Sanyo DS32920 Service Manual
DS32920
Model:
COLOR TELEVISION
AS
FILE NO.
DS32920, G7ZCM, PRODUCT CODE 111361180
REFERENCE No. SM780081-04
Notice
CORRECTION
SERVICE FLASH
PRODUCTION CHANGE
ADD INFORMATION
Please add this notice to the Service Manual listed below.
REVISION 4
Category :
U.S.A. / CANADA
Destination:
August / 15 / 2005
Date:
32920-02
Effective from : Chassis No.
SM780081-02
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. 32920-02. 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. 32920-02 used in Model
DS32920-02 (SM780081-02).
1. IN THE SCHEMATIC DIAGRAMS
The MAIN BOARD SCHEMATIC DIAGRAM on page 38 has an incorrect IC501 (Vertical Output) pin
lay out. The correct IC501 pin lay out is provided on the back of this correction notice. Use the IC501
schematic provided on the back of this notice when troubleshooting the vertical section.
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
August / 2005 / 2000 SMC
Printed in U.S.A.
SCHEMATIC DIAGRAM IC501 VERTICAL OUTPUT
IC501- 3
(Vertical Output)
50 VERT
IC501- 6
(Inverting Input)
0.6V VERT
PIN 27
V OUT
IC101
E/W
IC101
PIN 26
9V
LA7846N
IC501
★
<VERTICAL-OUT ->
<E/W>
1098765432176
C502
VCC
IN
5
4
OUT
321
13.7V 27.1V 2.9V 2.9V 27.2V 2.4V 0.6V 0.6V
35EM
220
D501
C506
4.7K
R503
R462
1.8K
C462
CL
CJ100
FK0.018(BF:D)
:FJ0.018(BF:D)
C508
CJ47G
D502
★
2SJ18
R463
R509
1/6NF18K
R504
1/6NF
R506
C463
10K
820
FJ0.012
(D:BF)
R507
1/2DJ
R505
1/2DJ
1.5
AE
EK2.2
C503
TO
1.5
L414
POWER FAIL
PIN 3
IC801
GND
R517
33K
D508
R
FK0.15
C511
★
(BE:D)
:FJ0.15
(BE:D)
KX5P
C516
EM10
R518
1/10GJ
12KC
★
R511
2SJ
KX4P
TO
180
R516
YOKE
2SJ
★
180
X
R512
R508
1/6NF
33K
C504
25EM
R513
1SJ470
2200
H
TO
PCC
PCC
BOARD
26V
K16P
PINS 1 & 2
DS32920
Model:
COLOR TELEVISION
AS
FILE NO.
DS32920, G7ZAM, PRODUCT CODE 111361180
REFERENCE No. SM780081-03
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:
August / 15 / 2005
Date:
32920-00
Effective from : Chassis No.
SM780081
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. 32920-00. 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. 32920-00 used in Model
DS32920 (SM780081).
1. IN THE SCHEMATIC DIAGRAMS
The MAIN BOARD SCHEMATIC DIAGRAM on page 42 has an incorrect IC501 (Vertical Output) pin
lay out. The correct IC501 pin lay out is provided on the back of this correction notice. Use the IC501
schematic provided on the back of this notice when troubleshooting the vertical section.
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
August / 2005 / 2000 SMC
Printed in U.S.A.
SCHEMATIC DIAGRAM IC501 VERTICAL OUTPUT
IC501- 3
(Vertical Output)
50 VERT
IC501- 6
(Inverting Input)
0.6V VERT
PIN 14
V OUT
IC201
ABL
PIN 3
IC201
Q340-E
9V
D471
D473
<VERTICAL-OUT ->
R472
1/10GJ
<E/W>
1098765432176
VCC
IN
390KC
D472
R471
C502
R
C471
J
1/10GJ
220KC
35EM
220
KK0.01
LZB
D501
R462
1.8K
C462
CJ100
CL
4.7K
R503
R463
2SJ18
★
FJ0.012
C463
R507
TO
(D:BF)
1/2DJ
1.2
L414
POWER FAIL
PIN 3
IC801
LA7846N
IC501
★
OUT
GND
30.2V 30.2V15.7V 3.3V3.3V 2.4V 0.6V 0.6V
5
4
321
R517
33K
D508
R
FK0.15
C511
★
(BE:D)
:FJ0.15
(BE:D)
KX5P
C516
EM10
R518
1/10GJ
R511
C506
FK0.018(BF:D)
:FJ0.018(BF:D)
D502
18KC
★
2SJ
180
R516
KX4P
TO
YOKE
★
2SJ
C508
CJ68G
180
R509
1/6NF18K
X
R512
R504
1/6NF
R506
R508
1/6NF
10K
820
39K
R505
C503
EK2.2
C504
25EM
R513
1SJ470
1/2DJ
1.2
AE
2200
H
TO
PCC
PCC
BOARD
26V
K16P
PINS 1 & 2
Contents
Safety Instructions . . . . . . . . . . . . . . . . . . 2
Service Adjustments. . . . . . . . . . . . . 3 - 11
Service Hints. . . . . . . . . . . . . . . . . . . . . . 11
Mechanical Disassemblies. . . . . . . . . . . 12
Chassis Electrical Parts List . . . . . . 13 - 25
Cabinet Parts List . . . . . . . . . . . . . . . . . . 26
Component and Test Point
Locations . . . . . . . . . . . . . . . . . . . 27 - 32
Schematic Insert . . . . . . . . . . . . . . . 33 - 40
Schematic Notes . . . . . . . . . . . . . . . . . 33
Pin Layouts . . . . . . . . . . . . . . . . . . . . . 33
Capacitor and Resistor Codes . . . . . . 33
Block Diagram . . . . . . . . . . . . . . . 34 - 35
Voltage Charts . . . . . . . . . . . . . . . 34 - 36
Waveforms. . . . . . . . . . . . . . . . . . . . . . 36
Main PC Board . . . . . . . . . . . . . . . 37 - 40
Audio/Video Board. . . . . . . . . . . . 39 - 40
CRT Socket Board . . . . . . . . . . . . . . . . 37
Pincushion Correction Board . . . . . . . 37
Specifications
Power Rating . . . . . . . . . . . . . . . . . . . . . 120V, 60Hz
100W (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 . . . . . . . . . . 39 Key Remote Control
Sound Output . . . . . . . . . . . . . . . . . . . . . . 3.0 W/CH
Intermediate Frequency
Picture IF Carrier. . . . . . . . . . . . . . . . . . 45.75MHz
Sound IF Carrier . . . . . . . . . . . . . . . . . . 41.25MHz
Color Sub Carrier . . . . . . . . . . . . . . . . . 42.17MHz
Picture Tube. . . . . . . . . . . . . . . . . . . A80ERF042X13
Semiconductors
Integrated Circuits. . . . . . . . . . . . . . . . . . . . . . . 15
Transistors. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50
Except within Tuner and RC Pre-Amp.
Cabinet Dimensions
Width. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 768 mm
Height . . . . . . . . . . . . . . . . . . . . . . . . . . . . 732 mm
Depth. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 577 mm
REFERENCE No. SM780081-02
DS32920, G7ZCM, PRODUCT CODE 111361180
AS
FILE NO.
SM780081
REF : No.
COLOR TELEVISION
Notice
CORRECTION
SERVICE FLASH
PRODUCTION CHANGE
ADD INFORMATION
Please add this notice to the Service Manual listed below.
REVISION 02
Category :
DS32920
Model:
U.S.A. / CANADA
Destination:
SEPTEMBER / 15 / 2003
Date:
32920-02
Effective from : Chassis 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. 32920-00, however, all Service Information is
given in this Notice for Chassis No. 32920-02 used in Model DS32920.
— 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 VOL T AGE 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 AD JUSTMENTS
— 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. 3C SCO (Sub Color) with ▲ or ▼ key. Adjust the data with + or – key for 25.
4. Select NO. 3D STI (Sub Tint) with ▲ or ▼ key. Adjust the data with + or – key for 0C.
5. Select NO. 3F SSH (Sub Sharpness) with ▲ or ▼ key. Adjust the data with + or – key for 05.
6. Select NO. 40 AFC6HFR (AFC / H Frequency) with ▲ or ▼ key. Adjust the data with number keys for BF.
7. Select NO. 41 VTR7HP (V Trans / H Phase with ▲ or ▼ key. Adjust the data with + or – key for 12.
8. Select NO. 42 VS (V Size) with ▲ or ▼ key. Adjust the data with + or – key for 2F.
9. Select NO. 43 VSP7VPO (V Sync Sep / V Position) with ▲ or ▼ key. Adjust the data with number keys for 20.
10. Select NO. 44 CDM5UVL (V Count Dn Mode / V Lin Top) with ▲ or ▼ key. Adjust the data with number keys for 0F.
11. Select NO. 45 VC5LVL (V Compresion / V Lin Bottom) with ▲ or ▼ key. Adjust the data with number keys for 4A.
12. Select NO. 46 VSC (V S Correction) with ▲ or ▼ key. Adjust the data with + or – key for 0C.
13. Select NO. 4A RD (Red Drive) with ▲ or ▼ key. Adjust the data with + or – key for 3A.
14. Select NO. 4C BD (Blue Drive) with ▲ or ▼ key. Adjust the data with + or – key for 3A.
15. Select NO. 4D SBI (Sub Bias) with ▲ or ▼ key. Adjust the data with + or – key for 1C.
16. Select NO. 50 OSD (On Screen Display Contrast) with ▲ or ▼ key. Adjust the data with + or – key for 0A.
17. Select NO. 54 FLS (Y/C Filter Mode) with ▲ or ▼ key. Adjust the data with + or – key for 83.
18. Select NO. 57 YGM6DCR4BSS2BSG (Y Gamma / DC Reset / Black Streak Start / Black Streak Gain) with ▲ or ▼ key.
Adjust the data with number keys for 61.
SCO
3C 1C 00011100
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)
INITIAL BUS DATA SETUP (Cont.)
19. Select NO. 58 AFC7CBP5 (Auto Flesh / C Band Pass Filter) with ▲ or ▼ key. Adjust the data with number keys for C0.
20. Select NO. 59 DIG6ABL5MSD4BAT (OSD D/A / ABL Defeat / Mid Stop / ABL Threshold) with ▲ or ▼ key. Adjust the data
with numbers key for 64.
21. Select NO. 5A RYA (R-Y/B-Y Angle) with ▲ or ▼ key. Adjust the data with + or – key for 00.
22. Select NO. 5F VL5BPF (Video Level / S BPF Sw) with ▲ or ▼ key. Adjust the data with + or – key for 80.
23. Select NO. 60 EWD (E/W DC) with ▲ or ▼ key. Adjust the data with + or – key for 2B.
24. Select NO. 61 EWA (E/W Amp) with ▲ or ▼ key. Adjust the data with + or – key for 24.
25. Select NO. 62 EWT (E/W Tilt) with ▲ or ▼ key. Adjust the data with + or – key for 22.
26. Select NO. 63 EWB4EWP (E/W Corner Btm / E/W Corner Top) with ▲ or ▼ key. Adjust the data with number keys for BA.
27. Select NO. 64 EWC7HLV6HSC (E/W Cor Sw / H Lock V Det / H Size Comp) with ▲ or ▼ key. Adjust the data with
number keys for 02.
28. Select NO. 65 BOW4ANG (Bow Correct / Angle Correct) with ▲ or ▼ key. Adjust the data with number keys for 86.
29. Select NO. 66 PRE6OVR4CTT (Pre Shoot Adj / Over Shoot Adj / Chroma Trap Test) with ▲ or ▼ key. Adjust the data
with number keys for 20.
30. Select NO. 67 HBL4HBR (H Blanking L / H Blanking R) with ▲ or ▼ key. Adjust the data with number keys for 2A.
31. Select NO. 6A YTH2YGA (Y TH / Y Gain) with ▲ or ▼ key. Adjust the data with number keys for 0D.
32. Select NO. 6B RWD6ROF4BWD2BOF (R Width / R Offset / B Width / B Offset) with ▲ or ▼ key. Adjust the data with
number keys for 10.
33. Select NO. 83 OPT (Asp Ratio / Comb F / Clock / Scan Veloc) with ▲ or ▼ key. Adjust the data with number keys for 3C.
34. Select NO. 84 OP2 (V Guide / Tone / AV / PIP / F/V / I-Ch / C En / C En Select) with ▲ or ▼ key. Adjust the data with
number keys for 2E.
35. Select NO. 8D HR (H Display Position) with ▲ or ▼ key. Adjust the data with + or – key for 1C.
36. Select NO. 8E SBO (Sub Bright Offset) with ▲ or ▼ key. Adjust the data with + or – key for 00.
37. Select NO. 92 DTN (YUV Sub Tint) with ▲ or ▼ key. Adjust the data with + or – key for FC.
38. Select NO. 96 DCB (YUV Cb Offset) with ▲ or ▼ key. Adjust the data with + or – key for 00.
39. Select NO. 97 DCR (YUV Cr Offset) with ▲ or ▼ key. Adjust the data with + or – key for 00.
40. Select NO. 9A ECN (16:9 Sub Contrast) with ▲ or ▼ key. Adjust the data with + or – key for F0.
41. Select NO. 9B EBR (16:9 Sub Bright) with ▲ or ▼ key. Adjust the data with + or – key for FB.
42. Select NO. 9E EVS (16:9 Sub V Size) with ▲ or ▼ key. Adjust the data with + or – key for F5.
43. Select NO. A0 EEA(16:9 Sub E/W Amp) with ▲ or ▼ key. Adjust the data with + or – key for EF.
44. Select NO. A1 EET (16:9 Sub E/W Tilt) with ▲ or ▼ key. Adjust the data with + or – key for FF.
45. Select NO. A2 EEP (16:9 Sub E/W Corner Top) with ▲ or ▼ key. Adjust the data with + or – key for FC.
46. Select NO. A3 EEB (16:9 Sub E/W Corner Bottom) with ▲ or ▼ key. Adjust the data with + or – key for FD.
47. Select NO. A4 EUV (16:9 Sub V Lin Top) with ▲ or ▼ key. Adjust the data with + or – key for FD.
48. Select NO. A5 ELV (16:9 Sub V Lin Bottom) with ▲ or ▼ key. Adjust the data with + or – key for 03.
49. Select NO. AB VFL (Filter System AVt) with ▲ or ▼ key. Adjust the data with + or – key for 04.
50. Press the MENU key to turn off the Service Menu display.
— 4 —
SERVICE AD JUSTMENTS (Cont.)
— 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.)
No. TITLE
INITIAL REFERENCE INITIAL SETUP INITIAL SETUP
FUNCTION
DATA HEX DATA HEX DATA BINARY
3C SCO 0F 25* 00011011 Sub Color
3D STI 15 0C* 00001110 Sub Tint
3E SB 20 20 00100000 Sub Bright
3F SSH 08 05* 00000101 Sub Sharpness
40 AFC6HFR A5 BF* 10111111 AFC(6) Horizontal Frequency
41 VTR7HP 0C 12* 00001111 Vertical Trans(7) Horizontal Phase
42 VS 40 2F* 00111110 Vertical Size
43 VSP7VPO 2A 20* 00101111 Vertical Sync Separator(7) Vertical Position
44 CDM5UVL 06 0F* 00001011 Vetical Count Down Mode(5) Vertical Linearity Top
45 VC5LVL 9E 4A* 01001101 Vertical Compression(5) Vertical Linearity Bottom
46 VSC 14 0C* 00010010 Vertical S Correction
47 RB 00 00 00000000 Red Bias
48 GB 00 00 00000000 Green Bias
49 BB 00 00 00000000 Blue Bias
4A RD 38 3A* 00111010 Red Drive
4B HT5HTD4GD 37 37 00110111 Half Tone(6~5) Half Tone Defeat(4) Green Drive
4C BD 38 3A* 00111010 Blue Drive
4D SBI 30 1C* 00010111 Sub Bias
4E ↓↓↓↓Not Used
4F ↓↓↓↓Not Used
50 OSD 07 0A* 00001010 On Screen Display Contrast
51 CRG6 80 80 10000000 Coring
52 ↓↓↓↓Not Used
53 ↓↓↓↓Not Used
54 FLS 84 83* 10000011 Y/C Filter Mode
55 GRY7CRS5GYA3CKO 03 03 00000011 Gray(7) Cross B/W(6~5) G-Y Angle(4) Color Killer
56 FBP6YAP4WP 42 42 01000001 FBP Blanking(6) Y APF(4) White Peak
57 YGM6DCR4BSS2BSG A5 61* 01100001 Y Gamma(7~6) DC Reset(5~4) B Strk Start(3~2)B Strk Gain
58 AFC7CBP5 40 C0* 11000000 Auto Flesh(7) Color Band Pass Filter(5)
59 DIG6ABL5MSD4BAT 44 64* 01100100 OSD D/A(6) ABL Defeat(5) Mid Stop(4) ABL Threshold
5A RYA 0B 00* 00000000 R-Y/B-Y Angle
5B CBO4CRO 88 88 10001000 Cb DC Offset(7~4) Cr DC Offset
5C ↓↓↓↓Not Used
5D STS7RAD 20 20 00100000 S Trap Switch(7) RF AGC Delay
5E FMM7VIF4IAS 00 00 00000000 FM Mute(7) VIF System Switch(4) IF AGC
5F VL5BPF A0 80* 10000000 Video Level(7~5) S BPF Switch
60 EWD 28 2B* 00011000 E/W DC
61 EWA 17 24* 00010100 E/W Amp
62 EWT 1D 22* 00100001 E/W Tilt
63 EWB4EWP 88 BA* 10111001 E/W Corner Bottom(7~4) E/W Corner Top
64 EWC7HLV6HSC 03 02* 00000101 E/W Correction Sw(7) H Lock V Det(6) H Size Comp
65 BOW4ANG 78 86* 10011001 Bow Correction(7~4) Angle Correction
66 PRE6OVR4CTT C0 20* 00100000 Preshoot Adj(7~6) Overshoot Adj(5~4) Chroma Trap Test
67 HBL4HBR 38 2A* 00111010 H Blanking Left(7~4) H Blanking Right
68 SSP5VM 90 90 10010000 Sync Sep Sens(7~5) VM Gain
69 VBL4 00 00 00000000 V Size 0.75(7) V Blanking Select
6A YTH2YGA 00 0D* 00001101 Y TH(3~2) Y Gain
6B RWD6ROF4BWD2BOF 00 10* 00010000 R Width(7~6) R Offset(5~4) B Width(3~2) B Offset
80 ATT 07 07 00000111 Attenuation (MTS Input Level)
Table 1.ON-SCREEN SERVICE MENU (Continued)
— 6 —
SERVICE AD JUSTMENTS (Cont.)
No. TITLE
INITIAL REFERENCE INITIAL SETUP INITIAL SETUP
FUNCTION
DATA HEX DATA HEX DATA BINARY
81 WDB 20 20 00100000 Wide Band
82 SPC 20 20 00100000 Spectral
83 OPT 70 3C* 00111100 Aspect Ratio(5) Comb Filter(4) Clock(3) Scan Velocity(2)
84 OP2 52 2E* 00101110 V Guide(7) Tone(6) AV(5) PIP(4) F/V(3) I-Ch(2) C En(1) C En Sel
85 PUV 18 18 00011000 PIP Up Vertical Position
86 PDV 93 93 10010011 PIP Down Vertical Position
87 PLH 0A 0A 00001010 PIP Left Horizontal Position
88 PRH 65 65 01100101 PIP Right Horizontal Position
89 PCN 2A 2A 00101010 PIP Contrast
8A PBS 0F 0F 00001111 PIP BG Start
8B PCO 28 28 00101000 PIP Color
8C PTI 28 28 00101000 PIP Tint
8D HR 16 1C* 00011001 H Display Position
8E SBO 05 00* 00000000 Sub Bright Offset
8F DCN 00 00 00000000 YUV Sub Contrast
90 DBR 00 00 00000000 YUV Sub Bright
91 DCL 00 00 00000000 YUV Sub Color
92 DTN 00 FC* 11111100 YUV Sub Tint
93 DSP 00 00 00000000 YUV Sub Sharpness
94 DCG 00 00 00000000 YUV Sub Coring
95 DVM 00 00 00000000 YUV Sub VM
96 DCB 02 00* 00000000 YUV Cb Offset
97 DCR 02 00* 00000000 YUV Cr Offset
98 DHC 00 00 00000000 YUV Sub H Phase
99 DHS 00 00 00000000 YUV Sub E/W DC
9A ECN F4 FO* 11101001 16:9 Sub Contrast
9B EBR 00 FB* 11111011 16:9 Sub Bright
9C ECL 00 00 00000000 16:9 Sub Color
9D ETN 00 00 00000000 16:9 Sub Tint
9E EVS F9 F5* 11110111 16:9 Sub V Size
9F EVP 00 00 00000000 16:9 Sub V Position
A0 EEA F5 EF* 11111000 16:9 Sub E/W Amp
A1 EET FB FF* 00000010 16:9 Sub E/W Tilt
A2 EEP 00 FC* 11111111 16:9 Sub E/W Corner Top
A3 EEB FC FD* 00000000 16:9 Sub E/W Corner Bottom
A4 EUV FC FD* 11111110 16:9 Sub V Linearity Top
A5 ELV 00 03* 00000011 16:9 Sub V Linearity Bottom
A6 EWV 02 02 00000010 16:9 V Blanking Select
A7 SSN 02 02 00000010 Sync Separator Sense
A8 CDR 00 00 00000000 TV Count Down Mode
A9 AFR 00 00 00000000 AFC Loop Gain
AA B16 04 04 00000100 16:9 ABL VTH Sw
AB VFL 03 04* 00000100 Filter Sys (AV)
AC VCB 01 01 00000001 C Bypass (AV)
AD BWD 02 02 00000010 EWD AT AV Blue Back
AF 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
3C (00111100 binary). See page 4 INITIAL DATA SETUP,
step 32, 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
2E (00101110 binary). See page 4 INITIAL DATA SETUP,
step 33, for set up procedure. If this program code is wrong
the TV will not operate properly.
BIT FUNCTION
DATA
01
0 ~1 NOT USED — —
2 SCAN VELOCITY NONE YES
3 CLOCK NONE YES
4 COMB FILTER NONE YES
5 WIDE MODE NONE YES
6 SURROUND NONE YES
7 NOT USED — —
BIT FUNCTION
DATA
01
0
SHIPPING CONDITION
NORMAL COOL
OF COLOR ENHANCER
1 COLOR ENHANCER NONE YES
2 INITIAL CH & XDS NONE YES
3 FIXED/VARIABLE FIXED FIX/VAR
4 PIP NONE YES
5 AV INPUTS AV1/2 AV1/2/3
6 BASS & TREBLE / TONE BASS & TR TONE
7 V-GUIDE NONE
YES
Note 1.
Red/Blue Drive Adjustments in Service Menu NO. AF 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. 4A RD and 4C BD automatically.
1
2
3
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.
1
2
3
4 5 6
7 98
RD(–)
RD(+)
BD(–)
BD(+)
(N/A)
(N/A)
(N/A)
(N/A)
(N/A)
FOR RED DRIVE ADJUSTMENT
FOR BLUE DRIVE ADJUSTMENT
Note 2.
Red/Green/Blue Bias Adjustments in Service Menu
between AF and B0 (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. 47 RB,
No. 48 GB, and No. 49 BB automatically.
DRIVE AND BIAS ADJUSTMENTS
— 8 —
SERVICE AD JUSTMENTS (Continued)
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 VOL T AGE 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.
HORIZONT AL 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
(120V AC line).
4. While pressing the MENU key, reconnect the AC power
cord. The Service Menu display will now appear.
5. Select NO. 60 EWD (Horizontal Width) with ▲ or ▼ key.
6. Adjust the data with + or – key for proper width. To turn
off the Service Menu display, press the MENU key.
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. 41 VTR7HP (Horiz. 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.
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. 42 VS (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. Ch eck that picture is in the center of TV screen. If picture
center is too low, add resistor R513 (1K ohm 1W). If picture
center is too high, add resistor R512 (1K ohm 1/2W).
VCO AD JUSTMENT
Note: VCO must be adjusted after IC101 (Signal
Processor), IC802 (EEPROM) or T151 (VCO Coil) is
replaced.
1. Tune receiver to an active channel.
2. Set the picture controls to the Sports level.
3. Connect digital voltmeter + lead to pin 58 (TP 10) of IC101
and – lead to ground (TE 7).
4. Confirm a reading of 3.6 ± 0.2 VDC.
5. If voltage is out of specifications adjust T151 for
3.6 ± 0.2 VDC.
RF AGC ADJUS TMENT
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. 5D STS7RAD (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. Switch the generator to a white field (100 IRE).
3. Set the picture controls to the Sports levels.
4. Connect oscilloscope + lead to terminal TP16 (Q202
Emitter) and – lead to ground.
5. Turn off the receiver and disconnect the AC power cord
(AC 120V line).
6. While pressing the Menu key, reconnect the AC power
cord. The Service Menu will now appear.
7. Select NO. 5F VL5BPF (Video Level) with the ▲ or ▼ key.
8. Adjust the data with the 5 ~ 7 numeric keys for an oscilloscope reading of 1.0 ± 0.1 VP-P at TP16.
9 Press the MENU key to turn off the Service Menu display
and disconnect oscilloscope from chassis.
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.
Figure 4.
1.0 ± 0.1 VP-P
4A 125V
— 9 —
GRA Y SCALE ADJUS TMENT
1. Connect a color-bar generator to the antenna terminals.
2. Switch the generator to the white pattern.
3. Set the picture controls to the Sports level or Reset (use
MENU key and ▲ or ▼ key or RESET key).
4. Turn off the receiver and disconnect the AC power cord
(120V AC line).
5. While pressing the MENU key, reconnect the AC powercord. The Service Menu display will now appear.
6. Select NO. 4A RD (Red Drive) and NO. 4C BD (Blue Drive)
with ▲ or ▼ key and set each data to 3A with + or – key.
7. Select NO. 47 RB (Red Bias), NO. 48 GB (Green Bias) and
NO. 49 BB (Blue Bias) with ▲ or ▼ key and set each data
to 00 with + or – key.
8. Set NO. 3C SCO (Sub Color) data to 25, NO. 3D STI (Sub
Tint) data to 0C, NO. 3E SB (Sub Bright) data to 20, NO. 3F
SSH (Sub Sharpness) data to 05, and NO. 4B GD (Green
Drive) data to 37 with ▲ or ▼, and + or – keys.
9. Turn Screen Control (T402) to minimum (fully counterclockwise).
10. Select the Service Menu Bias Adjustments between AF
and B0 (No Vertical Sweep) with ▲ or ▼ key.
11. Advance Screen Control (T402) clockwise to obtain just
visible one color line. If line does not appear, place this
control to maximum (fully clockwise).
12. Raise each Bias Level with 3, 6, and 9 keys to obtain just
visible white line. See Figure 5.
13. Select the Service Menu NO. AF DRV (Drive Adjustments)
with ▲ or ▼ key.
14. 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.
15. Check for proper grayscale at all brightness levels.
Note: If Grayscale Adjustment is made after picture tube
replacement, check Brightness Level Adjustment.
BRIGHTNESS LEVEL ADJUSTMENT
Note: Grayscale Adjustment and High Voltage Check must be
completed 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 Sports level.
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 powercord. 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 680 mVDC.
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.
HIGH VOL T AGE HOLD-DOWN TEST
Every time the receiver is serviced, the HIGH VOLTAGE
HOLD-DOWN circuit must be tested for proper operation by
following these steps:
1. Connect receiver to 120V AC line. Tune receiver to active
channel. Reset the picture controls to the Sports level.
2. Check that the voltage measured between TP7 and TE7
(ground side) is within 16.5 VDC to 21 VDC. If the voltage
is out of this range, the Hold-Down Circuit must be checked.
3. Connect a DC Voltage supply to TP7 and TE7 through a
100 ohm 1/4W resistor. Adjust the DC voltage to 23 VDC.
The receiver should shutdown, losing raster and sound.
Then the receiver should turn off automatically. This
reaction indicates that the Hold-Down circuit is functioning properly. If the receiver does not shutdown, a
malfunction is indicated and its cause must be found and
corrected.
4. To obtain picture again, remove the DC Supply and wait
a few minutes. Now turn on the receiver.
HIGH VOL T AGE 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 31.1 KV and 35.6 KV. If
reading is not within range, check horizontal circuit.
No high-voltage adjustment is provided on this chassis.
1
2
3
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 5. Remote Control Number keys’ functions in
Bias Adjustment (No Vertical Sweep)
1
2
3
4 5 6
7 98
RD(–)
RD(+)
BD(–)
BD(+)
(N/A)
(N/A)
(N/A)
(N/A)
(N/A)
Figure 6. Remote Control Number keys’ functions in
Service Menu NO. AF DRV
FOR RED DRIVE ADJUSTMENT
FOR BLUE DRIVE ADJUSTMENT
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