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Sony Trinitron CPD-420GS Service Manual
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Sony Trinitron CPD-420GS Service Manual

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Picture tube
0.25 - 0.27 mm aperture grill pitch
19 inches measured diagonally
90-degree deflection
Trinitron
Video image area
(18" maximum viewing image)
Approx. 365 x 274 mm (w/h)
3/8
(14
Resolution
Horizontal: Max 1600 dots
Vertical: Max. 1200 lines
Standard image area
Approx. 352 x 264 mm (w/h)
7/8
(13
Input Signal
Video
Analog RGB (75 ohms typical)
0.7 V
Sync
External HD/VD, Composite
Polarity Free TTL
Video Composite (Sync on Green)
0.3 V
MICROFILM
SPECIFICATIONS
7/8
x 10
inches)
1/2
x 10
inches)
, Positive
p-p
, Negative
p-p
Canadian Model
D98
Power Consumption
Maximum
130 W
Nominal
100 W
Deflection frequency
Horizontal: 30 to 96 kHz
Vertical: 48 to 120 Hz
AC input voltage / current
100 to 120 V, 50/60 Hz, 1.7 A
220 to 240, 50/60 Hz, 1.2 A
Dimensions
444 x 467 x 455 (w/h/d)
1/2
(17
Mass
Approx. 26 kg (57 lb 5 oz)
Design and specifications are subject to change without notice.
CPD-420GS
US Model
Chassis No. SCC-L20A-A
CPD-420GST
AEP Model
Chassis No. SCC-L20D-A
CHASSIS
1/2
x 18
x 18 inches)

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Summary of Contents for Sony Trinitron CPD-420GS

  • Page 1 CPD-420GS US Model Canadian Model Chassis No. SCC-L20A-A CPD-420GST AEP Model Chassis No. SCC-L20D-A CHASSIS SPECIFICATIONS Picture tube 0.25 - 0.27 mm aperture grill pitch Power Consumption 19 inches measured diagonally Maximum 130 W 90-degree deflection Nominal 100 W Trinitron Video image area (18”...
  • Page 2 CPD-420GS/GST POWER SAVING FUNCTION The monitor has three Power Saving modes. By sensing the NOTE: If no video signal is input to the monitor, the “NO absence of a video signal from the computer, it reduces power INPUT SIGNAL” message appears. After about 30 consumption as follows: seconds, the Power Saving function automatically puts the monitor into active-off mode and the indicator...
  • Page 3 AC leakage. Check leakage as OPERATION. REPLACE THESE COMPONENTS WITH described next. SONY PARTS WHOSE PART NUMBERS APPEAR AS SHOWN IN THIS MANUAL OR IN SUPPLEMENTS PUBLISHED BY SONY. CIRCUIT ADJUSTMENTS THAT To Exposed Metal ARE CRITICAL FOR SAFE OPERATION ARE IDENTIFIED Parts on Set IN THIS MANUAL.

  • Page 4: Table Of Contents

    CPD-420GS/GST TABLE OF CONTENTS Section Title Page GENERAL ................5 DISASSEMBLY 2-1. Cabinet Removal............12 2-2. Service Position ............12 2-3. D, H, N and A Board Removal ......... 12 2-4. Picture Tube Removal..........13 SAFETY RELATED ADJUSTMENT ....... 14 ADJUSTMENTS ...............
  • Page 5 SECTION 1 The instructions given here are partial abstracts from the Operating Instruction Manual. The page numbers shown reflect those of the Operating Instruction Manual. GENERAL...

  • Page 12: Disassembly

    CPD-420GS/GST SECTION 2 DISASSEMBLY 2-1. CABINET REMOVAL 2-2. SERVICE POSITION Two claws PUSH Cabinet H board PUSH (additional board) A board D board Two screws 1 When the D-board is (BVTP 4 x 16) placed service position, the Safety Earth Wire (green and yellow 2-3.

  • Page 13: Picture Tube Removal

    CPD-420GS/GST 2-4. PICTURE TUBE REMOVAL Demagnetization coil Two screws (BVTP 4 x 16) Tension spring A board Neck assy Deflection yoke Four screws (Tapping screw 5) Stand assy (D board) Picture tube shield Anode cap Cushion REMOVAL OF THE ANODE-CAP NOTE: Short circuit the anode of the picture tube and the anode-cap to the metal chassis, CRT shield or carbon painted on the CRT, after removing the anode.

  • Page 14: Safety Related Adjustment

    CPD-420GS/GST SECTION 3 SAFETY RELATED ADJUSTMENT When replacing parts shown in the table below, HV Hold-Down Check following operational checks must Using an external DC Power supply, apply the performed as a safety precaution against X-ray voltage shown below between cathode of D908 emissions from the unit.

  • Page 15: Adjustments

    CPD-420GS/GST SECTION 4 ADJUSTMENTS Connect the communication cable of the connector located on the D board on the monitor. Run the service software and then follow the instructions. 1-690-391-21 A-1500-819-A 3-702-691-01 Interface Unit Connector Attachment IBM AT Computer To BUS CONNECTOR as a Jig D-sub mini Din...
  • Page 16 CPD-420GS/GST Receive White cross-hatch. Convergence Specification Adjust HMC and VMC at six-pole magnet. Six-Pole Magnet A ≤ 0.25mm 0.24mm B ≤ 0.30mm 0.30mm C ≤ 0.35mm Focus adjustment Adjust focus (V) and focus (H) for optimum focus. Receive R.B. cross-hatch. Adjust H.TILT by swinging the DY neck right and left.
  • Page 17 CPD-420GS/GST NOTES: —17—...
  • Page 18 CPD-420GS/GST NOTES: —18—...

  • Page 19: Circuit Boards Location

    5-2. CIRCUIT BOARDS LOCATION 5-3. SCHEMATIC DIAGRAMS AND PRINTED WIRING BOARDS Note: • When replacing parts shown in the table below, be sure to perform the safety related adjustment. All capacitors are in µF unless otherwise noted. pF: µµF 50 WV or •...
  • Page 20 C N 1 0 1 ( 2 / 2 ) C N 8 0 1 ( 2 / 2 ) FUNC SW GND.A S2001-S2008 ( F U N C C T R L ) ( M I C R O , D S P ) SCAN1 KEY SCAN1...
  • Page 21 R030 D311 +12V CN313 +12V 1PS226-115 (VIDEO) :CHIP :PROT STBY+5V J001 :S-MICRO STB+5V IC002 C352 R330 FB302 LM2403 B.GND1 BK2125 C031 RGB OUT :CHIP IC001 1000p SHARPNESS / PREAMP CXA2066S BLUE1 500V D211 R361 JW301 C015 G.GND1 1PS226-115 (7.5) C252 FB202 :PROT GREEN1...
  • Page 22 A BOARD WAVEFORMS 4.37V 4.66V 4.37V 38.44V 52.50V 38.75V 38.13V 48.13V 51.88V 100.0 VDC above GND 0.76V 0.76V 0.76V...
  • Page 23 A BOARD IC VOLTAGE LIST IC001 0.03 54.20 0.47 1.02 13 110.10 4.58 1.42 2.07 volt 0.01 0.04 3.41 1.22 4.80 4.59 0.00 5.02 4.70 0.54 55.50 0.00 1.22 15 107.70 0.29 0.00 0.00 4.30 0.03 IC004 IC005 0.29 5.03 1.42 2.47 2.54...
  • Page 24 TO H BOARD FOR SERVICE USE CN2001 FB2105 1.1UH (POWER DEFLECTION) PIN NUMBER ON PCB H.CENT H.CENT GND.A FB899 -16V-2 SCAN1 H. LIN BAL KEY SCAN1 H.SHAPE LED1 H.SHAPE LED1 LED2 HD OUT LED2 DEGAUSS CONT DEGAUSS COM CONT HV. DET COM BRT IC703 SHUTDOWN...
  • Page 25 D BOARD TRANSISTOR D BOARD IC VOLTAGE LIST VOLTAGE LIST IC401 IC603 IC652 IC703 IC805 Q501 0.36 5.89 volt volt volt volt volt Q502 5.89 11.94 5.97 1.18 7.71 2.48 -0.05 11.91 6.68 -0.05 4.18 Q503 5.89 5.97 16.30 Q505 -0.61 -26.0 GND -15.99 6.70 -0.04...
  • Page 26 D BOARD WAVEFORMS 1.36V 128.8V 1.1KV 10.81V 59.38V 11.19V 13.06V 1.42V 8.25V 11.09V 0.05 ~ 0.7V 0.05 ~ 0.2V...
  • Page 27 D BOARD TRANSISTOR VOLTAGE LIST Q504 -12.24 -3.17 -16.46 Q506 178.50 93.70 182.20 Q508 0.07 43.70 Q509 0.07 41.30 Q510 0.00 41.40 Q511 5.02 0.00 Q512 5.02 0.00 Q513 0.07 40.43 Q602 4.85 157.80 Q901 179.10 89.20 182.20 Q902 7.98 66.50 All voltages are in V D BOARD...
  • Page 28 TO A BOARD CN309 TO A BOARD CN306 & CN311 R1010 220 :CHIP INPUT SW INPUT SW R1054 :CHIP R1084 R1085 R1086 R1089 R1044 BP CLAMP PCB PIN NUMBERS C.SYNC :CHIP R1083 100 :CHIP :CHIP :CHIP :CHIP IICCLK IICDATA R1090 R1088 R1043 R1087...
  • Page 29 N BOARD WAVEFORMS 3.38V 3.56V (8MHz) 5.03V 5.00V 3.25V...
  • Page 30 N BOARD IC VOLTAGE LIST IC1001 0.01 13 0.00 20 0.32 27 0.46 34 4.81 41 GND 48 0.06 55 5.03 pin volt 4.92 14 -0.41 21 5.02 28 0.19 35 4.83 42 3.82 49 5.02 56 GND 0.03 5.02 15 5.06 22 0.12 29 GND...
  • Page 31 N BOARD SEMICONDUCTOR LOCATION DIODE D1001 IC1001 D1002 IC1003 D1003 TRANSISTOR D1017 Q1001 D1018 Q1002 N BOARD SEMICONDUCTOR LOCATION IC1006 IC1007 IC1001 TRANSISTOR IC1002 Q1003 IC1005...

  • Page 32: Semiconductors

    CPD-420GS/GST 5-4. SEMICONDUCTORS LA6500-FA MS278FP UPC4558G2 2SC2611 2SA1162-G UPC5021-109 2SC5022-02 NJM78M05FA LA6510 24LC21AT 2SC1623-L5L6 PC123F2 36 pins IRFU110A IRFIBC44LCLF65 FMC-26UA 1RF19634G-LF35 2SC5022-02 1RL1530GSLF33 FS7KM-18A-AY 2SK2098-01MR-F119 D2L40-TA D4L20U FMQ-G5FMS GBU4JL-6088 PST574CMT-T1 STV5109 TDA8177 CXD8768Q CXD8766S/JBK CAT24WC16J-TE13 TDA8138A TLV2262IDR 1SS119-25 MTZJ-39B 1PS226-115 MTZJ-6.2B EGP10D MA111...

  • Page 33: Exploded Views

    4-060-546-21 BUTTON, POWER X-4036-132-1 SHIELD ASSY, EMI 4-060-545-01 GUIDE, LIGHT 4-067-344-01 CABINET 4-068-324-01 BUTTON, MULTI 4-067-757-01 COVER, CONNECTOR 4-044-932-31 EMBLEM (NO.8), SONY 4-068-230-01 LABEL, INFORMATION A-1372-585-A H MOUNTED PC BOARD 4-067-345-01 COVER, CABLE 8-736-400-61 ITC ASSY 19FRG-R2 4-067-346-01 HOLDER, CABLE...

  • Page 34: Chassis (Aep Model Only)

    4-060-896-01 BUTTON, POWER X-4036-132-1 SHIELD ASSY, EMI 4-060-897-01 GUIDE, LIGHT 4-067-516-01 CABINET 4-067-520-01 BUTTON, MULTI 4-063-246-01 COVER, CONNECTOR 4-044-932-11 EMBLEM (NO.8), SONY 4-067-518-01 LABEL, INFORMATION A-1372-574-A H MOUNTED PC BOARD 4-067-517-01 COVER, CABLE 8-736-400-61 ITC ASSY 19FRG-R2 4-067-346-01 HOLDER, CABLE...

  • Page 35: Packing Materials

    CPD-420GS/GST 6-3. PACKING MATERIALS 53 58 59 REF NO PART NO DESCRIPTION REMARK 1-759-641-21 DISK, INFORMATION (V2.30) 1-759-641-12 DISK, INFORMATION (V2.40) 1-783-722-11 CORD SET, POWER 1-783-632-11 CORD SET, POWER * 4-063-373-11 CUSHION (UPPER) (ASSY) * 4-063-381-21 CUSHION (UPPER) (ASSY) 3-865-054-11 MANUAL, INSTRUCTION 3-865-054-21 MANUAL, INSTRUCTION...
  • Page 36 CPD-420GS/GST NOTES: —42—...

  • Page 37: Electrical Parts List

    CPD-420GS/GST SECTION 7 ELECTRICAL PARTS LIST Note: RESISTORS The components identified by in this manual have been carefully factory-selected • The components identified by shading All resistors are in ohms for each set in order to satisfy regulations • F : nonflammable regarding X-ray radiation.
  • Page 38 CPD-420GS/GST Note: The components identified Note: Les composants identifies per un trame shading and mark are critical for et une marque sont critiques pour la safety. Replace only with part sécurité. Ne les remplacer que par une number specified. pièce portant le numéro spécifie. REF NO PART NO DESCRIPTION REMARK...
  • Page 39 CPD-420GS/GST Note: The components identified Note: Les composants identifies per un trame shading and mark are critical for et une marque sont critiques pour la safety. Replace only with part sécurité. Ne les remplacer que par une number specified. pièce portant le numéro spécifie. REF NO PART NO DESCRIPTION REMARK...
  • Page 40 CPD-420GS/GST Note: The components identified Note: Les composants identifies per un trame shading and mark are critical for et une marque sont critiques pour la safety. Replace only with part sécurité. Ne les remplacer que par une number specified. pièce portant le numéro spécifie. REF NO PART NO DESCRIPTION REMARK...
  • Page 41 CPD-420GS/GST Note: The components identified Note: Les composants identifies per un trame shading and mark are critical for et une marque sont critiques pour la safety. Replace only with part sécurité. Ne les remplacer que par une number specified. pièce portant le numéro spécifie. REF NO PART NO DESCRIPTION REMARK...
  • Page 42 CPD-420GS/GST Note: The components identified Note: Les composants identifies per un trame shading and mark are critical for et une marque sont critiques pour la safety. Replace only with part sécurité. Ne les remplacer que par une number specified. pièce portant le numéro spécifie. REF NO PART NO DESCRIPTION REMARK...
  • Page 43 CPD-420GS/GST Note: The components identified Note: Les composants identifies per un trame shading and mark are critical for et une marque sont critiques pour la safety. Replace only with part sécurité. Ne les remplacer que par une number specified. pièce portant le numéro spécifie. REF NO PART NO DESCRIPTION REMARK...
  • Page 44 CPD-420GS/GST Note: The components identified Note: Les composants identifies per un trame shading and mark are critical for et une marque sont critiques pour la safety. Replace only with part sécurité. Ne les remplacer que par une number specified. pièce portant le numéro spécifie. REF NO PART NO DESCRIPTION REMARK...
  • Page 45 CPD-420GS/GST Note: The components identified Note: Les composants identifies per un trame shading and mark are critical for et une marque sont critiques pour la safety. Replace only with part sécurité. Ne les remplacer que par une number specified. pièce portant le numéro spécifie. REF NO PART NO DESCRIPTION REMARK...
  • Page 46 CPD-420GS/GST Note: The components identified Note: Les composants identifies per un trame shading and mark are critical for et une marque sont critiques pour la safety. Replace only with part sécurité. Ne les remplacer que par une number specified. pièce portant le numéro spécifie. REF NO PART NO DESCRIPTION REMARK...
  • Page 47 CPD-420GS/GST Note: The components identified Note: Les composants identifies per un trame The components identified by in this manual have been carefully factory-selected for each set in order to satisfy regulations regarding shading and mark are critical for et une marque sont critiques pour la X-ray radiation.
  • Page 48 CPD-420GS/GST Note: The components identified Note: Les composants identifies per un trame shading and mark are critical for et une marque sont critiques pour la safety. Replace only with part sécurité. Ne les remplacer que par une number specified. pièce portant le numéro spécifie. REF NO PART NO DESCRIPTION REMARK...
  • Page 49 Sony Corporation English Sony Technology Center 98JS74193-1 Product Quality Division Printed in U.S.A. Service Promotion Department 9-978-871-01 © 1998.10...
  • Page 50 CPD-420GS/GST SERVICE MANUAL CPD-420GS US Model Canadian Model Chassis No.SCC-L20A-A CPD-420GST AEP Model Chassis No.SCC-L20D-A CHASSIS CORRECTION -1 Subject: Digital Convergence Adjustment Correct the service manual as shown. File this correction with the service manual. TRINITRON COLOR COMPUTER DISPLAY ® MICROFILM...
  • Page 51 CPD-420GS/GST Section 4 Adjustments (Page 16) Step 4 Digital Convergence Adjustment Set CONV_SWITCH_NDX to 3 Step 1 Adjust area "A" as follows: Adjust area "03" - "83" with the following register: "X DYNAMIC CONV RX03" - "X DYNAMIC CONV RX83" "Y DYNAMIC CONV RY03"...

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