Sharp 21F-PA18 Service Manual
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Sharp 21F-PA18 Service Manual

Colour television sharp 21f-pa18/ 21f-pa18(b)/ 21f-pd250/ 21f-pt220
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21F-PT220
In the interests of user-safety (Required by safety regulations in some countries) the set should be restored to its original condition and
only parts identical to those specified should be used.
PAL-B/G, D/K
Frequency Synthesizer Tuner
Full Auto System
100-CH Program Memory
CATV (Hyper Band Ready)
Hotel Mode
CHAPTER 1. SPECIFICATIONS
[1]
SPECIFICATIONS ......................................... 1-1
[1]
Important Service Notes .................... 2-1
CHAPTER 3. ADJUSTMENT PRECAUTIONS
[1]
ADJUSTMENT PRECAUTIONS .................... 3-1
[2]
ADJUSTMENT ............................................. 3-14
[1] MEMORY MAP...................................................
[1]
TROUBLE SHOOTING FLOWCHART .......... 5-1
[1]
SOLID STATE DEVICE BASE DIAGRAM..... 6-1
CHAPTER 7. CHASSIS LAYOUT
[1]
CHASSIS LAYOUT ....................................... 7-1
The chassis in this receiver is partially hot. Use an isolation transformer between the line cord plug and power receptacle, when servicing
this chassis. To prevent electric shock, do not remove cover. No user-serviceable parts inside. Refer servicing to qualified service personnel.
SHARP MANUFACTURING (THAILAND) CO.,LTD.
1st Edition

SERVICE MANUAL

21F-PA18
21F-PA18(B)

FEATURES

White Temperature Select
Off Timer
Blue Back Function
Aperture Control Circuit
Auto Fine Tuning
NTSC Colour Comb Filter
CONTENTS
4-1
WARNING
21F-PD250 / 21F-PT220 / 21F-PA18 / 21F-PA18(B)
COLOUR TELEVISION
21F-PD250
High Contrast Picture ( Black Stretch Circuit)
Child Lock
Multi Languages OSD (English/Thai)
Rear AV IN / OUT Terminals
Front AV-IN Terminal (Model 21F-PT220)
[1]
BLOCK DIAGRAM : MAIN UNIT................... 8-1
[2]
BLOCK DIAGRAM : CRT UNIT ...................... 8-9
GRAM
[1]
CHAPTER 10. WAVEFORMS
[1]
WAVEFORMS ............................................... 10-1
[1]
SCHEMATIC DIAGRAM : CRT UNIT ............ 11-1
[2]
SCHEMATIC DIAGRAM : MAIN UNIT .......... 11-2
BLIES
[1]
PWB-A : MAIN UNIT ..................................... 12-1
[2]
PWB-B : CRT UNIT ....................................... 12-3
Chassis No.GA-7
21F-PA18
21F-PA18(B)
21F-PD250
21F-PT220

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Summary of Contents for Sharp 21F-PA18

  • Page 1: Service Manual

    21F-PD250 / 21F-PT220 / 21F-PA18 / 21F-PA18(B) 1st Edition SERVICE MANUAL COLOUR TELEVISION Chassis No.GA-7 21F-PA18 21F-PA18(B) 21F-PD250 21F-PT220 21F-PA18 21F-PD250 21F-PT220 21F-PA18(B) In the interests of user-safety (Required by safety regulations in some countries) the set should be restored to its original condition and only parts identical to those specified should be used.

  • Page 2: Specifications

    5.5MHz ............................33.4MHz Colour Sub-Carrier Frequency ......................34.47MHz Power Input ........................110 ~ 240V AC 50/60 Hz Power Consumption ............................Audio Power Output Rating ............... 21F-PA18 & 21F-PA18(B) : 3W (rms) 21F-PD250 & 21F-PT220 : 5W (rms) Speaker Size ....................21F-PA18 & 21F-PA18(B) : 5 x 9 cm (1 pc) 21F-PD250 &...

  • Page 3: Important Service Notes

    21F-PD250 / 21F-PT220 / 21F-PA18 / 21F-PA18(B) CHAPTER 2. IMPORTANT SERVICE NOTES [1] IMPORTANT SERVICE NOTES Maintenance and repair of this receiver should be done by qualified service personnel only. 1. SERVICE OF HIGH VOLTAGE SYSTEM AND PICTURE TUBE When servicing the high voltage system, remove static charge from it by connecting a 10K ohm resistor in series with an insulated wire (such as a test probe) between picture tube dag and 2nd anode lead.

  • Page 4: Chapter 3. Adjustment Precautions 1] Adjustment Precautions

    21F-PD250 / 21F-PT220 / 21F-PA18 / 21F-PA18(B) CHAPTER 3. ADJUSTMENT PRECAUTIONS [1] ADJUSTMENT PRECAUTIONS ADJUSTMENT PRECAUTIONS This model's setting are adjusted in two different ways: through the I2C bus control and in the conventional analog manner. The adjustments via the I2C bus control include preset-only items and variable data.
  • Page 5 21F-PD250 / 21F-PT220 / 21F-PA18 / 21F-PA18(B) 1. ADJUSTMENT ITEM ***Below are the adjustment items that should be done, PLS FOLLOW THE PROCEDURE. Otherwise some adjustment items will not be accurate. NO *** ADJUSTMENT ITEM EFFECTIVE MODEL REVISION BUS SET UP...
  • Page 6 21F-PD250 / 21F-PT220 / 21F-PA18 / 21F-PA18(B) 2. USER DATA IN SERVICE MODE 1) While SERVICE mode ON, EEPROM DATA will switch to the service data. Also, once SERVICE mode OFF, EEPROM will switch back to previous USER DATA. 2) In the service mode, the user data establish as below,...
  • Page 7 21F-PD250 / 21F-PT220 / 21F-PA18 / 21F-PA18(B) 1) Please set the MCL to MCL4 as below : 2) After set the MCL, please set the INITIAL SETTING to INITIAL 9. INITIAL 9 : For Thai ( All Channel Sound System are set to B/G )
  • Page 8 21F-PD250 / 21F-PT220 / 21F-PA18 / 21F-PA18(B) SHIPPING SETTING & CHECKING (1) The following default data has been factory-set for the E2PROM follow by INITIAL DATA selected. ITEMS DATA SETTING MODEL LAST POWER LAST TV/AV MODE TV MODE LAST POSITION...
  • Page 9 21F-PD250 / 21F-PT220 / 21F-PA18 / 21F-PA18(B) **AFTER INITIALIZED THE EEPROM (REFER TO FACTORY PRESETTING), READ DATA FROM EEPROM ADDRESS 00H ~ 03H,AND COMPARE TO THE LIST BELOW, IF DIFFERENT, INITIALIZE THE EEPROM. ADDRESS DATA ADDRESS DATA 00H: 02H: 01H: 03H: *** There are four stages of service mode data.
  • Page 10 21F-PD250 / 21F-PT220 / 21F-PA18 / 21F-PA18(B) SETTING MODE (SECOND STAGE) DATA LENGTH INITIAL DATA FIX/ADJ/AUTO EEPROM ITEMS FUNCTION REMARK C.CLIP-LVL CLIP LEVEL CONTRAST *FIX BUS SETUP 0 (20H)/ 1(40H) CONTROL OF RGB INPUT RGB-CLIP CLIPPING OF RGB CONTRAST 0 (enable)/...
  • Page 11 21F-PD250 / 21F-PT220 / 21F-PA18 / 21F-PA18(B) SETTING MODE (SECOND STAGE) DATA LENGTH INITIAL DATA FIX/ADJ/AUTO EEPROM ITEMS FUNCTION REMARK 1W-TV VERT SYNC DETECTION MODE FOR AV (1 WINDOW/2 WINDOW) 0 (2W)/ 1(1W) 1W-AV VERT SYNC DETECTION MODE FOR TV (1 WINDOW/2 WINDOW)
  • Page 12 21F-PD250 / 21F-PT220 / 21F-PA18 / 21F-PA18(B) SETTING MODE (SECOND STAGE) DATA LENGTH INITIAL DATA FIX/ADJ/AUTO EEPROM ITEMS FUNCTION REMARK S-BOOSTER FREQ. 0~255 CHARACTERISTIC CONTROL MEL1 S-BOOSTER LEVEL1 0~255 MEL2 S-BOOSTER LEVEL2 0~255 MEL3 S-BOOSTER LEVEL3 0~255 MEL4 S-BOOSTER LEVEL4...
  • Page 13 21F-PD250 / 21F-PT220 / 21F-PA18 / 21F-PA18(B) SETTING MODE (SECOND STAGE) DATA LENGTH EEPROM ITEMS FUNCTION INITIAL DATA FIX/ADJ/AUTO REMARK BRIGHT MOVIE BRIGHTNESS SETTING- MOVIE F149 -30..0..+30 COL NEWS F150 -30..0..+30 *FIX BUS SETUP COLOUR SETTING- NEWS F151 COL MUSIC COLOUR SETTING- MUSIC -30..0..+30...

  • Page 14: Disable) / 1 (Enable) 0

    21F-PD250 / 21F-PT220 / 21F-PA18 / 21F-PA18(B) OPTION MODE (FOURTH STAGE) EEPROM ITEMS DATA LENGTH INITIAL DATA REMARK ***HOTEL MODE 0 (0FF) / 1 (0N) OPTION SET UP ***HTL-POS 0~99,-- OPTION SET UP ***HTL-VOL 0~60,-- OPTION SET UP VIF-NOT-USE 0 (38.0) / 1 (38.9)
  • Page 15 21F-PD250 / 21F-PT220 / 21F-PA18 / 21F-PA18(B) ADJ ITEM: BUS SET UP (1 ST & 2ND STAGE SERVICE DATA) ALL MODELS SERVICE ITEMS REMARK SUB-SHP PRE SUB-COLOR-YUV SUB-TINT-YUV V-SIZE60 V-SHIFT60 VS-CORRECT ADJUST IF NECESSARY VC-CORRECT OFFSET TO IMPROVE V LINEARITY...
  • Page 16 21F-PD250 / 21F-PT220 / 21F-PA18 / 21F-PA18(B) ADJ ITEM: OPTION SET UP (4TH STAGE SERVICE DATA) 21F-PA18 SERVICE ITEMS 21F-PT220 21F-PA18(B) 21F-PD250 HTL MODE 0 (0FF) / 1 (0N) HTL-POS 0~99,-- 0~60,-- HTL-VOL HSYNC-JUDGE 0 (DISABLE) / 1 (ENABLE) SECAM...

  • Page 17: Adjustment

    21F-PD250 / 21F-PT220 / 21F-PA18 / 21F-PA18(B) [2] ADJUSTMENT ADJUSTMENT PRECAUTION: Makesure TV Set is in “Normal Condition” before switch to Service Mode for Adjustment. 1. PIF ADJUSTMENT Adjustment point Adjustment procedure/conditions Waveform and others Tuner IFT 1. Get the tuner ready to receive the CH. E - 9 ( PRESET ) signal,but with no signal input.
  • Page 18 21F-PD250 / 21F-PT220 / 21F-PA18 / 21F-PA18(B) 2. PURITY ADJUSTMENT Adjustment point Adjustment procedure/conditions Waveform and others PURITY ADJ. 1. Receive the GREEN-ONLY signal. Adjust the beam current to ~700 µA . (No need if used 2. Degauss the CRT enough with the degausing coil.
  • Page 19 21F-PD250 / 21F-PT220 / 21F-PA18 / 21F-PA18(B) 3. CONVERGENCE ADJUSTMENT Adjustment point Adjustment procedure/conditions Waveform and others CONVERGENCE 1. Receive the "Crosshatch Pattern" signal. ADJ. 2. Using the remote controller, call NORMAL mode. ( To be done after the purity Static convergence adjustment.)
  • Page 20 21F-PD250 / 21F-PT220 / 21F-PA18 / 21F-PA18(B) 4. H-VCO, VIF-VCO & S-TRAP fo ADJUSTMENT Adjustment point Adjustment procedure/conditions Waveform and others H-VCO ADJ (MANUAL ADJ) C BUS 1) In No signal (RASTER) condition. CONTROL) 2) Go to service mode, choose service data V03.
  • Page 21 21F-PD250 / 21F-PT220 / 21F-PA18 / 21F-PA18(B) 5. SCREEN, WHITE BALANCE, SUB-BRIGHTNESS & SUB-CONTRAST ADJUSTMENT No. Adjustment point Adjustment procedure/conditions Waveform and others SCREEN 1) In window pattern signal condition. R-CUTOFF (R-C) UP RC key "1" (HEX 80) ADJUSTMENT R-CUTOFF (R-C) DOWN RC key "4"...
  • Page 22 21F-PD250 / 21F-PT220 / 21F-PA18 / 21F-PA18(B) No. Adjustment point Adjustment procedure/conditions Waveform and others 1) In Window Pattern Signal condition. SUB- WINDOW PATTERN SIGNAL BRIGHTNESS Using Minolta Color Analyzer CA-100, let the (to be done gun point at Dark White position (as attach...
  • Page 23 21F-PD250 / 21F-PT220 / 21F-PA18 / 21F-PA18(B) 6. HORIZONTAL, VERTICAL, DEFLECTION LOOP and FOCUS ADJUSTMENT No. Adjustment point Adjustment procedure/conditions Waveform and others 1) Receive Monoscope Pattern Signal (PAL 50Hz). H-SHIFT 2) Choose the service data V13. C BUS 3) Adjust the V13 bus data to have a balance position to CONTROL) spec of A=B (as attach drawing).
  • Page 24 21F-PD250 / 21F-PT220 / 21F-PA18 / 21F-PA18(B) 8. NTSC CHROMA ADJUSTMENT No. Adjustment point Adjustment procedure/conditions Waveform and others SUB-TINT 1) Receive the "NTSC 3.58 Color Bar" signal thru C BUS AV in. CONTROL) 2) Connect the oscilloscope to B-Amp Transistor Base (JUMPER 410).
  • Page 25 21F-PD250 / 21F-PT220 / 21F-PA18 / 21F-PA18(B) 10. A/V INPUT, OUTPUT CHECKING ADJUSTMENT CONDITION / PROCEDURE WAVEFORM OR OTHERS ADJUSTMENT POINT (1) Receive the "PAL Color Bar" signal (100% White Color Bar, Sound VIDEO AND AUDIO 400 Hz 100% Mod).
  • Page 26 21F-PD250 / 21F-PT220 / 21F-PA18 / 21F-PA18(B) Adjustment point Adjustment procedure/conditions Waveform and others NORMAL Key 1) Once in PICTURE Mode, and the NORMAL key is Note: pressed, all the settings will be preset to normal setting In NORMAL Mode, when accordingly.
  • Page 27 21F-PD250 / 21F-PT220 / 21F-PA18 / 21F-PA18(B) 12. SHOCK TEST CHECKING Adjustment point Adjustment procedure/conditions Waveform and others SHOCK TEST 1) Hit at the top of TV set for two time. 2) Check TV set not damage and TV operation op- erate correctly.
  • Page 28 21F-PD250 / 21F-PT220 / 21F-PA18 / 21F-PA18(B) CHAPTER 4. MEMORY MAP [1] MEMORY MAP MODEL : GA-7_IXC129WJN1 SEM PCD SOFTWARE GROUP TV DESIGN ENGINEERING TV PRODUCTION ENGINEERING ISSUED DATE :1 MARCH 2007 ISSUED DATE : ISSUED DATE : 28.JUNE.2007 MANAGER...
  • Page 29 21F-PD250 / 21F-PT220 / 21F-PA18 / 21F-PA18(B) MEMORY MAP (Continued) GA-7_IXC129WJN1 MODEL : SEM PCD SOFTWARE GROUP TV DESIGN ENGINEERING TV PRODUCTION ENGINEERING ISSUED DATE :1 MARCH 2007 ISSUED DATE : ISSUED DATE : 28.JUNE.2007 MANAGER MANAGER MANAGER MATSUNAGA EEPROM CHECK DATA LIST 2...
  • Page 30 21F-PD250 / 21F-PT220 / 21F-PA18 / 21F-PA18(B) MEMORY MAP (Continued) GA-7_IXC129WJN1 MODEL : SEM PCD SOFTWARE GROUP TV DESIGN ENGINEERING TV PRODUCTION ENGINEERING ISSUED DATE :1 MARCH 2007 ISSUED DATE : ISSUED DATE : 28.JUNE.2007 MANAGER MANAGER MANAGER MATSUNAGA EEPROM CHECK DATA LIST 3...
  • Page 31 21F-PD250 / 21F-PT220 / 21F-PA18 / 21F-PA18(B) MEMORY MAP (Continued) GA-7_IXC129WJN1 MODEL : SEM PCD SOFTWARE GROUP TV DESIGN ENGINEERING TV PRODUCTION ENGINEERING ISSUED DATE :1 MARCH 2007 ISSUED DATE : ISSUED DATE : 28.JUNE.2007 MANAGER MANAGER MANAGER MATSUNAGA EEPROM CHECK DATA LIST 4...
  • Page 32 21F-PD250 / 21F-PT220 / 21F-PA18 / 21F-PA18(B) MEMORY MAP (Continued) GA-7_IXC129WJN1 MODEL : SEM PCD SOFTWARE GROUP TV DESIGN ENGINEERING TV PRODUCTION ENGINEERING ISSUED DATE :1 MARCH 2007 ISSUED DATE : ISSUED DATE : 28.JUNE.2007 MANAGER MANAGER MANAGER MATSUNAGA EEPROM CHECK DATA LIST 5...
  • Page 33 21F-PD250 / 21F-PT220 / 21F-PA18 / 21F-PA18(B) MEMORY MAP (Continued) GA-7_IXC129WJN1 MODEL : SEM PCD SOFTWARE GROUP TV DESIGN ENGINEERING TV PRODUCTION ENGINEERING ISSUED DATE :1 MARCH 2007 ISSUED DATE : ISSUED DATE : 28.JUNE.2007 MANAGER MANAGER MANAGER MATSUNAGA EEPROM CHECK DATA LIST 6...
  • Page 34 21F-PD250 / 21F-PT220 / 21F-PA18 / 21F-PA18(B) MEMORY MAP (Continued) GA-7_IXC129WJN1 MODEL : SEM PCD SOFTWARE GROUP TV DESIGN ENGINEERING TV PRODUCTION ENGINEERING ISSUED DATE :1 MARCH 2007 ISSUED DATE : ISSUED DATE : 28.JUNE.2007 MANAGER MANAGER MANAGER MATSUNAGA EEPROM CHECK DATA LIST 7...
  • Page 35 21F-PD250 / 21F-PT220 / 21F-PA18 / 21F-PA18(B) MEMORY MAP (Continued) GA-7_IXC129WJN1 MODEL : SEM PCD SOFTWARE GROUP TV DESIGN ENGINEERING TV PRODUCTION ENGINEERING ISSUED DATE :1 MARCH 2007 ISSUED DATE : ISSUED DATE : 28.JUNE.2007 MANAGER MANAGER MANAGER MATSUNAGA EEPROM CHECK DATA LIST 8...
  • Page 36 21F-PD250 / 21F-PT220 / 21F-PA18 / 21F-PA18(B) MEMORY MAP (Continued) MODEL : GA-7_IXC129WJN1 SEM PCD SOFTWARE GROUP TV DESIGN ENGINEERING TV PRODUCTION ENGINEERING ISSUED DATE :1 MARCH 2007 ISSUED DATE : ISSUED DATE : 28.JUNE.2007 MANAGER MANAGER MANAGER MATSUNAGA EEPROM CHECK DATA LIST 9...
  • Page 37 21F-PD250 / 21F-PT220 / 21F-PA18 / 21F-PA18(B) MEMORY MAP (Continued) MODEL : GA-7_IXC129WJN1 SEM PCD SOFTWARE GROUP TV DESIGN ENGINEERING TV PRODUCTION ENGINEERING ISSUED DATE :1 MARCH 2007 ISSUED DATE : ISSUED DATE : 28.JUNE.2007 MANAGER MANAGER MANAGER MATSUNAGA EEPROM CHECK DATA LIST 10...
  • Page 38 21F-PD250 / 21F-PT220 / 21F-PA18 / 21F-PA18(B) MEMORY MAP (Continued) GA-7_IXC129WJN1 MODEL : SEM PCD SOFTWARE GROUP TV DESIGN ENGINEERING TV PRODUCTION ENGINEERING ISSUED DATE :1 MARCH 2007 ISSUED DATE : ISSUED DATE : 28.JUNE.2007 MANAGER MANAGER MANAGER MATSUNAGA EEPROM CHECK DATA LIST 11...
  • Page 39 21F-PD250 / 21F-PT220 / 21F-PA18 / 21F-PA18(B) MEMORY MAP (Continued) GA-7_IXC129WJN1 MODEL : SEM PCD SOFTWARE GROUP TV DESIGN ENGINEERING TV PRODUCTION ENGINEERING ISSUED DATE :1 MARCH 2007 ISSUED DATE : ISSUED DATE : 28.JUNE.2007 MANAGER MANAGER MANAGER MATSUNAGA EEPROM CHECK DATA LIST 12...
  • Page 40 21F-PD250 / 21F-PT220 / 21F-PA18 / 21F-PA18(B) MEMORY MAP (Continued) GA-7_IXC129WJN1 MODEL : SEM PCD SOFTWARE GROUP TV DESIGN ENGINEERING TV PRODUCTION ENGINEERING ISSUED DATE :1 MARCH 2007 ISSUED DATE : ISSUED DATE : 28.JUNE.2007 MANAGER MANAGER MANAGER MATSUNAGA EEPROM CHECK DATA LIST 13...
  • Page 41 21F-PD250 / 21F-PT220 / 21F-PA18 / 21F-PA18(B) MEMORY MAP (Continued) MODEL : GA-7_IXC129WJN1 SEM PCD SOFTWARE GROUP TV DESIGN ENGINEERING TV PRODUCTION ENGINEERING ISSUED DATE :1 MARCH 2007 ISSUED DATE : ISSUED DATE : 28.JUNE.2007 MANAGER MANAGER MANAGER MATSUNAGA EEPROM CHECK DATA LIST 14...
  • Page 42 21F-PD250 / 21F-PT220 / 21F-PA18 / 21F-PA18(B) MEMORY MAP (Continued) GA-7_IXC129WJN1 MODEL : SEM PCD SOFTWARE GROUP TV DESIGN ENGINEERING TV PRODUCTION ENGINEERING ISSUED DATE :1 MARCH 2007 ISSUED DATE : ISSUED DATE : 28.JUNE.2007 MANAGER MANAGER MANAGER MATSUNAGA EEPROM CHECK DATA LIST 15...
  • Page 43 21F-PD250 / 21F-PT220 / 21F-PA18 / 21F-PA18(B) MEMORY MAP (Continued) GA-7_IXC129WJN1 MODEL : SEM PCD SOFTWARE GROUP TV DESIGN ENGINEERING TV PRODUCTION ENGINEERING ISSUED DATE :1 MARCH 2007 ISSUED DATE : ISSUED DATE : 28.JUNE.2007 MANAGER MANAGER MANAGER MATSUNAGA EEPROM CHECK DATA LIST 16...
  • Page 44 21F-PD250 / 21F-PT220 / 21F-PA18 / 21F-PA18(B) MEMORY MAP (Continued) MODEL : GA-7_IXC129WJN1 SEM PCD SOFTWARE GROUP TV DESIGN ENGINEERING TV PRODUCTION ENGINEERING ISSUED DATE :1 MARCH 2007 ISSUED DATE : ISSUED DATE : 28.JUNE.2007 MANAGER MANAGER MANAGER MATSUNAGA EEPROM CHECK DATA LIST 17...
  • Page 45 21F-PD250 / 21F-PT220 / 21F-PA18 / 21F-PA18(B) MEMORY MAP (Continued) MODEL : GA-7_IXC129WJN1 SEM PCD SOFTWARE GROUP TV DESIGN ENGINEERING TV PRODUCTION ENGINEERING ISSUED DATE :1 MARCH 2007 ISSUED DATE : ISSUED DATE : 28.JUNE.2007 MANAGER MANAGER MANAGER MATSUNAGA EEPROM CHECK DATA LIST 18...
  • Page 46 21F-PD250 / 21F-PT220 / 21F-PA18 / 21F-PA18(B) MEMORY MAP (Continued) GA-7_IXC129WJN1 MODEL : SEM PCD SOFTWARE GROUP TV DESIGN ENGINEERING TV PRODUCTION ENGINEERING ISSUED DATE :1 MARCH 2007 ISSUED DATE : ISSUED DATE : 28.JUNE.2007 MANAGER MANAGER MANAGER MATSUNAGA EEPROM CHECK DATA LIST 19...
  • Page 47 21F-PD250 / 21F-PT220 / 21F-PA18 / 21F-PA18(B) MEMORY MAP (Continued) GA-7_IXC129WJN1 MODEL : SEM PCD SOFTWARE GROUP TV DESIGN ENGINEERING TV PRODUCTION ENGINEERING ISSUED DATE :1 MARCH 2007 ISSUED DATE : ISSUED DATE : 28.JUNE.2007 MANAGER MANAGER MANAGER MATSUNAGA EEPROM CHECK DATA LIST 20...
  • Page 48 21F-PD250 / 21F-PT220 / 21F-PA18 / 21F-PA18(B) MEMORY MAP (Continued) MODEL : GA-7_IXC129WJN1 SEM PCD SOFTWARE GROUP TV DESIGN ENGINEERING TV PRODUCTION ENGINEERING ISSUED DATE :1 MARCH 2007 ISSUED DATE : ISSUED DATE : 28.JUNE.2007 MANAGER MANAGER MANAGER MATSUNAGA EEPROM CHECK DATA LIST 21...
  • Page 49 21F-PD250 / 21F-PT220 / 21F-PA18 / 21F-PA18(B) MEMORY MAP (Continued) GA-7_IXC129WJN1 MODEL : SEM PCD SOFTWARE GROUP TV DESIGN ENGINEERING TV PRODUCTION ENGINEERING ISSUED DATE :1 MARCH 2007 ISSUED DATE : ISSUED DATE : 28.JUNE.2007 MANAGER MANAGER MANAGER MATSUNAGA EEPROM CHECK DATA LIST 22...
  • Page 50 21F-PD250 / 21F-PT220 / 21F-PA18 / 21F-PA18(B) MEMORY MAP (Continued) GA-7_IXC129WJN1 MODEL : SEM PCD SOFTWARE GROUP TV DESIGN ENGINEERING TV PRODUCTION ENGINEERING ISSUED DATE :1 MARCH 2007 ISSUED DATE : ISSUED DATE : 28.JUNE.2007 MANAGER MANAGER MANAGER MATSUNAGA EEPROM CHECK DATA LIST 23...
  • Page 51 21F-PD250 / 21F-PT220 / 21F-PA18 / 21F-PA18(B) MEMORY MAP (Continued) GA-7_IXC129WJN1 MODEL : SEM PCD SOFTWARE GROUP TV DESIGN ENGINEERING TV PRODUCTION ENGINEERING ISSUED DATE :1 MARCH 2007 ISSUED DATE : ISSUED DATE : 28.JUNE.2007 MANAGER MANAGER MANAGER MATSUNAGA EEPROM CHECK DATA LIST 24...
  • Page 52 21F-PD250 / 21F-PT220 / 21F-PA18 / 21F-PA18(B) MEMORY MAP (Continued) GA-7_IXC129WJN1 MODEL : SEM PCD SOFTWARE GROUP TV DESIGN ENGINEERING TV PRODUCTION ENGINEERING ISSUED DATE :1 MARCH 2007 ISSUED DATE : ISSUED DATE : 28.JUNE.2007 MANAGER MANAGER MANAGER MATSUNAGA EEPROM CHECK DATA LIST 25...
  • Page 53 21F-PD250 / 21F-PT220 / 21F-PA18 / 21F-PA18(B) MEMORY MAP (Continued) GA-7_IXC129WJN1 MODEL : SEM PCD SOFTWARE GROUP TV DESIGN ENGINEERING TV PRODUCTION ENGINEERING ISSUED DATE :1 MARCH 2007 ISSUED DATE : ISSUED DATE : 28.JUNE.2007 MANAGER MANAGER MANAGER MATSUNAGA EEPROM CHECK DATA LIST 26...
  • Page 54 21F-PD250 / 21F-PT220 / 21F-PA18 / 21F-PA18(B) MEMORY MAP (Continued) GA-7_IXC129WJN1 MODEL : SEM PCD SOFTWARE GROUP TV DESIGN ENGINEERING TV PRODUCTION ENGINEERING ISSUED DATE :1 MARCH 2007 ISSUED DATE : ISSUED DATE : 28.JUNE.2007 MANAGER MANAGER MANAGER MATSUNAGA EEPROM CHECK DATA LIST 27...
  • Page 55 21F-PD250 / 21F-PT220 / 21F-PA18 / 21F-PA18(B) MEMORY MAP (Continued) MODEL : GA-7_IXC129WJN1 SEM PCD SOFTWARE GROUP TV DESIGN ENGINEERING TV PRODUCTION ENGINEERING ISSUED DATE :1 MARCH 2007 ISSUED DATE : ISSUED DATE : 28.JUNE.2007 MANAGER MANAGER MANAGER MATSUNAGA EEPROM CHECK DATA LIST 28...
  • Page 56 21F-PD250 / 21F-PT220 / 21F-PA18 / 21F-PA18(B) MEMORY MAP (Continued) GA-7_IXC129WJN1 MODEL : SEM PCD SOFTWARE GROUP TV DESIGN ENGINEERING TV PRODUCTION ENGINEERING ISSUED DATE :1 MARCH 2007 ISSUED DATE : ISSUED DATE : 28.JUNE.2007 MANAGER MANAGER MANAGER MATSUNAGA EEPROM CHECK DATA LIST 29...
  • Page 57 21F-PD250 / 21F-PT220 / 21F-PA18 / 21F-PA18(B) MEMORY MAP (Continued) GA-7_IXC129WJN1 MODEL : SEM PCD SOFTWARE GROUP TV DESIGN ENGINEERING TV PRODUCTION ENGINEERING ISSUED DATE :1 MARCH 2007 ISSUED DATE : ISSUED DATE : 28.JUNE.2007 MANAGER MANAGER MANAGER MATSUNAGA EEPROM CHECK DATA LIST 30...
  • Page 58 21F-PD250 / 21F-PT220 / 21F-PA18 / 21F-PA18(B) MEMORY MAP (Continued) GA-7_IXC129WJN1 MODEL : SEM PCD SOFTWARE GROUP TV DESIGN ENGINEERING TV PRODUCTION ENGINEERING ISSUED DATE :1 MARCH 2007 ISSUED DATE : ISSUED DATE : 28.JUNE.2007 MANAGER MANAGER MANAGER MATSUNAGA EEPROM CHECK DATA LIST 31...
  • Page 59 21F-PD250 / 21F-PT220 / 21F-PA18 / 21F-PA18(B) MEMORY MAP (Continued) GA-7_IXC129WJN1 MODEL : SEM PCD SOFTWARE GROUP TV DESIGN ENGINEERING TV PRODUCTION ENGINEERING ISSUED DATE :1 MARCH 2007 ISSUED DATE : ISSUED DATE : 28.JUNE.2007 MANAGER MANAGER MANAGER MATSUNAGA EEPROM CHECK DATA LIST 32...
  • Page 60 21F-PD250 / 21F-PT220 / 21F-PA18 / 21F-PA18(B) 21Q-FG1F Service Manual 21Q-FG1F Market CHAPTER 5. TROUBLE SHOOTING FLOWCHART [1] TROUBLE SHOOTING FLOWCHART NO RASTER Check F701. Blown out. Replace the fuse. Check T702 pin (17) voltage The fuse is blown out again.
  • Page 61 21F-PD250 / 21F-PT220 / 21F-PA18 / 21F-PA18(B) TROUBLE SHOOTING FLOWCHART (Continued) CIRCUITS TO BE CHECKED: NO SOUND Sound Detector Circuit. Sound Switch and Att. Control. Audio Output Circuit. Does signal appear at pins Check signal appear from pin (50) (8) of IC301 ? of IC801 to pin (4) of IC301.
  • Page 62 21F-PD250 / 21F-PT220 / 21F-PA18 / 21F-PA18(B) TROUBLE SHOOTING FLOWCHART (Continued) DEFECTIVE VERTICAL AMP. AND VERTICAL LINEARITY Re-adjust vertical size. (Bus Data) Vertical linearity and size are abnormal. Check R503, R506, R513, R520 and C515. NO SPECIFIC COLOUR Is some colour produced in...

  • Page 63: Side View

    21F-PD250 / 21F-PT220 / 21F-PA18 / 21F-PA18(B) 21Q-FG1F 21Q-FG1F Market CHAPTER 6. SOLID STATE DEVICE BASE DIAGRAM [1] SOLID STATE DEVICE BASE DIAGRAM TOP VIEW COLLECTOR COLLECTOR IXC129WJ BASE EMITTER BASE EMITTER M24C08 C3928 A1530 CATHODE IXC129WJ ANODE EX1393C SIDE VIEW...
  • Page 64 21F-PD250 / 21F-PT220 / 21F-PA18 / 21F-PA18(B) CHAPTER 7. CHASSIS LAYOUT [1] CHASSIS LAYOUT 7 – 1...
  • Page 65 21F-PD250 / 21F-PT220 / 21F-PA18 / 21F-PA18(B) 7 – 2...
  • Page 66 21F-PD250 / 21F-PT220 / 21F-PA18 / 21F-PA18(B) CHAPTER 8. BLOCK DIAGRAM [1] BLOCK DIAGRAM: MAIN UNIT 8 – 1...
  • Page 67 21F-PD250 / 21F-PT220 / 21F-PA18 / 21F-PA18(B) 8 – 2...
  • Page 68 21F-PD250 / 21F-PT220 / 21F-PA18 / 21F-PA18(B) 8 – 3...
  • Page 69 21F-PD250 / 21F-PT220 / 21F-PA18 / 21F-PA18(B) 8 – 4...

  • Page 70: Block Diagram : Crt Unit

    21F-PD250 / 21F-PT220 / 21F-PA18 / 21F-PA18(B) [2] BLOCK DIAGRAM: CRT UNIT 8 – 5...

  • Page 71: Description Of Schematic Diagram

    21F-PD250 / 21F-PT220 / 21F-PA18 / 21F-PA18(B) 21Q-FG1F Service Manual 21Q-FG1F Market CHAPTER 9. DESCRIPTION OF SCHEMATIC DIAGRAM [1] DESCRIPTION OF SCHEMATIC DIAGRAM SAFETY NOTES: NOTES: DISCONNECT THE AC PLUG FROM THE AC OUT- The unit of resistance "ohm" is omitted.
  • Page 72 21F-PD250 / 21F-PT220 / 21F-PA18 / 21F-PA18(B) CHAPTER 10. WAVEFORMS [1] WAVEFORMS 10 – 1...

  • Page 73: Schematic Diagram : Crt Unit

    21F-PD250 / 21F-PT220 / 21F-PA18 / 21F-PA18(B) CHAPTER 11. SCHEMATIC DIAGRAM [1] SCHEMATIC DIAGRAM: CRT UNIT 11 – 1...

  • Page 74: Schematic Diagram : Main Unit

    21F-PD250 / 21F-PT220 / 21F-PA18 / 21F-PA18(B) [2] SCHEMATIC DIAGRAM: MAIN UNIT 11 – 2...
  • Page 75 21F-PD250 / 21F-PT220 / 21F-PA18 / 21F-PA18(B) 11 – 3...
  • Page 76 21F-PD250 / 21F-PT220 / 21F-PA18 / 21F-PA18(B) 11 – 4...
  • Page 77 21F-PD250 / 21F-PT220 / 21F-PA18 / 21F-PA18(B) 11 – 5...
  • Page 78 21F-PD250 / 21F-PT220 / 21F-PA18 / 21F-PA18(B) 21Q-FG1F Service Manual 21Q-FG1F Market CHAPTER 12. PRINTED WIRING BOARD ASSEMBLIES [1] PWB-A: MAIN COMPONENT SIDE 12 – 1...
  • Page 79 21F-PD250 / 21F-PT220 / 21F-PA18 / 21F-PA18(B) [2] PWB-A: MAIN CHIP SIDE 12 – 2...
  • Page 80 21F-PD250 / 21F-PT220 / 21F-PA18 / 21F-PA18(B) [3] PWB-B: CRT COMPONENT SIDE [4] PWB-B: CRT CHIP SIDE 12 – 3...

  • Page 81: Parts Guide

    21F-PD250 / 21F-PT220 / 21F-PA18 / 21F-PA18(B) PARTS GUIDE 21F-PT220 21F-PD250 21F-PA18 MODEL 21F-PA18(B) CONTENTS PICTURE TUBE MISCELLANEOUS PARTS PRINTED WIRING BOARD SUPPLIED ACCESSORIES ASSEMBLIES CABINET PARTS MAIN UNIT PACKING PARTS CRT UNIT Parts marked with " " are important for maintaining the safety of the set. Be sure to replace these parts with specified ones for maintaining the safety and performance of the set.
  • Page 82 21F-PD250 / 21F-PT220 / 21F-PA18 / 21F-PA18(B) PARTS CODE DESCRIPTION [1] PICTURE TUBE VB51LYZ395X1E Picture Tube (ITC Type) RCILGA112WJZZ Degaussing Coil QEARCA012WJZZ Corting Ground Wire [2] PRINTED WIRING BOARD ASSEMBLIES DUNTKE134WEB8 Main Unit (21F-PT220) DUNTKE134WEC0 Main Unit (21F-PA18, 21F-PA18(B)) DUNTKE134WEC2...
  • Page 83 21F-PD250 / 21F-PT220 / 21F-PA18 / 21F-PA18(B) PARTS CODE DESCRIPTION [3] MAIN UNIT VA701 RH-VXA182WJZZ Varistor PR701 RMPTPA016WJZZ PTC Thermistor (Positive resistor) X801 RCRSAA019WJZZ Crystal L203 VP-DF270K0000* Peaking Coil, 27mH L205 VP-XF2R2K0000* Peaking Coil, 2.2mH L602 RCILP0223CEZZ+ Coil L701 RCILFA187WJZZ...
  • Page 84 Capacitor, 47µF 16V Electrolytic C819 VCKYCY1HB103K* Capacitor, 0.01µF 50V Ceramic C820 VCKYCY1HF103Z* Capacitor, 0.01µF 16V Ceramic C821 VCKYCY1HF103Z* Capacitor, 0.01µF 16V Ceramic (for 21F-PD250 / 21F-PA18 / 21F-PA18(B) only) C822 VCKYCY1HB104K* Capacitor, 0.1µF 50V Ceramic C823 VCKYCY1HB104K* Capacitor, 0.1µF 50V Ceramic C824 VCKYCY1CF105Z* Capacitor, 1µF 16V Ceramic (for 21F-PT220 only)
  • Page 85 21F-PD250 / 21F-PT220 / 21F-PA18 / 21F-PA18(B) PARTS CODE DESCRIPTION [3] MAIN UNIT R391 VRN-VV3ABR22J Resistor, 0.22 1W Metal Film R432 VRS-CY1JF750J* Resistor, 75 1/16W Metal Oxide (for 21F-PT220 only) R458 VRS-CY1JF103J* Resistor, 10k 1/16W Metal Oxide R459 VRD-RA2EE750J* Resistor, 75 1/4 Carbon...
  • Page 86 J403 QJAKE0211CE09 Jack (for 21F-PT220 only) J405 QJAKH0044AJZZ Jack (Rear AV) P301 QPLGN0241CEZZ Plug, 2 Pin (S) (for 21F-PA18 / 21F-PA18(B) only) P302 QPLGN0461CEZZ Plug, 4 Pin (S) (for 21F-PT220 / 21F-PD250 only) P601 QPLGN0660CEZZ Plug, 6 Pin (F) P602...
  • Page 87 21F-PD250 / 21F-PT220 / 21F-PA18 / 21F-PA18(B) PARTS CODE DESCRIPTION [4] CRT UNIT Q853 VSBF422++++-2+ Transistor, BF422 Q854 VSBF422++++-2+ Transistor, BF422 Q855 VSBF422++++-2+ Transistor, BF422 Q894 VS2SA1530AR-1* Transistor, 2SA1530AR D859 VHD1N4148//-1* Diode, 1N4148 D895 VHD1N4148//-1* Diode, 1N4148 D896 VHEZJ5R6C++1E* Zener Diode, 5.6V...
  • Page 88 21F-PD250 / 21F-PT220 / 21F-PA18 / 21F-PA18(B) [7] CABINET PARTS 21F-PA18 1 1-1 21F-PA18(B) 1 1-1 1 1-1 21F-PD250 21F-PT220 PARTS CODE DESCRIPTION CABINET PARTS (21F-PT220) CCABAB883WEA0 Front Cabinet Assembly Not Available Front Cabinet JBTN-A673WJSA Power Button MSPRCA067WJFW Spring GCOVAC321WJSA R/C &...
  • Page 89 SPAKCD498WJZZ Packing Case (for 21HXF250I / 21HXF1000I only) SPAKXB061WJZZ Packing Foam (Top) (for 21F-PD250 only) SPAKXA765WJZZ Packing Foam (Top) (for 21F-PA18 / 21F-PA18(B) only) SPAKXB522WJZZ Packing Foam (Top) (for 21HXF250I / 21HXF1000I only) SPAKXB062WJZZ Packing Foam (Bottom) (for 21F-PD250 only)

This manual is also suitable for:

21f-pa18(b)21f-pd25021f-pt220

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