical controls. Instead of adjusting mechanical controls individually, many of the control functions are now performed by using “on screen display Menu”. (The service adjustment mode) Note: It is suggested that the technician reads all the way through and understand the following procedure for entering/exiting the service adjustment mode;...
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IMPORTANT Registers marked as FIXED in the following tables, are factory preset, service personnel should not change the default value. Press the power button on the remote control to select the service adjustment. For adjustments: 1.Press channel Up/Down on the Note: Write down the original 2.Press volume Up/Down on the remote control to select one of...
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Default OPTIONS (PICTURE) Adjustment Adj. Range Level FIXED COMB BPF COMB 2D FIXED COLOR KILLER LEVEL FIXED PLL KILLER TRESH FIXED ACC SW FIXED To Item S00 FIXED ACC AMP OFF 1 ACC AMP OFF 2 FIXED ACC AMP ON FIXED FIXED ACC AMP CTL...
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Default VCJ Adjustment Adj. Range Level TH ON1 FIXED To Item P00 TH ON2 FIXED FIXED TH ON3 CURVE1 FIXED CURVE2 FIXED CURVE3 FIXED RATIO1 FIXED RATIO2 FIXED RATIO3 FIXED To B Items IMPORTANT NOTE: Always exit the service mode following adjustments.
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Check purity: In service mode (red “CHK” is displayed), place a jumper in AG connector, press the recall button on the remote control to enter to the white purity field check, remove the jumper, press recall again to get to red, green and blue purity fields (if jumper is not removed for color fields, they will be displayed with higher luminosity), In aging mode ( factory mode , yellow “chk”...
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Instructional flow chart for service mode NORMAL MODE IMPORTANT NOTE: Always exit the service mode following adjustments. Momentarily short FA1 to FA2 ( AGING MODE • Yellow “CHK” appears in upper left corner of screen. WHITE • Volume Up/Down operate rapidly. SCREEN •...
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Instructional flow chart for serviceman mode - (continued) USE VOL TO SET THE VALUE CUT-OFF ADJUSTMENTS. C ITEMS. C ITEMS CUT-OFF ADJUSTMENTS Adj. needed? (No remote models) CH up/down on TV (No remote models) POWER on TV (ON REMOTE) POWER USE VOL TO SET THE VALUE (ON REMOTE)
Service adjustments (electronic controls) Note: It is recommended to allow a 30 min. warm Sub-Brightness up at highest bright (using white screen) before Service DAC (B02) perform any picture adjustment. Due to the characteristics of this chassis, Sub- Brightness adjustment is no required. To obtain a good Sub-Contrast brightness level in the picture, set the service register to the default level: 127.
Service adjustments (electronic controls, continued) White balance 11. Select blue Cut-Off (C02) register, press R-Tune to close the vertical and see the yellow line, for Service DACs (C00) (C01) (C02) (C03) (C04) (C05) models with no remote press ACTION on TV when Preparation: DAC is displayed on screen.
Service adjustments (electronic controls, continued) Sub-Brightness final adjustment Vertical size Service DAC (B03) Service DAC (C06) Perform this adjustment at the end. After all picture Preparation: Connect a monoscope pattern. adjustments. Procedure: Preparation: 1. In the service mode select vertical size adjustment 1.
Service adjustments (electronic controls, continued) Stereo separation adjustment 7. Exit Service Mode. Turn off the set. Remove all connections from chassis. (M01 & M02) (stereo models only) Preparation: Clock adjustment 1. Connect an RF signal generator to the RF antenna Service DAC (X03) input.
REPLACEMENT PARTS LIST Models: CT-1388YD, CT-1389VYD, CT-2088YD, CT-2089VYD, CT-2788YD & CT-2789VYD Important Safety Notice: Components printed in BOLD TYPE have special characteristics important for safety. When replacing any of these components use only manufacturer’s specified parts. PART NO. DESCRIPTION PART NO.
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REPLACEMENT PARTS LIST Models: CT-1388YD, CT-1389VYD, CT-2088YD, CT-2089VYD, CT-2788YD & CT-2789VYD Important Safety Notice: Components printed in BOLD TYPE have special characteristics important for safety. When replacing any of these components use only manufacturer’s specified parts. PART NO. DESCRIPTION PART NO.
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REPLACEMENT PARTS LIST Models: CT-1388YD, CT-1389VYD, CT-2088YD, CT-2089VYD, CT-2788YD & CT-2789VYD Important Safety Notice: Components printed in BOLD TYPE have special characteristics important for safety. When replacing any of these components use only manufacturer’s specified parts. PART NO. DESCRIPTION PART NO.
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REPLACEMENT PARTS LIST Models: CT-1388YD, CT-1389VYD, CT-2088YD, CT-2089VYD, CT-2788YD & CT-2789VYD Important Safety Notice: Components printed in BOLD TYPE have special characteristics important for safety. When replacing any of these components use only manufacturer’s specified parts. PART NO. DESCRIPTION PART NO.
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REPLACEMENT PARTS LIST Models: CT-1388YD, CT-1389VYD, CT-2088YD, CT-2089VYD, CT-2788YD & CT-2789VYD Important Safety Notice: Components printed in BOLD TYPE have special characteristics important for safety. When replacing any of these components use only manufacturer’s specified parts. PART NO. DESCRIPTION PART NO.
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REPLACEMENT PARTS LIST Models: CT-1388YD, CT-1389VYD, CT-2088YD, CT-2089VYD, CT-2788YD & CT-2789VYD Important Safety Notice: Components printed in BOLD TYPE have special characteristics important for safety. When replacing any of these components use only manufacturer’s specified parts. PART NO. DESCRIPTION PART NO.
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REPLACEMENT PARTS LIST Models: CT-1388YD, CT-1389VYD, CT-2088YD, CT-2089VYD, CT-2788YD & CT-2789VYD Important Safety Notice: Components printed in BOLD TYPE have special characteristics important for safety. When replacing any of these components use only manufacturer’s specified parts. PART NO. DESCRIPTION PART NO.
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REPLACEMENT PARTS LIST Models: CT-1388YD, CT-1389VYD, CT-2088YD, CT-2089VYD, CT-2788YD & CT-2789VYD Important Safety Notice: Components printed in BOLD TYPE have special characteristics important for safety. When replacing any of these components use only manufacturer’s specified parts. PART NO. DESCRIPTION PART NO.
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REPLACEMENT PARTS LIST Models: CT-1388YD, CT-1389VYD, CT-2088YD, CT-2089VYD, CT-2788YD & CT-2789VYD Important Safety Notice: Components printed in BOLD TYPE have special characteristics important for safety. When replacing any of these components use only manufacturer’s specified parts. PART NO. DESCRIPTION PART NO.
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REPLACEMENT PARTS LIST Models: CT-1388YD, CT-1389VYD, CT-2088YD, CT-2089VYD, CT-2788YD & CT-2789VYD Important Safety Notice: Components printed in BOLD TYPE have special characteristics important for safety. When replacing any of these components use only manufacturer’s specified parts. PART NO. DESCRIPTION PART NO.
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REPLACEMENT PARTS LIST Models: CT-1388YD, CT-1389VYD, CT-2088YD, CT-2089VYD, CT-2788YD & CT-2789VYD Important Safety Notice: Components printed in BOLD TYPE have special characteristics important for safety. When replacing any of these components use only manufacturer’s specified parts. PART NO. DESCRIPTION PART NO.
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REPLACEMENT PARTS LIST Models: CT-1388YD, CT-1389VYD, CT-2088YD, CT-2089VYD, CT-2788YD & CT-2789VYD Important Safety Notice: Components printed in BOLD TYPE have special characteristics important for safety. When replacing any of these components use only manufacturer’s specified parts. PART NO. DESCRIPTION PART NO.
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SCHEMATIC NOTES: 1. RESISTOR All resistors are carbon 1/4W resistor, unless otherwise noted by the following marks. Unit of resistance is ohm (Ω), (K=1,000, M=1,000,000) Non Flammable Solid Metal Oxide Metal (Precision and high stability) Wire Wound Thermistor Fusible Positive coefficient Thermistor Flame Proof Rectangular 2.