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SERVICE MANUAL
MODEL COMMANDER DEST. CHASSIS NO. MODEL COMMANDER DEST. CHASSIS NO.
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FDL-PT222 US
LCD COLOR TV
MICROFILM
∗ Please file according to model size. .......
2.2
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FDL-PT222 SPECIFICATIONS TABLE OF CONTENTS Section Title Page 1. GENERAL Power Sources (see fig. A) ...................................................... 3 Operation (see fig. B) .............................................................. 3 External Antenna Connection (see fig. C) ............................... 4 WARNING .............................................................................. 4 2. DISASSEMBLY 2-1. Cabinets ..............................................................
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SECTION 1 GENERAL The operating instructions mentioned here are partial abstracts from the Operating Instructions Manual. The page numbers of the Operating Instruction Manual remain as in the manual. (Part no : 4-083-376-11) – 3 –
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– 4 –
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FDL-PT222 SECTION 2 DISASSEMBLY 2-1. CABINETS 1. Remove the battery cover 8. 2. Push two claws with a screwdriver or equivalent on the bottom and remove them. 1 front cabinet 2 channel button 3 B board claw 4 A board 3. While pushing the rear cabinet, remove claws of joints with the front cabinet. 4. Insert a screwdriver or equivalent to the gap on the upper side of the cabinet, and while pushing the lock spring, put it down to the rear cabinet side. 6 screw (+PTP2X6) 5. Remove the channel butto
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FDL-PT222 2-2. SERVICE POSITION Cable for service 1-900-211-84 CN602 A board CN601 Cable for service 1-900-211-84 B board CN301 T1 board CN201 J101 Mini-jack Antenna AC power adaptor – 6 –
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FDL-PT222 SECTION 3 CIRCUIT ADJUSTMENTS 3-1.A BOARD ADJUSTMENT [VIF.AFT COARSE ADJUSTMNT (T201, T202)] [SETUP] [+4.5V ALIGNMENT (RV601)] 1. Set S601 on the A board to VHF position. Using a digital voltmeter measuring the voltage between 2. Apply no signal to JL18 (RF). JL32 (+4.5V) and JL33 (GND). Adjust RV601 to obtain 3. Connect a 1 kΩ resistor between JL77 (+4.5V) and the value shown below. JL28 (RF AGC). 4. Apply a sweep signal across JL26 (IF) and JL27(IF GND). Standard Value = 4.45V± 0
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FDL-PT222 [AFT FINE ADJUSTMENT(T201)] 3-3.B BOARD ADJUSTMENT 1. Connect a 1 kilohm resistor between JL77 (+4.5V) and JL28 - B board - (RF AGC). (Component side) Note : Perform this adjustment as the last step in the process since drift may occur due to aging. 2. Switch the sweep signal to CW. RV301 fo= 45.75 MHz±5 kHz, -30±5dBm Apply the above signal between JL26 (IF) and JL27 (IF GND) and then make a fine adjustment of T201 so that the level be- tween J
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SECTION 4 DIAGRAMS 4-1. BLOCK DIAGRAM (1) BALUN CN201 T101 12 UB STRAP 2 VHF ANTENNA 3 H.P J101 EXT ANT IC201 VIF/SIF DET IF IF IF IF ANT 6 IF AMP FILTER IF IF Q201 SWF201 7 IF AMP IF LLD UB REF COIL AGC OUT 19 TU101 VIDEO AGC 3 AGC IF REF COIL TUNER DET 20 IC001 TUNER CONTROOL AGC DL 3 RV201 4 RF AGC BS BS HB SWITCH 28 COMPOSITION DEF DEFEAT Q010-012 LB 14 OUTPUT TUNING CONTROL U/V BAND 27 AUDIO SELECT FH E-VDL AUDIO SIGNAL INV. FH SWITCH 1 14 BUFFER 13 5 AUDIO DEFECT Q005 Q205 FM DET FM 15 DET
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4-2. BLOCK DIAGRAM (2) IC401 MONITOR CONTROL CN502 UB 12 CN601 CN301 CP 24 BUFFER VHF 2 2 VHF 2 40 R2 CP 1 Q403 CP 40 H.P 3 3 H.P 3 37 HSO CL2 22 CL2 2 CL2 38 UHF CLB 21 S601 +4.5V CLB 3 VHF (1/2) CLB 37 OFF CLA 20 CLA 4 CLA 36 D2 12 D2 5 D2 28 IC501 HEADPHONE AMP D3 11 AUDIO D3 6 D3 27 VCC 3 J501 10 6 D4 7 2 D4 26 AUDIO AUDIO 5 2 D1 9 RV501 D1 8 D1 25 VOL SPEAKER V+ AUDIO RES 13 TO 7 BESTB 9 RES 29 T1 BOARD CN201 TPR2 2 TPR1B 12 VM BUFFER TPR1 6 Q407 VIDEO VIDEO VIDEO TPR1 13 VM 23 SYNC. SEP. V
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4-3. CIRCUIT BOARDS LOCATION Note: The symbol display is on the component slde. MEMO The components identified by shading and mark are critical for safety. Replace only with part number specified. B The symbol indicate fast operating fuse. Replace only with fuse of same rating as maked. Terminal name of semiconductors in silk screen printed circuit ( ) * Device Printed symbol Terminal name Circuit Collector 1 Transistor Base Emitter A T1 Collector Transistor 2 Base Emitter Cathode 3 Diode Anod
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T1 BOARD : IC001 AN5707NFAP STOP DEF CHCAL BRT L/H U/V Vcc 5V 13 14 15 17 7 27 8 DEFEAT BAND AFC 5 COMPARATOR OUT SW H.P. 3 TUNING 28 BS BS ADD PLUSE WIDTH CONTROL • T1 BOARD WAVEFORMS SET SIGNAL M.M. 2 UP DET 1 2 3 DN BSTOP 30 V OUT H.syn 4 INPUT BAR OUTPUT CONTROL 31 U OUT FH 1 3.4Vp-p (H) 3.7Vp-p (H) 0.9Vp-p (H) SUD 6 18 UP BAR DISPLAY 20 VLP 10 1 3 4 5 6 7 8 9 11 2 AUTO 19 VHP POSITION RETURN STRAP 21 CON CHARGE/ ANTENNA EXT ANT BT GENERATOR DISCHAGE J101 ADJUST 22 UA INITIAL RESET T101 A
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T1 [ ] ELECTRONIC TUNRTR, VIF, SIF – T1 Board – T1 BOARD IC VOLTAGE LIST T1 BOARD DIODE Pin Volt Pin Volt Pin Volt * 1 3 4 5 6 7 8 9 2 D001 B-7 8 IC001 1 2.7 20 2.2 7 3.4 D002 B-2 7 20 21 2.9 8 GND 3 0.3 22 0.8 9 4.3 IC 4 0.5 23 2.1 10 1.6 IC001 C-2 A 5 2.5 24 2.1 11 1.6 IC201 B-6 6 2.5 25 - 12 GND TRANSISTOR 7 2.5 26 1.7 13 1.8 * Q001 D-8 1 8 4.3 27 3.8 14 3.5 Q002 D-8 !• 9- 28 0 15 2.1 Q003 B-8 1 10 0.7 29 GND 16 1.5 Q004 B-8 1 11 2.5
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8 7 6 5 1 2 3 4 3 4 1 2 5 6 7 8 9 A TO SPEAKER J501 2 CN501 2P UNREG Q401 POWER SUPPLY, D406 UN2215 MA157-TX A R513 LCD BACK LIGHT, 2.2 B CN602 :CHIP 12P CN601 HEADPHONE AMP R450 R451 AUDIO 100k 82k 12P C506 D.GND 1 C502 :CHIP 3 :CHIP 0.1 100 25V 1 2 VHF 2 6.3V 1 D.GND F:CHIP :7L RV450 C505 H.P 3 NC NC 30V 2 VHF 100 C501 50k R504 0.01 6.3V V+ 470 4.5V 4 +IN 3 H.P. :7L B:CHIP AUDIO :CHIP AUDIO 5 -IN OUTPAT 4 4.5V BRT C504 R509 C507 TO 10 GND 6 120k GND 5 30V D.GND 16V 0.22 :CHIP :7L 25V R505 TO T
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A [ ] AUDIO AMP, PC IN, BACK LIGHT – A Board – 1 3 4 5 2 A BOARD DIODE A * D406 G-5 6 D601 G-4 3 D602 D-4 5 D603 G-4 4 D604 C-5 3 D605 C-4 3 D701 D-3 – B IC IC501 G-5 TRANSISTOR * Q401 G-5 1 Q601 C-4 2 Q602 D-4 2 Q603 F-4 2 Q610 C-5 2 C Q701 G-3 2 Q702 G-3 2 VARIABLE RESISTOR RV450 C-6 RV501 D-5 RV601 C-5 D A BOARD IC VOLTAGE LIST Pin Volt < Component Side > IC501 1 - E 20 3 0.6 4 GND 5 GND 6 1.3 7 3.4 8- F G A BOARD TRANSISTOR VOLTAGE
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• B BOARD WAVEFORMS 1 2 3 4 2.0Vp-p (4.5MHz) 1.1Vp-p (4.43MHz) 1.0Vp-p (H) 0.7Vp-p (H) 5 6 7 8 4.1Vp-p (H) 1.4Vp-p (H) 1.4Vp-p (H) 1.4Vp-p (H) 3 4 10 11 1 2 5 6 7 8 9 A C411 C414 R415 R403 R409 D404 47 0.47 100p 22k 68k 4.5V :CHIP 25V 1SS355TE CH:CHIP :CHIP :CHIP F:CHIP Q402 R405 C409 C410 Q407 Q406 2SD1819A-R 68k 0.1 0.1 XP4601 :CHIP C405 25V 25V XP4601 22 R401 B:CHIP B:CHIP R411 100 6.3V 1M R414 :7L :CHIP :CHIP 22k :CHIP FP401 R406 R413 680 1 22k :CHIP N.C. R410 :CHIP 2 39k C412 R402 :CHIP TPR
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B [ ] CHROMA, LCD INTERFACE – B Board – 1 3 4 5 2 A B BOARD IC VOLTAGE LIST B BOARD Pin Volt Pin Volt Pin Volt DIODE * IC301 1 3.0 24 4.2 23 3.4 D301 B-2 3 2 3.1 IC401 1 1.3 24 - D302 B-2 3 B 3 0.6 20 25 3.8 D303 F-2 3 4- 3 0.8 26 3.3 D401 C-3 3 5 3.5 4 0.8 27 0.9 D403 F-4 3 6 2.5 5 2.7 28 0.9 D404 F-4 3 7- 6 2.7 29 0.9 D405 B-3 3 8- 7 2.8 30 0.8 IC 9 2.8 8 2.8 31 0.3 IC301 C-3 10 3.0 9 3.3 32 3.8 C IC401 C-4 11 2.9 10 1.9 33 GND 12 3.1 11 3.9
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SECTION 5 EXPLODED VIEW NOTE: 4-5. SEMICONDUCTORS • Items with no part number and no • Items marked " " are not stocked since * description are not stocked because they they are seldom required for routine The components identified by shading and are seldom required for routine service service. Some delay should be anticipated A71-2980 XN4601 SB-01-15CP mark are critial for safety. ! • The construction parts of an assembled part when ordering these items. Replace only with part number specifi
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FDL-PT222 T1 SECTION 6 ELECTRICAL PARTS LIST • Items marked " * " are not stocked since they are • CAPACITORS seldom required for routine service. Some delay PF : µµ F The components identified by shading and should be anticipated when ordering these mark are critial for safety. ! • There are some cases the reference items. Replace only with part number specified. number on one board overlaps on the • All variable and adjustable resistors have other board. Therefore, when ordering character
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FDL-PT222 The components identified by shading and mark ! are criti- cal for safety. T1 B Replace only with part number specified. REF. NO. PART NO. DESCRIPTION REMARK REF. NO. PART NO. DESCRIPTION REMARK –––––––– ––––––––– ––––––––––––– ––––––––– –––––––– ––––––––– ––––––––––––– ––––––––– R235 1-216-067-00 RES-CHIP 5.6K 5% 1/10W Q203 8-729-424-76 TRANSISTOR UN2210-TX R240 1-216-073-91 RES-CHIP 10K 5% 1/10W R241 1-216-103-00 RES-CHIP 180K 5% 1/10W R242 1-216-041-00 RES-CHIP 470 5% 1
