Sharp 21F-PA330I Service Manual
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Sharp 21F-PA330I Service Manual

Sharp 21F-PA330I Service Manual

Chassis ga-4
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In the interests of user-safety (Required by safety regulaton in some countries) the set should be restored to its original condition
and only part identical to those specified should be used.
PAL B/G System
g
Full Auto Channel Preset and Auto Channel Skip
g
100-CH Program Memory
g
CATV (Hyper Band) Ready
g
<Used Frequency Synthesizer Tuner>
Black Stretch Circuit
g
On Timer / Off Timer / Reminder Timer
g
Blue Back Noise Mute
g
Front AV IN & Rear AV IN / OUT Terminals
g
Front Headphone Jack
g
Aperture Control Circuit
g
SPECIFICATIONS...................................................
n
IMPORTANT SERVICE NOTES..............................
n
ADJUSTMENT PRECAUTIONS..............................
n
TROUBLE SHOOTING FLOWCHART....................
n
n
WAVEFROMS.........................................................
n
CHASSIS LAYOUT..................................................
n
n
MAIN UNIT.......................................................
g
CRT UNIT.........................................................
g
g
HEADPHONE UNIT.........................................
S-CONTROL UNIT...........................................
g
n
The chassis in this receive is partially hot. Use an isolation transformer between the line cord plug and
power receptable, when servicing this chissis. To prevent eletriv shock, do not remove cover. No user-
servieable parts inside. Refer servicing to qualified service personnel.
SHARP MENUFACTURING (THAILAND) CO.,LTD.

SERVICE MANUAL

MODEL
FEATURE
Auto Fine Tuning
g
Colour Comp Filter (NTSC Only)
g
High Contrast Picture
g
Hotel Mode
g
2 Language OSD
g
(English / Thai )
White Temperature Select
g
Component In
g
Surround Sound Effect
g
<With Bass / Treble / Balance>
AV Stereo
g
CONTENTS
Page
2
n
MAIN UNIT............................................
2
g
CRT UNIT..............................................
3
g
HEADPHONE UNIT...............................
13
g
S-CONTROL UNIT................................
15
g
PRITED WIRING BOAD ASSEMBLIES.......
16
n
REPLACEMENT PARTS LIST
17
n
ELECTRICAL PARTS............................
g
MISCELLANEOUS PARTS...................
18
g
ACCESSORIES PARTS.......................
19
g
CABINET PARTS..................................
19
g
PACKING PARTS..................................
20
g
21
WARNING
COLOUR TALEVISION
Chassis No. GA-4
21F-PA330
I
Page
22
23
23
24
25
29
33
33
33
34

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Summary of Contents for Sharp 21F-PA330I

  • Page 1: Table Of Contents

    The chassis in this receive is partially hot. Use an isolation transformer between the line cord plug and power receptable, when servicing this chissis. To prevent eletriv shock, do not remove cover. No user- servieable parts inside. Refer servicing to qualified service personnel. SHARP MENUFACTURING (THAILAND) CO.,LTD.

  • Page 2: Specifications

    SPECIFICATIONS Convergence......................Self Convergence System Focus.....................Electrostatic Focus High Bi-Potential IMPORTANT SERVICE NOTES Sweep Deflection..........................Magnetic Maintenance and repairing of this receiver should be done by qualified service Intermediate Frequencies Picture IF Carrier..........................38.9 MHz personnel only. Sound IF Carrier Frequency 6.5 MHz............................32.4 MHz 1.

  • Page 3: Adjustment Precautions

    VOL UP button on the set simultaniously for 5 secs. Intial values are automatically preset, only when SUB - TINT a new EPROM is used. 21F-PA330I SUB - COLOR The inital data are preset as listed in page 5-1 to 7-1.
  • Page 4 USER DATA IN SERVICE MODE After set the MCL to MCL4, pease set the INITIAL SETTING to INITIAL 9. INITIAL 9: For Thai (ALL channel Sound System are set to B/G) 1). While SERVICE mode ON,EEPROM DATA will swich to the service data. Also, once SERVICE mode OFF, EEPROM will swich back to previous USER DATA.
  • Page 5 SHIPPING SETTING & CHECKING **AFTER INITIALIZED THE EEPROM (REFER TO FACTORY PRESETTING), READ DATA FROM EEPROM ADDRESS 00H ~ 03H, AND COMPARE TO THE LIST BELOW, IF DEFERENT, INITIALIZE THE EEPROM. (1) The following default data has been factory-set for the E2PROM follow by INITIAL DATA selected. ADDRESS DATA ADDRESS...
  • Page 6 PRESS MENU KEY (x1) IN SERVICE MODE , LIST BELOW WILL APPEAR SETTING MODE (SECOND STAGE) SETTING MODE (SECOND STAGE) INITIAL SET UP INITIAL SET UP EEPROM ITEMS FUNCTION DATA LENGTH EEPROM ITEMS FUNCTION DATA LENGTH DATA (DEC) DATA (DEC) C.CLIP-LVL CLIP LEVEL CONTRAST CONTROL OF RGB INPUT VD2/VD1/AS/FBP-YUV...
  • Page 7 0~15 CB-PEDESTEL-SDJ R/C-MENU F139 SIF-PAL LED-CONT F140 -15~0~+15 AV2-BRIGHT-OFFSET S-BOOSTER SHARP-LOGO YUV BKGD ADJ WHITE BACK PRESS MENU (x2) IN SERVICE MODE, LIST BELOW WILL APPEAR BOOSTER MESSAGE CHECK MODE (THIRD STAGE) MESSAGE SCROLL TIME LNA TUNER ONE CHIP IC...

  • Page 8: Purity Adjustment

    ADJUSTMENT PRECAUTION: PURITY ADJUSTMENT Adjusting point Adjusting procedure/conditions Wavefrom and others Make sure TV Set is in “Normal Condition” before witch to service mode for adjustment. PURITY ADJ. Receive the GREEN-ONLY signal. Adjust the beam current to ~700 µA. Degauss the CRT enough with the degauss coil. PIF ADJUSTMENT Note: Follow the Job Instruction Sheet to adjust Adjusting point...

  • Page 9: Convergence Adjustment

    CONVERGENCE ADJUSTMENT H-VCO, VIF-VCO & S-TRAP for ADJUSTMENT Adjusting point Adjusting procedure/conditions Wavefrom and others Adjusting point Adjusting procedure/conditions Wavefrom and others CONVERGENC H-VCO ADJ (MANUAL ADJ) 1. Receive the “Crosshatch Pattem” signal. ADJ. (I2C BUS In No signal (RASTER) condition. 2.
  • Page 10 SCREEN, WHITE BALANCE, SUB-BRIGHTNESS & SUB-CONTRST ADJUSTMENT Adjusting point Adjusting procedure/conditions Wavefrom and others SUB- In Window Pattern Signal condition. Adjusting point Adjusting procedure/conditions Wavefrom and others CONTRAST WINDOW PATTERN SIGNAL SCREEN In window pattem signal condition. R-CUTOFF (R-C)UP RC key “1” (HEX 80) (to be done after Using Minolta Color Analyzer CA-100, let the gun ADJUSTMENT...
  • Page 11 PAL CHROMA ADJUSTMENT A/V INPUT, OUTPUT & COMPONENT IN CHECKING Adjusting point Adjusting procedure/conditions Adjusting point Adjusting procedure/conditions Wavefrom and others Wavefrom and others SUB-COLOUR Recive the “PAL Colour Bar “ signal VIDEO AND Receive the “PAL Colour Bar” signal (100%White (I2C BUS Press R/C to set Picture Normal condition.
  • Page 12 Adjusting point Adjusting procedure/conditions Wavefrom and others Adjusting point Adjusting procedure/conditions Wavefrom and others CH DISPLAY All Ch (1~99) will have an OSD display of the SOUND SYSTEM Receive “PAL-B/G” signal, press MENU, choose COLOUR channel number in green colour under AFT ON CH-SETTING to make sure there is NO sound system ondition.

  • Page 13: Trouble Shooting Flowchart

    TROUBLE SHOOTING FLOWCHART TROUBLE SHOOTING FLOWCHAT (Continued) NO RASTER CIRCUITS TO BE CHECKED: NO PICTURE, NO SOUND » Tuner. » PIF. » Automatic Gain Control. Check F701. Blown out. » (5V), (32V) Power Source. Does the noise level increase at max. Contrast, Brightness and Sound controls ? Replace the fuse.
  • Page 14 TROUBLE SHOOTING FLOWCHART (Continued) TROUBLE SHOOTING FLOWCHART (Continued) NEITHER VERTICAL NOR NO SPECIFIC COLOUR HORIZONTAL SYNCHRONIZATION Is some colour produced in CIRCUIT TO BE CHECKED: B/W broadcast reception ? » Sync. Separator Circuit. Check pins(5), (6), (10) and (11) of IC801. Is the white balance properly Check IC801.

  • Page 15: Solid State Device Base Diagram

    SOLID STATE DEVICE BASE DIAGRAM TOP VIEW COLLECTOR COLLECTOR P C 1 2 3 BASE EMITTER BASE EMITTER AT24W08 FXA003WJ C3928 A1530 CATHODE CATHODE ANODE ANODE EX1393C EX0263T M1501XN IMX1C/C M61266F S H A R P I X B 2 2 5 W J Z Z M61266F IMZ1A IXB225W...

  • Page 16: Wavefroms

    WAVE FROMS Service Manual 1) 0.976 Vp-p 2) 4.520 Vp-p 3) 4.760 Vp-p 4) 4.360 Vp-p 5) 6.12 Vp-p Horiz. Rate Horiz. Rate Horiz. Rate Horiz. Rate Horiz. Rate 6) 6.24 Vp-p 7) 1.80 Vp-p 8) 1.76 Vp-p 9) 5.63 Vp-p 10) 51.6 Vp-p Horiz.

  • Page 17: Chassis Layout

    CHASSIS LAYOUT...

  • Page 18: Block Diagrams

    BLOCK DIAGRAM PWB A : MAIN UNIT...

  • Page 19: Crt Unit

    PWB B : CRT UNIT PWB C : HEADPHONE UNIT...

  • Page 20: S-Control Unit

    PWB E : SOUND CONTROL UNIT...

  • Page 21: Description Of Schematic Diagram

    DESCRIPTION OF SCHEMATIC DIAGRAM NOTE : SAFETY NOTE : 1. The unit of resistance “ohm” is omitted. DISCONNECT THE AC PLUG FROM THE AC OUTLET BEFORE (K = 1000 ohm, M = Mage ohm). REPLACING PARTS. 2. All resistors are 1/16 watts, unless otherwise noted. µ...

  • Page 22: Schematic Diagram

    SCHEMATIC DIAGRAM PWB A : MAIN UNIT...
  • Page 23 PWB B : CRT UNIT PWB C : HEADPHONE UNIT...
  • Page 24 PWB E : SOUND CONTROL UNIT...
  • Page 25 PRINTED WIRING BOARD ASSEMBLIES PWB A : MAIN UNIT (COMPONENT SIDE)
  • Page 26 R J 3 8 R J 3 8 R J 1 5 R J 1 5 R 3 7 0 R 3 7 0 R J 1 4 R J 1 4 R 1 0 2 7 R 1 0 2 7 R J 1 6 R J 1 6 C 1 0 1 6...
  • Page 27 PWB B : CRT UNIT COMPONENT SIDE PWB C : HEADPHONE UNIT COMPONENT SIDE CHIP PART SIDE...
  • Page 28 PWB E : SOUND CONTROL UNIT COMPONENT SIDE CHIP PART SIDE...

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