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21HF2-SS

5 – 1

21HF2-SS

Service Manual

CHAPTER 5.

TROUBLE SHOOTING FLOWCHART

[1] TROUBLE SHOOTING FLOWCHART

NO RASTER

Blown out.

Replace the fuse.

Check IC701, D701 and
C705.

The fuse is blown out again.

Does horizontal circuit
oscillate ?

Check T701 pin (17) voltage
(Approx. 310V at 220V AC)

Check F701.

Check Secondary Main+B
(Approx. 130V)

Check CRT connector K-
wire and the signal on it.

Check Q601 and Q602.

Check 185V
Bias on
CRT board.

Check
IC801.

Checking the
protector circuit.

Check Q752 for 8V regulator
circuit and Q751, Q754 for
5V regulator circuit.

Check D751, IC702, D750
and IC703.

Check R701.

Summary of Contents for 21HF2-SS

Page 1: ... 12 5 Parts Guide SERVICE MANUAL CONTENTS 21HF2 SS No S15D621HF2 SS COLOUR TELEVISION Chassis No GA 2 21HF2 SS MODEL SHARP CORPORATION The chassis in this receiver is partially hot Use an isolation transformer between the line cord plug and power recep tacle when servicing this chassis To prevent electric shock do not remove cover No user serviceable parts inside Refer servicing to qualified servi...

Page 2: ...Audio Power Output Rating 2 5W rms X2 Speaker Size 12 x 6 cm Elliptic 2pcs Voice Coil Impedance 16 ohms at 400 Hz Aerial Input Impedance VHF UHF 75 ohms Unbalanced Receiving System PAL I B G D K SECAM B G D K K1 Receiving Channel VHF Channels E2 48 25MHz thru E12 224 25MHz C1 49 75 MHz thru C12 216 25 MHz S1 105 25 MHz thru S41 463 25 MHz UHF Channels E21 471 25MHz thru E69 855 25MHz C13 471 25 MH...

Page 3: ...ous radiation with prolonged exposure at close range the following precautions should be observed 1 When repairing the circuit be sure not to increase the high voltage to more than 30 0kV at beam 0 μA for the set 2 To keep the set in a normal operation be sure to make it function on 27 0kV 1 0kV at beam 1 000 μA in the case of the set The set has been factory Adjusted to the above mentioned high v...

Page 4: ... the VOLUME UP DOWN key on the remote controller the data can be modified Please wait approximately 200 msec for data storage in EEPROM before select to another mode v In Check mode the data cannot be changed vi Disable the short of JA 304 JA 307 it will switch to the NORMAL mode position and the microprocessor is out of the SERVICE mode 2 Factory Presetting i Short JA 304 JA 307 then turn ON the ...

Page 5: ...CE 15 SUB BRIGHTNESS 16 SUB CONTRAST 17 SUB TINT 18 SUB COLOUR 19 SECAM OFFSET 20 BEAM CURRENT CHECK 21 BEAM PROTECTOR CHECK 22 HV PROTECTOR CHECK 23 OTHER PROTECTOR CHECK 24 AV OUT CHECK 25 AV IN CHECK 26 CONTRAST CONTROL CHECK 27 COLOUR CONTROL CHECK 28 BRIGHTNESS CONTROL CHECK 29 TINT CONTROL CHECK 30 SHARPNESS CONTROL CHECK 31 CH DISPLAY COLOUR CHECK 32 NORMAL DISPLAY CHECK 33 WHITE TEMP CONTR...

Page 6: ...C DOWN IN SERVICE MODE V00 60 POS 6 B C DOWN IN SERVICE MODE V00 E0 POS 7 R D UP IN SERVICE MODE V00 10 POS 8 B D UP IN SERVICE MODE V00 50 POS 9 B D DOWN IN SERVICE MODE V00 E4 FLASHBACK R D DOWN IN SERVICE MODE V00 E4 FLASHBACK Y MUTE BESIDES OF SERVICE MODE V00 75 WHITE TEMP UP RF AGC V01 F5 WHITE TEMP DOWN VIF VC0 V02 C2 TUNE DOWN H VCO V03 8D SHARPNESS DOWN SUB CON V04 D6 BALANCE LEFT SUB COL...

Page 7: ...J AUTO REMARK R DRIVE V00 0 127 63 ADJ PLS REFER TO B DRIVE V00 0 127 63 ADJ ADJ ITEM FOR R CUT V00 0 255 127 ADJ SCREEN AND G CUT V00 0 255 127 ADJ WHITE BALANCE B CUT V00 0 255 127 ADJ RF AGC V01 0 127 50 AUTO VIF VCO V02 0 63 31 AUTO H VCO V03 0 7 3 AUTO SUB CONTRAST V04 0 127 100 ADJ SUB COLOUR V05 0 127 63 ADJ SUB BRIGHT V06 0 255 127 ADJ SUB TINT V07 0 127 63 ADJ SUB SHARPNESS V08 0 63 43 FI...

Page 8: ...DL AV Y SIGNAL DELAY AV F23 0 7 6 FIX YDL AV P Y SIGNAL DELAY PAL AV F24 0 7 6 FIX YDL AV S Y SIGNAL DELAY SECAM AV F25 0 7 7 FIX YDL AV N4 Y SIGNAL DELAY N443 AV F26 0 7 6 FIX YDL AV N3 Y SIGNAL DELAY N358 AV F27 0 7 6 FIX YDL YUV Y SIGNAL DELAY YUV F28 0 7 6 FIX COL AV OFFSET COLOUR OFFSET AV F29 31 0 31 10 FIX BUS SET UP COL P OFFSET COLOUR OFFSET PAL F30 30 0 31 0 FIX COL S OFFSET COLOUR OFFSE...

Page 9: ...UN MODE 1 FREERUN AFC2 NO SYNC HORIZONTAL AFC2 GAIN F61 0 NORMAL 1 DOWN 0 FIX GAMMA GAMMA CORRECTION QTY F62 0 3 0 FIX BS D C BLACK STRETCH CONTROL F63 0 15 10 FIX LEVEL BS GAIN BLACK STRETCH LEVEL F64 0 NORMAL 1 DOWN 0 FIX OM DET OVER MODULATION DETECT F65 0 OFF 1 ON 0 FIX SL TV SLICE LEVEL OF SYNC F66 0 7 2 FIX DETECTION TV SL AV SLICE LEVEL OF SYNC F67 0 7 4 FIX DETECTION AV SL YUV SLICE LEVEL ...

Page 10: ...IN ADJUST F89 0 31 16 FIX NICAM FM LEVEL ADJ FM LEVEL ADJUST F90 15 0 15 0 FIX NICAM IGR LEVEL ADJ IGR LEVEL ADJUST F91 15 0 15 1 FIX NICAM NICAM BG LVL NICAM B G LEVEL ADJUST F92 15 0 15 2 FIX ADJ NICAM NICAM I LVL ADJ NICAM I LEVEL ADJUST F93 15 0 15 3 FIX NICAM DETECTION YUV NICAM DK LVL NICAM D K LEVEL ADJUST F94 15 0 15 1 FIX ADJ NICAM NICAM LOW ERR NICAM LOWER ERROR LIMIT F95 0 255 35 FIX LI...

Page 11: ...X BUS SET UP S CTRL 1 ENABLE V Demute Delay VIDEO DEMUTE DELAY F115 0 255 0 FIX S Demute Delay SOUND DEMUTE DELAY F116 0 255 0 FIX MER S BOOSTER FREQ F117 0 255 70 FIX CHARACTERISTIC CONTROL MEL1 S BOOSTER LEVEL1 F118 0 255 150 FIX MEL2 S BOOSTER LEVEL2 F119 0 255 156 FIX MEL3 S BOOSTER LEVEL3 F120 0 255 163 FIX MEL4 S BOOSTER LEVEL4 F121 0 255 165 FIX MEL5 S BOOSTER LEVEL5 F122 0 255 170 FIX MEL6...

Page 12: ...0 DISABLE 1 ENABLE 0 OPTION SET UP LANGUAGE O18 1 255 63 OPTION SET UP SEARCH SPEED O19 1 350 2 450 3 550 4 650 5 750 3 OPTION SET UP R C MENU O20 0 ENABLE 1 DISABLE 0 OPTION SET UP LED CONT O21 0 ONE LED 1 TWO LED 0 OPTION SET UP S BOOSTER O22 0 DISABLE 1 ENABLE 0 OPTION SET UP SHARP LOGO O23 0 DISABLE 1 ENABLE 0 OPTION SET UP HOTEL MODE OPERATION OF HOTEL MODE WHEN CHANGE SERVICE DATA O01 TO 1 H...

Page 13: ...22 S BOOSTER 0 DISABLE 1 ENABLE 0 O23 SHARP LOGO 0 DISABLE 1 ENABLE 0 Soft Ver V2 11 ROMCORRECT1 ROMCORRECT2 EEPROM Data Slave Sub A2 76 C1 ROMCORRECT1 Permission A2 77 90 ROMCORRECT1 Address H A2 78 6B ROMCORRECT1 Address L A2 79 16 ROMCORRECT1 Code length A2 7A E7 ROMCORRECT1 Checksum A2 7B FF ROMCORRECT2 Permission A2 7C FF ROMCORRECT2 Address H A2 7D FF ROMCORRECT2 Address L A2 7E FF ROMCORREC...

Page 14: ... B G 38 294 25 B G 3 77 25 D K 39 463 25 B G 4 175 25 B G 40 5 182 25 B G 41 647 25 B G 6 183 25 D K 42 633 25 B G 7 191 25 D K 43 679 25 B G 8 196 25 B G 44 174 25 B G 9 199 25 M 45 175 55 B G 10 210 25 B G 46 11 224 25 B G 47 12 471 25 B G 48 13 487 25 I 49 14 503 25 B G 50 15 575 25 B G 51 16 583 25 B G 52 17 599 25 B G 53 18 621 25 M 54 19 639 25 D K 55 20 703 25 B G 56 21 735 25 I 57 22 767 2...

Page 15: ...ST POWER ON LAST TV AV MODE TV MODE LAST POSITION CH 1 FLASHBACK CHANNEL CH 1 1 2 DIGIT ENTRY 2 DIGIT ENTRY VOLUME 0 Min BLUE BACK OFF OFF TIMER ON TIMER ON TIMER POSITION ON TIMER VOLUME REMINDER AFT ALL CH ON COLOUR SYSTEM ALL CH AUTO SKIP ALL CH OFF CONTRAST 60 COLOUR 0 BRIGHTNESS 0 TINT 0 SHARPNESS 0 WHITE TEMP 0 INITIAL LANGUAGE SOUND SYSTEM 4 HEX 97 ARABIC B G MODEL MAGNETIC FIELD V H nT BAC...

Page 16: ...T ADJUSTMENT I2C BUS CON TROL AUTO MANUAL ADJ 1 Receive PAL COLOUR BAR signal Signal Strength 56 1 dBV 75 ohm open 2 Connect the oscilloscope to TP201 Tuner s AGC Terminal as shown in Fig 3 1 3 Call V01 mode in service mode Adjust the V01 bus data to obtain the Tuner output pin drop 0 1 1 0V below maximum voltage 4 Change the antenna input signal to 63 67dBV and make sure there is no noise 5 Turn ...

Page 17: ...stward 6 Tighten up the deflection coil screws Tightening torque 108 20 N 11 2 kgf 7 Make sure the CRT corners landing meet the A rank require ments If not stick the magnet sheet to correct it NOTE Note This adjustment must be done after warming up the unit for 30 minutes or longer with a beam current over 700 μA NOTE Note Set the service mode by JA304 JA307 short then press factory process R C RG...

Page 18: ...ing steps a Fig a Drive the wedge at point a and swing the deflection coil upward b Fig b Drive the wedge at point b and c and swing the deflection coil downward c Fig c Drive the c wedge deeper and swing the deflection coil rightward d Fig d Drive the b wedge deeper and swing the deflection coil leftward 2 Fix all the wedges on the CRT and apply glass tape over them 3 Apply lacquer to the deflect...

Page 19: ... mode choose service data V02 3 Connect oscilloscope to IC801 pin2 adj V02 until voltage become 2 5 1 V Auto Adj 1 In No signal RASTER condition 2 Go to service mode choose service data V02 3 Press the R C Auto Hex C1 key OSD will appear OK at screen 4 If appear NG pls repeat step 3 NOTE Note This adjustment must be done after aging at least 3 minutes 3 S TRAP fo ADJ I2C BUS CON TROL AUTO MANUAL A...

Page 20: ...key 4 HEX 20 G CUTOFF G C UP RC key 2 HEX 40 G CUTOFF G C DOWN RC key 5 HEX A0 B CUTOFF B C UP RC key 3 HEX C0 B CUTOFF B C DOWN RC key 6 HEX 60 R DRIVE R D UP RC key 7 HEX E0 R DRIVE R D DOWN RC key Flashback HEX E4 B DRIVE B D UP RC key 8 HEX 10 B DRIVE B D DOWN RC key 0 HEX 50 2 WHITE BALANCE ADJ to be done after screen adj I2C BUS CON TROL 1 WHITE HIGH BEAM In Window Pattern Signal First use M...

Page 21: ...4 SUB CONTRAST to be done after screen white bal ance adj sub brightness adj I2C BUS CON TROL 1 In Window Pattern Signal condition 2 Using Minolta Color Analyzer CA 100 let the gun point at White position as attach drawing adjust V04 Bus data until LUMINANCE Y 200 10 cd m2 5 Beam Current Check 1 Receive the Monoscope Pattern signal 2 Press R C to set Picture NORMAL condition 3 Connect the DC milia...

Page 22: ...er purity V shift adj 1 Receive Monoscope Pattern Signal PAL 50 Hz 2 Choose the service data V11 3 Adjust V11 bus data until the overscan become 10 2 5 Caution1 Pls aging TV more than 10 minutes before adjustment Caution2 For H shift V shift V size adj after adj please switch to Monoscope pattern signal NTSC 60 Hz to confirm all positions are same 4 SUB SHARPNESS 1 Confirm Service data V08 is 43 5...

Page 23: ...nt Adjustment condition procedure Waveform or others 1 SECAM BLACK LEVEL R Y B Y I2C BUS CON TROL 1 Receive SECAM COLOUR BAR signal 2 In the service mode select service data V14 3 Connect oscilloscope to TP 801 Range 20mV Div AC Use Probe 10 1 probe Sweep time 20μ sec Div 4 Adjust the V14 so that the offset of R Y to minimum shown in Fig 2 1 b it means adjust the offset of between No signal line a...

Page 24: ...Box to 24 5V and make sure the protector is working 3 OTHER PROTECTOR 1 Once finish rectified Electrolytic Capacitor short testing in B line check all possible damaged components on B line Use random selected set for inspection No Adjustment point Adjustment condition procedure Waveform or others 1 VIDEO AND AUDIO OUTPUT CHECK 1 Receive the PAL Colour Bar signal 100 White Colour Bar Sound 400 Hz 1...

Page 25: ... Up Down key to check TINT UP for GREEN direction and DOWN for PURPLE direction whether is OK or not 5 SHARPNESS key 1 Receive Monoscope Pattern signal 2 Set MENU then go into PICTURE mode to select SHARP NESS 3 Press Volume Up Down key to check whether the SHARP NESS effect is OK or not 6 CH DISPLAY COLOUR 1 All Ch 1 99 will have an OSD display of the channel number in green colour under AFT ON c...

Page 26: ...e Check again its colour so that it is working properly 10 SOUND SYSTEM 1 Receive PAL D K signal press MENU choose CH SETTING then go into SOUND mode to select B G I M Check the sound output is not working properly Select D K and check the sound output to make sure it is working properly 2 Receive PAL I signal press MENU choose CH SETTING then go into SOUND mode to select B G D K M Check the sound...

Page 27: ...SHOCK TEST 1 Hit at the top of TV set for two time 2 Check TV set not damage and TV operation operate correctly No Adjustment point Adjustment condition procedure Waveform or others 1 ROM CORRECTION CHECK 1 Go to the service mode then go to Check mode by pressing MENU button untill the attach service items appears 2 Check the ROM correction status by monitoring the screen follow the model s settin...

Page 28: ... LOW BYTE POS 22 TUNING FR E QUE NCY HIGH BYTE TUNING FR E QUE NCY LOW BYTE POS 19 TUNING FR E QUE NCY HIGH BYTE TUNING FR E QUE NCY LOW BYTE POS 20 TUNING FR E QUE NCY HIGH BYTE TUNING FR E QUE NCY LOW BYTE POS 17 TUNING FR E QUE NCY HIGH BYTE TUNING FR E QUE NCY LOW BYTE POS 18 TUNING FR E QUE NCY HIGH BYTE TUNING FR E QUE NCY LOW BYTE POS 15 TUNING FR E QUE NCY HIGH BYTE TUNING FR E QUE NCY LOW...

Page 29: ...TUNING FR E QUE NCY HIGH BYTE TUNING FR E QUE NCY LOW BYTE POS 54 TUNING FR E QUE NCY HIGH BYTE TUNING FR E QUE NCY LOW BYTE POS 55 TUNING FR E QUE NCY HIGH BYTE TUNING FR E QUE NCY LOW BYTE POS 52 TUNING FR E QUE NCY HIGH BYTE TUNING FR E QUE NCY LOW BYTE POS 53 TUNING FR E QUE NCY HIGH BYTE POS 50 TUNING FR E QUE NCY HIGH BYTE TUNING FR E QUE NCY LOW BYTE POS 51 TUNING FR E QUE NCY HIGH BYTE TUN...

Page 30: ...TUNING FR E QUE NCY HIGH BYTE POS 82 TUNING FR E QUE NCY HIGH BYTE TUNING FR E QUE NCY LOW BYTE POS 83 TUNING FR E QUE NCY HIGH BYTE TUNING FR E QUE NCY LOW BYTE POS 80 TUNING FR E QUE NCY HIGH BYTE TUNING FR E QUE NCY LOW BYTE POS 81 TUNING FR E QUE NCY HIGH BYTE TUNING FR E QUE NCY LOW BYTE POS 78 TUNING FR E QUE NCY HIGH BYTE TUNING FR E QUE NCY LOW BYTE POS 79 TUNING FR E QUE NCY HIGH BYTE TUN...

Page 31: ... 3C F0 POS 7 POS 6 POS 5 POS 4 POS 3 POS 2 POS 1 POS 0 01 00 FF F1 POS 15 POS 14 POS 13 POS 12 POS 11 POS 10 POS 9 POS 8 00 00 FF F2 POS 23 POS 22 POS 21 POS 20 POS 19 POS 18 POS 17 POS 16 00 00 FF F3 POS 31 POS 30 POS 29 POS 28 POS 27 POS 26 POS 25 POS 24 00 00 FF F4 POS 39 POS 38 POS 37 POS 36 POS 35 POS 34 POS 33 POS 32 00 00 FF F5 POS 47 POS 46 POS 45 POS 44 POS 43 POS 42 POS 41 POS 40 00 00 F...

Page 32: ...S TE M POS 53 C S YS TE M POS 53 S S YS TE M POS 54 C S YS TE M POS 54 S S YS TE M POS 51 C S YS TE M POS 51 S S YS TE M POS 52 C S YS TE M POS 52 S S YS TE M POS 49 C S YS TE M POS 49 S S YS TE M POS 50 C S YS TE M POS 50 S S YS TE M POS 47 C S YS TE M POS 47 S S YS TE M POS 48 C S YS TE M POS 48 S S YS TE M POS 45 C S YS TE M POS 45 S S YS TE M POS 46 C S YS TE M POS 46 S S YS TE M POS 43 C S YS...

Page 33: ...ION R OM COR R E CTION 1 ID R OM COR R E CTION 1 HIGH BYTE ADDR E S S R OM COR R E CTION 1 LOW BYTE ADDR E S S TV AV LAS T CHANNE L POS ITION C S YS TE M AV1 C S YS TE M AV2 S S YS TE M POS 98 C S YS TE M POS 98 S S YS TE M POS 99 C S YS TE M POS 99 S S YS TE M POS 96 C S YS TE M POS 96 S S YS TE M POS 97 C S YS TE M POS 97 S S YS TE M POS 94 C S YS TE M POS 94 S S YS TE M POS 95 C S YS TE M POS 9...

Page 34: ... R E CTION 2 CODE R OM COR R E CTION 2 CODE R OM COR R E CTION 2 CODE R OM COR R E CTION 2 CODE R OM COR R E CTION 2 CODE R OM COR R E CTION 2 CODE R OM COR R E CTION 2 CODE R OM COR R E CTION 2 CODE R OM COR R E CTION 2 CODE R OM COR R E CTION 2 CODE R OM COR R E CTION 2 CODE R OM COR R E CTION 2 CODE R OM COR R E CTION 2 CODE R OM COR R E CTION 2 CODE R OM COR R E CTION 2 CODE R OM COR R E CTION...

Page 35: ...C6 00 00 FF 1C7 00 00 FF 1C8 00 00 FF 1C9 00 00 FF 1CA 00 00 FF 1CB 00 00 FF 1CC 00 00 FF 1CD 00 00 FF 1CE 1CF 1D0 1D1 1D2 1D3 1D4 1D5 1D6 1D7 1D8 1D9 1DA 1DB 1DC 1DD 1DE 1DF 1E 0 1E 1 1E 2 1E 3 1E 4 1E 5 1E 6 1E 7 1E 8 1E 9 1E A 1E B 1E C 1E D 1E E 1E F 1F0 1F1 1F2 1F3 1F4 1F5 1F6 1F7 1F8 1F9 1FA 1FB 1FC 1FD 1FE 1FF MODE L MODE L LE TTE R NO LE TTE R NO S LV5 HIGH S LV5 LOW S LV3 HIGH S LV3 LOW S...

Page 36: ...2D 22E 22F 230 5F 00 7F 231 04 00 07 232 05 00 07 233 05 00 07 234 07 00 07 235 05 00 07 236 05 00 07 237 06 00 07 238 06 00 07 239 07 00 07 23A 06 00 07 23B 06 00 07 23C 06 00 07 23D 29 00 3E 23E 1F 00 3E 23F 28 00 3E MODE L MODE L LE TTE R NO LE TTE R NO VIF G F12 S TR AP BG V20 S TR AP I V21 S TR AP DK V22 S TR AP M V23 S UB VOLUME V16 V S IZE 60Hz V17 YDL AV N443 F26 YDL AV N358 F27 V S HIFT 6...

Page 37: ...2 00 03 279 02 00 03 27A 00 00 FF 1 New Item F115 27B 00 00 FF 1 New Item F116 27C 27D 27E 27F MODE L MODE L LE TTE R NO LE TTE R NO VIDE O DE MUTE DE LAY F115 S OUND DE MUTE DE LAY F116 FOR CE D S CM KIL TV F112 FOR CE D S CM KIL AV YUV F113 AC FAIL WO BR IGHT F111 S TANDBY WO BR IGHT F110 AFC1 GAIN YUV F104 CON R E DUCE F105 FM LE VE L ADJUS T F90 IGR LE VE L ADJUS T F91 NICAM BG LE VE L ADJUS T...

Page 38: ...8 Chinese O18 E ngilish O18 3F 01 3F 288 03 01 05 289 FF 00 63 FF 28A FF 00 3C FF 28B NICAM AUTO MUTE F99 AGC S W OFF F88 S MALL S UR R F84 02 00 07 1 Change default value 00 to 02 28C Pow S torage F127 R Y Adj F114 C ANGLE F109 TAKE OFF YUV F108 TAKE OFF AV F107 TAKE OFF TV F106 09 00 3F 1 Added R Y Adj 2 Add Pow S torage 28D S harp logo O23 S Booster O22 00 00 03 2 Add S harp logo and S Booster ...

Page 39: ... E MAR K 2C0 2C1 2C2 2C3 2C4 2C5 2C6 2C7 2C8 2C9 2CA 2CB 2CC 2CD 2CE 2CF 2D0 2D1 2D2 2D3 2D4 2D5 2D6 2D7 2D8 2D9 2DA 2DB 2DC 2DD 2DE 2DF 2E 0 2E 1 2E 2 2E 3 2E 4 2E 5 2E 6 2E 7 2E 8 2E 9 2E A 2E B 2E C 2E D 2E E 2E F 2F0 2F1 2F2 2F3 2F4 2F5 2F6 2F7 2F8 2F9 2FA 2FB 2FC 2FD 2FE 2FF MODE L MODE L LE TTE R NO LE TTE R NO 1 0 individually selectable rating system 1 threshold selectable rating system 2 ...

Page 40: ...L1 NCM FM NCM MONO NCM S T NCM BIL2 NCM BIL1 4C 00 FF POS 29 31E A2 FM A2 S T A2 BIL1 NCM FM NCM MONO NCM S T NCM BIL2 NCM BIL1 4C 00 FF POS 30 31F A2 FM A2 S T A2 BIL1 NCM FM NCM MONO NCM S T NCM BIL2 NCM BIL1 4C 00 FF POS 31 320 A2 FM A2 S T A2 BIL1 NCM FM NCM MONO NCM S T NCM BIL2 NCM BIL1 4C 00 FF POS 32 321 A2 FM A2 S T A2 BIL1 NCM FM NCM MONO NCM S T NCM BIL2 NCM BIL1 4C 00 FF POS 33 322 A2 ...

Page 41: ...FF POS 79 350 A2 FM A2 S T A2 BIL1 NCM FM NCM MONO NCM S T NCM BIL2 NCM BIL1 4C 00 FF POS 80 351 A2 FM A2 S T A2 BIL1 NCM FM NCM MONO NCM S T NCM BIL2 NCM BIL1 4C 00 FF POS 81 352 A2 FM A2 S T A2 BIL1 NCM FM NCM MONO NCM S T NCM BIL2 NCM BIL1 4C 00 FF POS 82 353 A2 FM A2 S T A2 BIL1 NCM FM NCM MONO NCM S T NCM BIL2 NCM BIL1 4C 00 FF POS 83 354 A2 FM A2 S T A2 BIL1 NCM FM NCM MONO NCM S T NCM BIL2 ...

Page 42: ... D0 DE FAULT R ANGE WR ITE CPU CHE CK DATA CHE CK TYPE CHE CK DATA CHE CK TYPE S E TTING DATA R E MAR K 380 381 382 383 384 385 386 387 388 389 38A 38B 38C 38D 38E 38F 390 391 392 393 394 395 396 397 398 399 39A 39B 39C 39D 39E 39F 3A0 3A1 3A2 3A3 3A4 3A5 3A6 3A7 3A8 3A9 3AA 3AB 3AC 3AD 3AE 3AF 3B0 3B1 3B2 3B3 3B4 3B5 3B6 3B7 3B8 3B9 3BA 3BB 3BC 3BD 3BE 3BF MODE L MODE L LE TTE R NO LE TTE R NO ...

Page 43: ...AULT R ANGE WR ITE CPU CHE CK DATA CHE CK TYPE CHE CK DATA CHE CK TYPE S E TTING DATA R E MAR K 3C0 3C1 3C2 3C3 3C4 3C5 3C6 3C7 3C8 3C9 3CA 3CB 3CC 3CD 3CE 3CF 3D0 3D1 3D2 3D3 3D4 3D5 3D6 3D7 3D8 3D9 3DA 3DB 3DC 3DD 3DE 3DF 3E 0 3E 1 3E 2 3E 3 3E 4 3E 5 3E 6 3E 7 3E 8 3E 9 3E A 3E B 3E C 3E D 3E E 3E F 3F0 3F1 3F2 3F3 3F4 3F5 3F6 3F7 3F8 3F9 3FA 3FB 3FC 3FD 3FE 3FF MODE L MODE L LE TTE R NO LE TTE...

Page 44: ...gain Does horizontal circuit oscillate Check T701 pin 17 voltage Approx 310V at 220V AC Check F701 Check Secondary Main B Approx 130V Check CRT connector K wire and the signal on it Check Q601 and Q602 Check 185V Bias on CRT board Check IC801 Checking the protector circuit Check Q752 for 8V regulator circuit and Q751 Q754 for 5V regulator circuit Check D751 IC702 D750 and IC703 Check R701 ...

Page 45: ...801 and related circuit Check pin 60 at IC801 and related circuit Check pin 1 of SF201 Tuner and related circuit Check pin 60 at IC801 and related circuit Check pin 59 of IC801 Tuner and related circuit Check pin 58 of IC801 Does the noise level increase at max Contrast Brightness and Sound controls CIRCUITS TO BE CHECKED Tuner PIF Automatic Gain Control 5V 32V Power Source CIRCUITS TO BE CHECKED ...

Page 46: ...TION CIRCUIT TO BE CHECKED Sync Separator Circuit NO VERTICAL SCAN Vertical linearity and size are abnormal Check pins 5 6 10 and 11 of IC801 DEFECTIVE VERTICAL AMP AND VERTICAL LINEARITY Re adjust vertical size Bus Data Check IC501 Check C511 Check IC501 bias Check R503 R506 R513 R520 and C515 ...

Page 47: ...ly adjusted Re adjust the white balance The picture colour is yellow The picture colour is magenta The picture colour is cyan Check Q855 and its adjacent circuits Check Q854 and its adjacent circuits Check Q853 and its adjacent circuits Check IC801 and bias control circuit NO COLOUR PAL SECAM NO COLOUR SYNCHRONIZATION Check IC801 Check X801 4 43MHz ...

Page 48: ...35 34 33 64 63 62 61 60 59 58 57 56 55 54 53 52 51 50 49 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 16 33 48 49 17 32 3 BAS E 2 COLLE CTOR 1 E MITTE R CATHOD ANODE R E D E C B E 1 9 C B 42 I X A 3 1 9 W J Z Z 22 1 2 1 1 4 8 5 4 6 3 1 S H A R P 3 S OUR CE 2 DR AIN 1 GATE OUTPUT COMMON INPUT GND COLLE CTOR Vout S E NS E 1 7 _ B R 24L08F E X1393CE 2PC1815Y 2PC1815G 2PA1015Y PX0013 04N80C3 K A780...

Page 49: ... H 3 4 56 Vp p H 4 5 28 Vp p H 2 4 64 Vp p H 8 1 64 Vp p V 9 5 04 Vp p H 10 98 4 Vp p H 7 1 64 Vp p V 11 1112 Vp p H 13 4 68 Vp p V 14 124 0 Vp p H 15 652 0 Vp p 12 52 0 Vp p V 16 5 08 Vp p H 17 5 04 Vp p V 5 5 84 Vp p H 6 6 12 Vp p H 18 108 8 Vp p H 19 104 8 Vp p H 20 124 8 Vp p H ...

Page 50: ...21HF2 SS 8 1 21HF2 SS Service Manual CHAPTER 8 CAHSSIS LAYOUT 1 CHASSIS LAYOUT A B C D E F G H I J 1 2 3 4 5 6 7 8 9 10 ...

Page 51: ...21HF2 SS 9 1 21HF2 SS Service Manual CHAPTER 9 BLOCK DIAGRAM 1 BLOCK DIAGRAM CRT UNIT A B C D E F G H I J 1 2 3 4 5 6 7 8 9 10 ...

Page 52: ...21HF2 SS 9 2 2 BLOCK DIAGRAM MAIN UNIT A B C D E F G H I J 1 2 3 4 5 6 7 8 9 10 ...

Page 53: ...21HF2 SS 9 3 11 12 13 14 15 16 17 18 19 10 ...

Page 54: ...CONDITIONS PARTS MARKED WITH ARE IMPOTANT FOR MAIN 1 Voltages in parenthesis measured with no signal TAINING THE SAFETY OF THE SET BE SURE TO REPLACE THESE 2 V oltages without parenthesis measured with 3mV B PARTS WITH SPECIFIED ONES FOR MAINTAINING THE SAFETY W or Colour signal AND PERFORMANCE OF THE SET 3 All the voltages in each point are measured with VTVM SERVICE PRECAUTION THE AREA ENCLOSED ...

Page 55: ...21HF2 SS 11 1 21HF2 SS Service Manual CHAPTER 11 SCHEMATIC DIAGRAM 1 SCHEMATIC DIAGRAM CRT UNIT A B C D E F G H I J 1 2 3 4 5 6 7 8 9 10 ...

Page 56: ...21HF2 SS 11 2 2 SCHEMATIC DIAGRAM MAIN UNIT A B C D E F G H I J 1 2 3 4 5 6 7 8 9 10 ...

Page 57: ...21HF2 SS 11 3 11 12 13 14 15 16 17 18 19 10 ...

Page 58: ...21HF2 SS 12 1 21HF2 SS Service Manual CHAPTER 12 PRINTED WIRING BOARD ASSEMBLIES 1 PWB A MAIN UNIT 1 MAIN UNIT Component Side A B C D E F G H I J 1 2 3 4 5 6 7 8 9 10 ...

Page 59: ...21HF2 SS 12 2 11 12 13 14 15 16 17 18 19 10 ...

Page 60: ...21HF2 SS 12 3 2 MAIN UNIT Wiring Side A B C D E F G H I J 1 2 3 4 5 6 7 8 9 10 ...

Page 61: ...21HF2 SS 12 4 11 12 13 14 15 16 17 18 19 10 ...

Page 62: ...21HF2 SS 12 5 2 PWB B CRT UNIT Component Side 1 CRT UNIT Component Side A B C D E F G H I J 1 2 3 4 5 6 7 8 9 10 ...

Page 63: ...to replace these parts with specified ones for This document has been published to be used for after sales service only The contents are subject to change without notice 21HF2 SS 21HF2 SS 1 PICTURE TUBE 2 PRINTED WIRING BOARD ASSEMBLIES 3 MAIN UNIT 4 CRT UNIT 5 MISCELLANEOUS PARTS 6 SUPPLIED ACCESSORIES 7 CABINET PARTS 8 PACKING PARTS INDEX ...

Page 64: ...PD601AR Q1073 VS2PD601AR 1Y AB R 2PD601AR D201 RH EX0676GEZZY AA R Zener Diode 32 5V D203 VHD1SS119 1Y AA R Diode 1SS119 D204 VHD1SS119 1Y AA R Diode 1SS119 D393 RH DX0247CEZZ AE R Diode DX0247CE D502 RH EX0652GEZZY AB R Zener Diode 17V D503 RH EX0612GEZZY AB R Zener Diode 5 2V D504 RH EX0654CEZZY AD R Zener Diode 7 5V D505 RH DX0441CEZZY AC R Diode DX0441CE D510 RH DX0131CEZZY AC R Diode DX0131CE...

Page 65: ...310 VCEA0A1HW225M AB R 2 2 50V Electrolytic C311 VCEA0A1HW105M AB R 1 50V Electrolytic C312 VCEA0A1HW105M AB R 1 50V Electrolytic C313 VCKYCY1HB392KY AA R 3900p 50V Ceramic C377 VCEA0A1CW107M AC R 100 16V Electrolytic C383 VCEA0A1CW106M AB R 10 16V Electrolytic C391 VCKYPA1HB102K AA R 1000p 50V Ceramic C392 VCQYTA1HM103J AB R 0 01 50V Mylar C393 VCEA0A1EW108M AD R 1000 25V Electrolytic C451 VCEA0A...

Page 66: ... 16V Ceramic C834 VCEA0A1CW107M AC R 100 16V Electrolytic C835 VCEA0A1CW106M AB R 10 16V Electrolytic C837 VCEA0A1HW105M AB R 1 50V Electrolytic C838 VCEA0A1CW106M AB R 10 16V Electrolytic C839 VCKYCY1HB392KY AA R 3900p 50V Ceramic C840 VCKYCY1EF104ZY AA R 0 1 25V Ceramic C841 VCCCCY1HH220JY AA R 22p 50V Ceramic C842 VCEA9M1HW474M AB R 0 47 50V Electrolytic C843 VCEA9M1HW105M AB R 1 50V Electrolyt...

Page 67: ...4 VRD RA2BE683JY AA R 68k 1 8W Carbon R305 VRS CY1JF274JY AA R 270k 1 16W Metal Oxide R310 VRS CY1JF473JY AA R 47k 1 16W Metal Oxide R311 VRD RA2BE272JY AA R 2 7k 1 8W Carbon R313 VRS CY1JF102JY AA R 1k 1 16W Metal Oxide R314 VRS CY1JF472JY AA R 4 7k 1 16W Metal Oxide R315 VRS CY1JF222JY AA R 2 2k 1 16W Metal Oxide R318 VRD RA2BE680JY AA R 68 1 8W Carbon R321 VRS CY1JF681JY AA R 680 1 16W Metal Ox...

Page 68: ...W Carbon R754 VRS KA3NG220JY AD R 22 7 0W Metal Oxide R755 VRS VV3DB150JY AA R 15 2W Metal Oxide R756 VRS VV3DB101JY AA R 100 2W Metal Oxide R760 VRD RA2BE123JY AA R 12k 1 8W Carbon R766 VRS CY1JF333JY AA R 33k 1 16W Metal Oxide R768 VRS CY1JF332JY AA R 3 3k 1 16W Metal Oxide R801 VRD RA2BE273JY AA R 27k 1 8W Carbon R802 VRS CY1JF682JY AA R 6 8k 1 16W Metal Oxide R803 VRS CY1JF103JY AA R 10k 1 16W...

Page 69: ... 1 16W Metal Oxide R1087 VRD RA2BE391JY AA R 390 1 8W Carbon R1090 VRS CY1JF101JY AA R 100 1 16W Metal Oxide R1091 VRS CY1JF103JY AA R 10k 1 16W Metal Oxide R1095 VRS CY1JF101JY AA R 100 1 16W Metal Oxide R1840 VRS CY1JF395JY AA R 3 9 M 1 16W Metal Oxide R1841 VRS CY1JF395JY AA R 3 9 M 1 16W Metal Oxide R1850 VRS CY1JF681JY AA R 680 1 16W Metal Oxide R1851 VRS CY1JF101JY AA R 100 1 16W Metal Oxide...

Page 70: ...Carbon R859 VRS VV3DB123J AA R 12K 2W Metal Oxide R864 VRD RA2BE470JY AA R 47 1 8W Carbon R861 VRS VV3DB123J AA R 12K 2W Metal Oxide R863 VRS VV3DB123J AA R 12K 2W Metal Oxide R876 VRD RA2BE121JY AA R 120 1 8W Carbon R877 VRD RA2BE121JY AA R 120 1 8W Carbon R878 VRD RA2BE121JY AA R 120 1 8W Carbon R880 VRD RM2HD332JY AA R 3 3k 1 2W Carbon R881 VRD RM2HD332JY AA R 3 3k 1 2W Carbon R882 VRD RM2HD332...

Page 71: ...abinet 1 2 JBTN A189WJSA AC R Power Button 1 3 MSPRC0005PEFW AB R Power Button Spring 1 4 GCOVAA527WJSA AC R R C Cover 1 5 HBDGB3142CESA AG R SHARP Badge 1 6 GDORFA054WJKA AK R Door 1 7 MSPRPA031WJFW AB R Door Spring 1 8 HiNDPA996WJSA AD R Indication Plate 2 CCABBA452WEV0 BD R Rear Cabinet Ass y 2 1 Not Available Rear Cabinet 2 1 2 1 4 1 3 1 7 1 8 1 5 1 6 1 1 1 ...

Page 72: ...RANK NEW MARK PART RANK DESCRIPTION 8 PACKING PARTS NOT REPLACEMENT ITEM S1 SPAKCB894WJZZ Packing Case S2 SPAKXA308WJZZ Buffer Material S3 SSAKH0016PEZZ Wrapping Sheet S4 SSAKA0031PEZZ Wrapping Sack S5 TLABKA008WJZZ Barcord Label X2 S3 S2 S1 S5 S4 X1 ...

Page 73: ...COPYRIGHT 2005 BY SHARP CORPORATION ALL RIGHTS RESERVED No part of this publication may be reproduced stored in a retrieval system or transmitted in any form or by any means electronic mechanical photocopying recording or otherwise without prior written permission of the publisher SHARP CORPORATION AV Systems Group Quality Reliability Control Center Yaita Tochigi 329 2193 Japan TQ1865 S Mar 2005 P...

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