Sanyo DS32225 Service Manual

Old 401 011 9004 CARBON 1JB 1/4W 1 NO

R482 - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - D

New 401 019 9709 CARBON 47 JB 1/4W 1 NO

Old 401 064 5305 OXIDE-MT 1.5 JA 2W 1 NO

R497 - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - D

New 401 066 3705 OXIDE-MT 2.7 JA 2W 1 NO

Old 645 065 9409 TRANS, FLYBACK 1 NO

T402 - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - D

New 652 001 4411 TRANS, FLYBACK 1 NO

Old 610 322 3568 ASSY, PWB, MAIN 1 NO

A100 - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - D

New 610 322 5371 ASSY, PWB, MAIN 1 NO

Old 610 322 3575 ASSY, PWB, SOCKET 1 YES

A700 - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - D

New 610 322 5388 ASSY, PWB, SOCKET 1 YES

1. IN THE CHASSIS ELECTRICAL PARTS LIST

The reason for change.

A : Misprint B : Quality Reliability C : Standardization D : Design E : Add as a possible sub F : Schematic location change G : Purchasing Request

DS32225

Model:

COLOR TELEVISION

FILE NO.

DS32225, G7TYA, PRODUCT CODE 111370493

REFERENCE No. SM780102-05

Notice

CORRECTION SERVICE FLASH

PRODUCTION CHANGE ADD INFORMATION

Please add this notice to the Service Manual listed below.

REVISION 5

Category:

U.S.A. / CANADA

Destination:

May / 15 / 2005

Date:

32225-05

Effective from: Chassis No.

SM780102-03

REF: No.

NOTE: Match the Chassis No. on the unit’s back cover with the Chassis No. in the Service Manual.

If the Service Manual Chassis No. does not match the unit’s, additional Service Literature

is required. This chassis is similar to Chassis No. 32225-03. Only the Difference Service Information is given in this manual. For detailed Service Information, refer to the Original Service Manual and Notices for Chassis No. 32225-03 used in Model DS32225 (SM780102-03).

Page & Section

Schematic

Location

Part No.

Description

Q’ty

Interchange-

ability

Reason

Page 20, Chassis Electrical Parts List

Page 22 Chassis Electrical Parts List

May / 2005 / 2000 SMC

Printed in U.S.A.

For parts or service contact

21605 Plummer Street Chatsworth, CA 91311 (U.S.A.)

300 Applewood Crescent, Concord, Ontario L4K 5C7 (CANADA)

SANYO Fisher Service Corporation

Contents

Safety Instructions . . . . . . . . . . . . . . . . . . 2

Service Adjustments. . . . . . . . . . . . . 3 - 11

Service Hints. . . . . . . . . . . . . . . . . . . . . . 11

Mechanical Disassemblies. . . . . . . . . . . 12

Chassis Electrical Parts List . . . . . . 13 - 22

Cabinet Parts List . . . . . . . . . . . . . . . . . . 23

Component and Test Point

Locations . . . . . . . . . . . . . . . . . . . 24 - 27

Schematic Insert . . . . . . . . . . . . . . . 29 - 36

Schematic Notes . . . . . . . . . . . . . . . . . 29

Pin Layouts . . . . . . . . . . . . . . . . . . . . . 29

Capacitor and Resistor Codes . . . . . . 29

Block Diagram . . . . . . . . . . . . . . . 30 - 31

Voltage Charts . . . . . . . . . . . . . . . 30 - 32

Waveforms. . . . . . . . . . . . . . . . . . . . . . 32

Main Board . . . . . . . . . . . . . . . . . . 33 - 36

CRT Socket Board . . . . . . . . . . . . . . . . 33

Specifications

Power Rating . . . . . . . . . . . . . . . . . . . . . 120V, 60Hz

85W (Avg), 2.5A (Max)

Antenna Input Impedance. . . . . . . . . . . . . . . . . 75Ω

UHF/VHF/CATV

Receiving Channel . . . . . . . . . . . . . . . . 2 - 13 (VHF),

14 - 69 (UHF),

01, 14-94, 95-125 (CATV)

Remote Ready . . . . . . . . . . 24 Key Remote Control

Sound Output . . . . . . . . . . . . . . . . . . . . . . 1.0 W/CH

Intermediate Frequency

Picture IF Carrier. . . . . . . . . . . . . . . . . . 45.75MHz

Sound IF Carrier . . . . . . . . . . . . . . . . . . 41.25MHz

Color Sub Carrier . . . . . . . . . . . . . . . . . 42.17MHz

Picture Tube. . . . . . . . . . . . . . . . . . M80JUA098X72

M80JUA098X73

Semiconductors

Integrated Circuits. . . . . . . . . . . . . . . . . . . . . . . 12

Transistors. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25

Except within Tuner and RC Pre-Amp.

Cabinet Dimensions

Width. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 755 mm

Height . . . . . . . . . . . . . . . . . . . . . . . . . . . . 732 mm

Depth. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 538 mm

REFERENCE No. SM780102-03

DS32225, G7TVM, PRODUCT CODE 111370493

DS32225

Model:

COLOR TELEVISION

FILE NO.

Notice

CORRECTION SERVICE FLASH

PRODUCTION CHANGE ADD INFORMATION

Please add this notice to the Service Manual listed below.

REVISION 3

Category :

U.S.A. / CANADA

Destination:

April / 15 / 2005

Date:

32225-03

Effective from : Chassis No.

SM780102

REF : No.

NOTE: Match the Chassis No. on the unit’s back cover with the Chassis No. in the Service Manual.

If the Service Manual Chassis No. does not match the unit’ s, additional Service Literature is

required. This chassis is similar to Chassis No. 32225-00, however, all Service Information is given in this Notice for Chassis No. 32225-03 used in Model DS32225.

Servicing should be performed by only trained and qualified service personnel.

— 2 —

SAFETY PRECAUTIONS

WARNING: The chassis of this receiver has a floating ground with the potential of one half the AC line voltage in respect to earth ground. Service should not be attempted by anyone not familiar with the precautions necessary when working on this type of equipment.

The following precautions must be observed:

1. An isolation transformer must be connected in the power line between the receiver and the AC line before any service is performed on the receiver.

2. Comply with all caution and safety-related notes provided on the side of the cabinet, inside the cabinet, on the chassis, and the picture tube.

3. When replacing a chassis in the cabinet, always be certain that all the protective devices are installed properly, such as control knobs, adjustment covers, shields and barriers.

DO NOT OPERATE THIS TELEVISION RECEIVER WITHOUT THE PROTECTIVE SHIELD IN POSITION AND PROPERLY SECURED.

4. Before replacing the back cover of the set, thoroughly inspect the inside of the cabinet to see that no stray parts or tools have been left inside.

Before returning any television to the customer, the service technician must perform the following safety checks to be sure that the unit is completely safe to operate without danger of electrical shock.

ANTENNA COLD CHECK

Remove AC plug from the 120 VAC outlet and place a jumper across the two blades. Connect one lead of an ohmmeter to the jumpered AC plug, and touch the other lead to each exposed antenna terminal (UHF and VHF antenna terminals). The resistance must measure between 1M ohm and

5.2M ohm. Any resistance value below or above this range

indicates an abnormality which requires corrective action.

LEAKAGE CURRENT CHECK

Plug the AC line cord directly into a 120 VAC outlet. (Do not use an isolation transformer for this check.) Use an AC voltmeter, that has 5000 ohms per volt or more sensitivity. Connect a 1500 ohm 10 watt resistor, paralleled by a 0.15 µF 150 VAC capacitor, between a known good earth ground (water pipe, conduit, etc.) and all exposed metal parts of the cabinet (antennas, handle bracket, metal cabinet, screw heads, metal overlays, control shafts, etc.). Measure the AC voltage across the 1500 ohm resistor. The AC voltage should not exceed 750 mV. A reading exceeding 750 mV indicates that a dangerous potential exists. The fault must be located and corrected. Repeat the above test with the receiver power plug reversed.

NEVER RETURN A RECEIVER TO THE CUSTOMER WITHOUT TAKING THE NECESSARY CORRECTIVE ACTION.

X-RADIATION PRECAUTION

The primary source of X-RADIATION in solid-state receivers is the picture tube. The picture tube is specially constructed to limit X-Ray emission. For continued X-RADIATION protection, the replacement tube must be the same type as the original (including the suffix letter in the part numbers). Excessive high voltage may produce potentially hazardous X-RADIATION. To avoid such hazards, the high voltage must be maintained within specific limits. Refer to the X-RADIATION WARNING NOTE on the CHASSIS SCHEMATIC in this service manual for specific high voltage limits. If the high voltage exceeds specified limits, check the components specified on the chassis schematic diagram and take the necessary corrective action. Carefully follow the instructions for the +B Voltage Check and the High Voltage Check to maintain the high voltage within the specified limits.

HIGH VOLTAGE HOLD-DOWN TEST

To prevent X-RADIATION from the picture tube due to excessive high voltage, a HOLD-DOWN circuit is provided in the high voltage circuit. Every time the receiver is serviced, the high voltage HOLD-DOWN circuit must be tested for proper operation. Refer to the HIGH VOLTAGE HOLDDOWN TEST in service adjustments.

PRODUCT SAFETY NOTICE

When replacing components in a receiver, always keep in mind the necessary product safety precautions. Pay special attention to the replacement of components marked with a star (★) in the parts list and in the schematic diagrams. To ensure safe product operation, it is necessary to replace those components with the exact same PARTS.

SAFETY INSTRUCTIONS

READING SHOULD NOT EXCEED 750 mV.

AC VOLTMETER

(5000 ohms per volt or more sensitivity)

TELEVISION

RECEIVER

Good earth ground such as a water pipe, conduit, etc.

AC OUTLET

1500 ohm

10 watt

0.15 µF 150V AC

To be touched to all of exposed metal parts.

Voltmeter Hook-up for Leakage Current Check.

GENERAL

This set has an on-screen Service Menu system included in the CPU that allows remote operation for most of the service adjustments. To enter the Service Menu, first disconnect the AC power cord. Then while pressing the MENU key on the front control panel, reconnect the AC power cord. The adjustments can now be made with the remote control or front control panel keys.

ON-SCREEN SERVICE MENU SYSTEM

1. Enter the Service Menu:

•While pressing the MENU key on the front control panel, reconnect the

AC power cord. The Service Menu Display will now appear. See Figure 1.

2. Service Adjustments:

•Press the ▲ or ▼ key to select the desired service menu item you

want to adjust. (See page 5 for On-screen Service Menu.)

•Use the + or – key or number keys to adjust the data.

The + or – keys will increase or decrease the data sequentially. The number keys (0 ~ 7) toggle only their respective bits between 1 and 0 and are used to change the Sub-Address. For example to change bit 5 press the number 5 key. See below.

3. Exit from the Service Menu:

•Press the MENU key to turn off the Service Menu display.

SERVICE ADJUSTMENTS

— 3 —

IC802 (EEPROM) REPLACEMENT

When IC802 (EEPROM) is replaced, IC801 (CPU) will automatically write the initial reference data into IC802 for basic TV operation. However, the bus data should be checked and some bus data should be set up before attempting the service adjustments. (See pages 5 – 7, Table 1, for detailed bus data information.)

INITIAL BUS DATA SETUP

Note: When IC802 (EEPROM) is replaced, change the following initial reference data for proper TV operation before

attempting service adjustments.

1. Disconnect the AC power cord (AC 120V line).

2. While pressing the MENU key, reconnect the AC power cord. The Service Menu display will now appear.

3. Select NO. 3B SCN (Sub Contrast) with ▲ or ▼ key. Adjust the data with + or – key for 2B.

4. Select NO. 3C SCO (Sub Color) with ▲ or ▼ key. Adjust the data with + or – key for 08.

5. Select NO. 3D STI (Sub Tint) with ▲ or ▼ key. Adjust the data with + or – key for 1C.

6. Select NO. 3E SB (Sub Bright) with ▲ or ▼ key. Adjust the data with + or – key for 15.

7. Select NO. 51 VS (V Size) with ▲ or ▼ key. Adjust the data with + or – key for 1D.

8. Select NO. 54 BLK7SSL3 (Blk Str Dis / Blk Str Cha / S Slice Dn2 / S Slice Dn1) with ▲or ▼ key. Adjust the data with num- ber keys for A0.

9. Select NO. 55 AFC7OSD5OM3BSG2CA1 (AFC G Up / AFC G Dn / OSD Level / OSD / OM Det) with ▲ or ▼ key. Adjust the data with number keys for 84.

10. Select NO.56 VSD7ASD6HP4 (V Sync Det / Auto Slice Dn / FBP Vth L / H Phase) with ▲ or ▼ key. Adjust the data with number keys for 07.

11. Select NO. 68 S4G7STR6CRP3 (SIF4.5 Gain Dn / S Trap Fine LSB / Cr Ped Adj ) with ▲ or ▼ key. Adjust the data with number keys for 8B.

12. Select NO. 69 CBCR7CBP3 (CbCr Pedestal On / CbCr Gain Up / Cb pedestal Fine Adj) with ▲ or ▼ key. Adjust the data with number keys for CC.

3C SCO 15 00010101

Figure 1. Service Menu Display

ITEM NO.

TITLE

BINARY DATA (8 bit)

HEX DATA

(b7) (b6) (b5) (b4) (b3) (b2) (b1) (b0)

0 1 0 1 0 1 1 0

BINARY DATA (8 bit)

— 4 —

INITIAL BUS DATA SETUP (Cont.)

13. Select NO. 6B PCW (Picture Width) with ▲ or ▼ key. Adjust the data with number keys for 28.

14. Select NO. 6C PAR (E-W Parabola) with ▲ or ▼ key. Adjust the data with number keys for 26.

15. Select NO. 6D COR (E-W Corner) with ▲ or ▼ key. Adjust the data with number keys for 14.

16. Select NO. 6E TRA (Trapezium) with ▲ or ▼ key. Adjust the data with number keys for 3B. 17 Select NO. 85 HR (OSD H-Position) with ▲ or ▼ key. Adjust the data with number keys for 15.

18. Select NO. 86 SBO (Sub Bright Offset) with ▲ or ▼ key. Adjust the data with number keys for 16.

19. Select NO.8A DCL (YUV Color Offset) with ▲or ▼ key. Adjust the data with number keys for 0D.

20. Select NO. 8B DTN (YUV Tint Offset) with ▲ or ▼ key. Adjust the data with number keys for F3.

21. Select NO. 8D ECN (16:9 Contrast Offset) with ▲ or ▼ key. Adjust the data with number keys for EA.

22. Select NO. 91 EVS (16:9 V Size Offset) with ▲ or ▼ key. Adjust the data with number keys for F3.

23. Select NO. 92 EVP (16:9 V Position Offset) with ▲ or ▼ key. Adjust the data with number keys for 04.

24. Select NO. 9C VA2 (AV Mode AFC1 Gain Up 2) with ▲ or ▼ key. Adjust the data with number keys for 00.

25. Select NO. 9E RYT (RF Y Delay Time Adj) with ▲ or ▼ key. Adjust the data with number keys for 02.

26. Select NO. A0 SYT (S In Y Delay Time Adj) with ▲ or ▼ key. Adjust the data with number keys for 03.

27. Select NO. A4 VKL (V Kill At Power Off) with ▲ or ▼ key. Adjust the data with number keys for 0F.

28. Press the MENU key to turn off the Service Menu display.

SERVICE ADJUSTMENTS (Cont.)

No. TITLE

INITIAL REFERENCE INITIAL SETUP INITIAL SETUP

FUNCTION

DATA HEX DATA HEX DATA BINARY 3B SCN 20 2B* 00101011 Sub Contrast (5~0) 3C SCO 0F 08* 00001000 Sub Color (4~0) 3D STI 0F 1C* 00011100 Sub Tint (4~0)

3E SB 05 15* 00010101 Sub Bright (5~0) 3F SSH 1A 1A 00011010 Sub Sharpness (4~0) 40 RFAGC 2F 2F 00101111 RF AGC (6~0) 41 VCO5 1D 1D 00011101 VIF VCO Adj (5~0) 42 EXT6CL5TS3BS1T0 29 29 00101001 V Mute (7) A Ext (6) C Clip (5) C Trap (4) Video T (3) ABCL (2) 43 AT 00 00 00000000 Audio ATT (6~0) 44 SHP5 00 00 00000000 ABCL Gain (7) AFT Defeat (6) Video Tone (5~0) 45 CNT6 00 00 00000000 EXE RGBC Clip Off (7) Contrast (6~0) 46 VG7DLF2DLT2 83 83 10000011 V Gain (7~5) Y/C (4) EXT (3) Y DL Fine Adj (2) Y DL T Adj (1~0) 47 VDE7TNT6 00 00 00000000 VIF Defeat (7) Tint (6~0) 48 CLR6 00 00 00000000 Blue Back (7) Color (6~0)

49 HVBL7 00 00 00000000 HV BLK Off (7) 4A BRT7 00 00 00000000 Bright (7~0) 4B RD6 40 40 01000000 Force Mono (7) Drive R (6~0) 4C BD6 40 40 01000000 Drive B (6~0) 4D RB 00 00 00000000 Bias R (7~0)

4E GB 00 00 00000000 Bias G (7~0)

4F BB 00 00 00000000 Bias B (7~0)

50 HVCO2 1C 1C 00011100 White Back (7) H VCO Adj (2~0)

51 VS5 19 1D* 00011101 V Size (5~0)

52 MON7GA3CTRF2 0E 0E 00001110 Monitoring (7~4) Gamma Control (3~2) C Trap Fine Adj (1~0)

53 VW6YSW5VSHT2 10 10 00010000 H-Free (7) V 1Win (6) Ysw LPF (5) H St (4) Serv Sw V Sh (2~0)

54 BLK7SSL3 D0 A0* 10100000 Blk Str Dis (7~6) Blk Str Cha (5~5) S Sli Dn2 (3) S Sli Dn 1

55 AFC7OSD5OM3BSG2CA1

80 84* 10000100 AFC G Up (7) AFC G Dn (6) OSD Level (5) OSD (4) OM Det (3) 56 VSD7ASD6HP4 0A 07* 00000111 V Sync Det (7) Auto Slice Dn (6) FBP Vth L (5) H Phase (4~0) 57 BSTNT6 00 00 00000000 YCbCr Sw (7) Baseband Tint (6~0) 58 RSV18 20 20 00100000 Not Used) 59 RSV19 20 20 00100000 Not Used)

5A RSV1A 20 20 00100000 Not Used) 5B RSV1B 20 20 00100000 Not Used) 5C VSC5 B3 B3 10110011 V S-Correction (5~0) 5D VAGC6VL5 57 57 01010111 V AGC (6) V Linearity (5~0)

5E STRP7 00 00 00000000 S-Trap Off (7) 5F STFA7 90 90 10010000 S-Trap Fine Adj (7~5) 60 STF7FHT6 00 00 00000000 S-Trap Fine Adj MSB (7) Force H Tone (6) 61 VSD7CR3CB1 00 00 00000000 CrDL Fine Adj (3~2) CbDL Fine Adj (1~0) 62 VBLK7AFCGU6 40 40 01000000 V Blk Half (7) AFC2 Gain Up (6) 63 RMU7RMC6CTI3 08 08 00001000 R MTX Up (7) R MTX Dn (6) CTI (3) 64 SSDN6 40 40 01000000 S Slice Down 3 (6) 65 STS3FC0 00 00 00000000 S-Trap Self2 (3) S-Trap Self1 (2) S-Trap Test (1) Force Color (0) 66 AFCGU7 80 80 10000000 AFC1 Gain Up2 (7) 67 AFCIF6VSD3IFAM1 48 48 01001000 AFC1 IF Cont (6) V Sync Det2 (3) IF AGC Mode (1) 68 S4G7STR6CRP3 88 8B* 10001011 SIF4.5 Gain Dn (7) S Trap Fine LSB (6) Cr Ped Fine Adj (3~0) 69 CBCR7CBP3 08 CC* 11001100 CbCr Ped On (7) CbCr Gain Up (6) Cb Ped Fine Adj (3~0)

6A SIF7VT5AMF432 20 20 00100000 SIF PAL INV (7) SIF PAL (6) VTH HYS Off (5) AMF CUR Dn (4) 6B PCW 20 28* 00101000 Picture Width (5~0)

— 5 —

Table 1. ON-SCREEN SERVICE MENU

When IC802 (EEPROM) is replaced, check the bus data to confirm they are the same as below. The shaded menu should be checked and be set up or readjusted according to the procedures described in the following pages. Initial Setup Data marked with an * should be changed from Initial Reference Data. (See pages 3 and 4 for Initial Bus Data Setup.)

— 6 —

Table 1. ON-SCREEN SERVICE MENU (Continued)

SERVICE ADJUSTMENTS (Cont.)

No. TITLE

INITIAL REFERENCE INITIAL SETUP INITIAL SETUP

FUNCTION

DATA HEX DATA HEX DATA BINARY 6C PAR 23 26* 00100110 E-W Parabola (5~0) 6D COR 10 14* 00010100 E-W Corner (4~0) 6E TRA 40 3B* 00111011 Trapezium (6~0) 6F HCC 03 03 00000011 H-Comp (6~4) H-Cent DAC (2~0) 80 ATT 07 07 00000111 Attenuation -MTS Input Level (3~0) 81 WDB 20 20 00100000 Wide Band - Low Separation (5~0) 82 SPC 20 20 00100000 Spectral - High Separation (5~0) 83 OPT E4 E4 11100100 Surround (7) E/W (6) Aspect Ratio (5) VIDEO (2) 84 OP2 20 20 00100000 Game (7) Component (5) V Guide(0) 85 HR 1A 15* 00010101 OSD H-Position (6~0) 86 SBO 00 16* 00010110 Sub Bright Offset (7~0) 87 RFT 00 00 00000000 RF Tint Offset (7~0) 88 DCN 00 00 00000000 YUV Contrast Offset (7~0) 89 DBR 00 00 00000000 YUV Bright Offset (7~0) 8A DCL F8 0D* 00001101 YUV Color Offset (7~0) 8B DTN 00 F3* 11110011 YUV Tint Offset (7~0) 8C DSH FE FE 11111110 YUV Sharpness Offset (7~0) 8D ECN E0 EA* 11101010 16:9 Contrast Offset(7~0) 8E EBR 00 00 00000000 16:9 Bright Offset(7~0) 8F ECL 00 00 00000000 16:9 Color Offset(7~0) 90 ETN 00 00 00000000 16:9 Tint Offset(7~0) 91 EVS D4 F3* 11110011 16:9 V Size Offset(7~0) 92 EVP 00 04* 00000100 16:9 V Position Offset (7~0) 93 ESC 00 00 00000000 16:9 V S Correction Offset (7~0) 94 EUV 00 00 00000000 16:9 V Linearity Offset (7~0) 95 EBO 00 00 00000000 16:9 HV BLK Off (7) 96 EBH 00 00 00000000 16:9 HV BLK Half (7) 97 EWP F1 F1 11110001 16:9 E-W Parabola Offset (7~0) 98 EWC FF FF 11111111 16:9 E-W Corner Offset (7~0) 99 ETR 09 09 00001001 16:9 Trapezium Offset (7~0) 9A SBI 20 20 00100000 Sub Bias (5~0) 9B VA1 01 01 00000000 AV Mode AFC1 Gain Up 1 (7) 9C VA2 01 00* 00000001 AV Mode AFC1 Gain Up 2 (7) 9D PWT 01 01 00000001 White Back (3~0) 9E RYT 01 02* 00000010 RF Y Delay Time Adj (1~0) 9F RYF 01 01 00000001 RF Y Delay Time Fine Adj (2) A0 SYT 02 03* 00000011 S In Y Delay Time Adj (1~0) A1 SYF 00 00 00000000 S In Y Delay Time Fine Adj (2) A2 DYT 01 01 00000001 YUV Y Delay Time Adj (1~0) A3 DYF 01 01 00000001 YUV Y Delay Time Fine Adj (2) A4 VKL 0A 0F* 00001111 V Kill At Power Off (3~0) A5 RFC 00 00 00000000 RF Color Offset (7~0) A6 RFS 05 05 00000101 RF Sharpness Offset (7~0) A7 EPW FE FE 11111110 16:9 Picture Width Offset (7~0)

A8 DRV

R40 R40 01000000 Red Drive Adjustment (See Note 1.)

R40 R40 01000000 Blue Drive Adjustment (See Note 1.) – - - - Red Bias Adjustment (See Note 2.) – - - - Green Bias Adjustment (See Note 2.) – - - Blue Bias Adjustment (See Note 2.)

— 7 —

PROGRAM CODES

The microprossesor used in this model is a multi-purpose type and is used in several different models. To ensure proper operation and the correct features for your particular model, the program codes must be correct.

Note 1. Option Data 1 (NO. 83 OPT) should be hexadecimal E4 (11100100 binary). See page 4 INITIAL DATA SETUP for

set up procedure. If this program code is wrong the TV will not operate properly.

Note 2. Option Data 2 (NO. 84 OP2) should be hexadecimal 20 (00100000 binary). See page 4 INITIAL DATA SETUP for

set up procedure. If this program code is wrong the TV will not operate properly.

Note 1. Red/Blue Drive Adjustments in Service Menu NO. A8 DRV:

Adjust Red and Blue Drive Levels alternately with 1, 3, 7, and 9 keys on the remote control. See Figure 2. The Drive Level adjustment data will be written in the Service Menu No. 4B RD and 4C BD automatically.

4 5 6

7 98

RB(–)

RB(+)

BB(–)

BB(+)

(N/A)

GB(–)

(N/A)

GB(+)

(N/A)

FOR RED BIAS ADJUSTMENT

FOR BLUE BIAS ADJUSTMENT

FOR GREEN BIAS ADJUSTMENT

Figure 2.

Figure 3.

4 5 6

7 98

RD(–)

RD(+)

BD(–)

BD(+)

(N/A)

FOR RED DRIVE ADJUSTMENT

FOR BLUE DRIVE ADJUSTMENT

Note 2. Red/Green/Blue Bias Adjustments in Service Menu

A9 (No Vertical Sweep):

Adjust each Bias Level with 1, 3, 4, 6, 7, or 9 key on the remote control. See Figure 3. The Bias Level adjustment data will be written in the Service Menu No. 4D RB, No. 4E GB, and No. 4F BB automatically.

DRIVE AND BIAS ADJUSTMENTS

BIT FUNCTION

DATA

0 ~ 1 TV / HOTEL / MON N/A N/A 2 VIDEO MODE NONE YES 3 ~ 4 CLOCK N/A N/A 5 ASPECT RATIO NONE YES 6 NOT USED — — 7 SURROUND NONE YES

BIT FUNCTION

DATA

0 V-GUIDE NONE YES 1 COLOR ENHANCER N/A N/A 2 INITIAL CH & XDS N/A N/A 3 NOT USED — — 4 PIP N/A N/A 5 COMPONENT NONE YES 6 BASS & TREBLE / TONE N/A N/A 7 GAME N/A N/A

— 8 —

ANTENNA CONNECTIONS

This receiver is designed for UHF/VHF reception. A 75 ohm terminal is provided for UHF and VHF receptions. When connecting a CATV antenna system, connect the 75 ohm coaxial cable directly to the 75 ohm terminal. For 300 ohm VHF antenna, use an adapter (not included with the TV set).

CIRCUIT PROTECTION

Fuse F601 (4A) is included in the AC line. This fuse must be replaced with the proper fuse (see Parts List).

+B VOLTAGE CHECK

Connect Voltmeter + lead to TJ1 130V and – lead to ground (TE7). Connect receiver to AC 120V line. Tune receiver to an active channel. Reset the picture controls to the FACTORY PRESET levels (press remote control RESET key twice). Voltage must measure between +128.0V and +132.0V. If the voltage is out of this range, the power circuit must be checked. No +B adjustment is provided on this chassis.

HORIZONTAL CENTERING ADJUSTMENT

1. Tune receiver to an active channel.

2. Check that picture is in the horizontal center of TV screen. If picture is not centered horizontally, perform steps 3 ~ 6.

3. Turn off the receiver and disconnect the AC power cord.

4. While pressing the MENU key, reconnect the AC power cord. The Service Menu display will now appear.

5. Select NO. 56 VSD7ASD6HP4 (Horizontal Phase) with

▲ or ▼ key.

6. Adjust the data with + or – key for horizontal center. To turn off the Service Menu display, press the MENU key.

HORIZONTAL WIDTH ADJUSTMENT

1. Tune receiver to an active channel.

2. Check the picture for proper width. If width is not correct, perform steps 3 - 6.

3. Turn off the receiver and disconnect the AC power cord.

4. While pressing the VOLUME – key, reconnect the AC power cord. The Service Menu display will now appear.

5. Select NO. 6B PCW (Picture Width) with ▲ or ▼ key.

6. Adjust the data with numeric keys 5~2 for proper width. To turn off the Service Menu display, press the MENU key.

VERTICAL SIZE ADJUSTMENT

1. Tune receiver to an active channel.

2. Check the vertical size of the picture. If the vertical size is too large or small, perform steps 3 ~ 6.

3. Turn off the receiver and disconnect the AC power cord.

4. While pressing the MENU key, reconnect the AC power cord. The Service Menu display will now appear.

5. Select NO. 51 VS5 (Vertical Size) with ▲ or ▼ key.

6. Adjust the data with + or – key for full scan. To turn off the Service Menu display, press the MENU key.

VERTICAL CENTERING ADJUSTMENT

1. Tune receiver to an active channel.

2. C he ck that picture is in the center of TV screen. If picture center is too low, add resistor R513 (470 ohm 1W) and J520. If picture center is too high, add resistor R513 (470 ohm 1W) and J530.

RF AGC ADJUSTMENT

1. Tune receiver to strongest VHF station in your area.

2. Set contrast and brightness controls for maximum.

3. Turn off the receiver and disconnect the AC power cord (120V AC line).

4. While pressing the MENU key, reconnect the AC power cord. The Service Menu display will now appear.

5. Select NO. 40 RFAGC (RF AGC Delay) with ▲ or ▼ key.

6. Adjust the data with + or – key in the direction which causes snow to appear; then in the opposite direction until the snow just disappears.

7. To turn off the Service Menu display, press the MENU key.

VIDEO LEVEL

1. Connect color-bar generator to antenna terminals.

2. Turn off the receiver and disconnect the AC power cord (AC 120V line).

3. Connect oscilloscope to TP16 (Q131 emitter) and ground.

4. While pressing the Menu key, reconnect the AC power cord. The Service Menu will now appear.

5. Select NO. 46 VG7DLF2DLT2 (Video Gain 7~5) with the ▲ or ▼ key.

6. Adjust with the number keys (7~5) for an oscilloscope reading of 1.0 ± 0.1 VP-P at TP16. Press the MENU key to turn off the Service Menu display.

CAUTION

FOR CONTINUED PROTECTION AGAINST A RISK OF FIRE, REPLACE ONLY WITH THE SAME TYPE 4A, 125V FUSE.

ATTENTION : POUR MAINTENIR LA PROTECTION CONTRE LES RISQUES D’ INCENDIE UTILISER UN FUSIBLE DE RECHANGE DE MEME TYPE 4A, 125V.

1.0 ± 0.1 VP-P

Figure 4.

SERVICE ADJUSTMENTS (Continued)

4A 125V

— 9 —

GRAYSCALE ADJUSTMENT

1. Set the picture controls to the Auto levels or Reset (use MENU key and ▲ or ▼ key or RESET key).

2. Turn off the receiver and disconnect the AC power cord (120V AC line).

3. While pressing the MENU key, reconnect the AC power cord. The Service Menu display will now appear.

4. Select NO. 4D RB (Red Bias), NO. 4E GB (Green Bias), and NO. 4F BB (Blue Bias) with ▲ or ▼ key and set each data to 0 with + or – key.

5. Select NO. 4B RD (Red Drive) and NO. 4C BD (Blue Drive) with ▲ or ▼ key and set each data to 40 with + or – key.

6. Set NO. 3B SCN (Sub Contrast) data to 20, NO. 3C SCO (Sub Color) data to 05, NO. 3D STI (Sub Tint) to 11, NO. 3E SB (Sub-Brightness) data to 1A, and NO. 3F SSH (Sub Sharpness) data to 1A with ▲ or ▼,and + or – keys.

7. Turn Screen Control (T402) to minimum (fully counterclockwise).

8. Select the Service Menu NO. AB (No Vertical Sweep) with ▲ or ▼ key.

9. Advance Screen Control (T402) clockwise to obtain just visible one color line. If line does not appear, place this control to maximum (fully clockwise).

10. Raise each Bias Level with 3, 6, and 9 keys to obtain just visible white line. See Figure 5.

11. Select the Service Menu NO. AA DRV (Drive Adjustments) with ▲ or ▼ key.

12. Adjust Red and Blue Drive Levels alternately with 1, 3, 7, or 9 key to produce normal black and white picture in highlight areas. See Figure 6.

13. Check for proper grayscale at all brightness levels. To turn off the Service Menu display, press the MENU key.

Note: If Grayscale Adjustment is made after picture tube

replacement, check Brightness Level Adjustment.

FOCUS ADJUSTMENT

Adjust focus control (T402) for well defined scanning lines.

HIGH VOLTAGE CHECK

Note: +B (+130V) Voltage Check and Grayscale Adjustment

must be completed before attempting high voltage Check.

1. Connect high voltage voltmeter – lead to ground, and connect + lead to anode of picture tube.

2. Tune receiver to an active channel and confirm TV is operating properly.

3. Eliminate the beam current by adjusting the contrast and brightness controls to minimum.

4. Confirm high voltage is within 28.0 KV and 32.0 KV. If reading is not within range, check horizontal circuit.

No high voltage adjustment is provided on this chassis.

BRIGHTNESS LEVEL ADJUSTMENT

Note: Grayscale, RF AGC, Video Level, and High Voltage Check

must be adjusted before attempting Brightness Level Adjustment.

1. Connect a color-bar generator to the antenna terminals.

2. Switch the generator to the crosshatch pattern.

3. Reset the picture controls to the Auto levels.

4. Connect voltmeter (high impedance) + lead to terminal TP51 and – lead to terminal TP50 on main board. Set voltmeter for 1.5V ~ 3V range.

5. Turn off the receiver and disconnect the AC power cord.

6. While pressing the MENU key, reconnect the AC power cord. The Service Menu display will now appear.

7. Select NO. 3E SB (Sub Brightness) with ▲ or ▼ key.

8. Adjust the data with + or – key for 680mVDC.

9. Press the MENU key to turn off the Service Menu display.

10. Check brightness level on every active channel, readjust (repeat steps 5 ~ 9), if necessary.

Note: Do not set to excessive brightness level, otherwise

the contrast level will be suppressed.

4 5 6

7 98

RB(–)

RB(+)

BB(–)

BB(+)

(N/A)

GB(–)

(N/A)

GB(+)

(N/A)

Figure 5. Remote Control Number keys’ functions in

Service Menu NO. AB (No Vertical Sweep)

4 5 6

7 98

RD(–)

RD(+)

BD(–)

BD(+)

(N/A)

Figure 6. Remote Control Number keys’ functions in

Service Menu NO. AA DRV

FOR RED DRIVE ADJUSTMENT

FOR BLUE DRIVE ADJUSTMENT

FOR GREEN BIAS ADJUSTMENT

FOR RED BIAS ADJUSTMENT

FOR BLUE BIAS ADJUSTMENT

+ 25 hidden pages