Sanyo CE32FWH1F-C User manual

Service Manual
Colour Television
PRODUCT CODE:111352710
ORIGINAL VERSION: Chassis No. WB5-B
Part No. SKSM0425 C2MLL NOVEMBER 2000
Model No. CE32FWH1F-C
Service Ref. No. CE32WFH1F-C-00
Give complete “SERVICE REF. NO.” for parts
order or servicing, it is shown on the rating sheet
on the cabinet back of the TV set.
Note
This TV receiver will not work properly in foreign
countries where the television transmission system
and power source differ from the design
specifications. Refer to the specifications for the
design specifications.
CE32FWH1F-C
CONTENTS
Safety precautions/Specifications..........................................................................................................2
Block Diagrams..................................................................................................................................3 -6
Cabinet Disassembly ............................................................................................................................7
Adjustment and Repair Procedures................................................................................................8 - 13
Component Locations ..................................................................................................................14 - 15
CPU Functions..............................................................................................................................16 - 18
IC block diagrams ........................................................................................................................19 - 26
Pin description of semi-conductors......................................................................................................27
Parts description and reading of schematic diagram ..........................................................................28
Cabinet Parts List/TV Stand Parts List ................................................................................................29
Electrical Parts List ......................................................................................................................30 - 53

WB5-B chassis
1: An isolation transformer should be connected in the
power line between the receiver and the AC line
when a service is performed on the primary of the
converter transformer of the set.
2: Comply with all caution and safety-related notes
provided on the cabinet back, inside the cabinet, on
the chassis or 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
or shields, barriers, isolation resistor-capacitor
networks etc.Before returning any television to the
customer, the service technician must be sure that it
is completely safe to operate without danger of
electrical shock.
2
SAFETY PRECAUTION
X-RADIATION PRECAUTION
The primary source of X-RADIATION in the television receiver is the picture tube. The picture tube is specially
constructed to limit X-RADIATION emissions. For continued X-RADIATION protection, the replacement tube must
be the same type as the original including suffix letter. Excessive high voltage may produce potentially hazardous
X-RADIATION. To avoid such hazards, the high voltage must be maintained within specified limit. Refer to this
service manual, high voltage adjustment for specific high voltage limit. If high voltage exceeds specified limits,
take necessary corrective action. Carefully follow the instructions for +B1 volt power supply adjustment, and high
voltage adjustment to maintain the high voltage within the specified limits.
PRODUCT SAFETY NOTICE
Product safety should be considered when a component replacement is made in any area of a receiver.
Components indicated by mark the parts list and the schematic diagram designate components in which safety
can be of special significance. It is particularly recommended that only parts designated on the parts list in this
manual be used for component replacement designated by mark . No deviations from resistance wattage or
voltage ratings may be made for replacement items designated by mark .
Power source AC 220~240V 50Hz
Television system System B/G, I, L/L’, D/K.
Colour system PAL/SECAM/NTSC4.43 (PAL/NTSC4.43/NTSC3.58 in AV mode)
Channel coverage UHF: #21-#69
VHF: E2-E12, F2-F10, R1-R12
CATV: X, Y, Z, S1-S41, B~Q
Aerial input impedance 75ohm
AV terminal
21-pin terminals AV1: CENELEC Standard with RGB
AV2: CENELEC Standard with S-inputs
AV3: CENELEC Standard
Front AV terminals AV3: RCA Terminal, Video and Audio(L/R) Input
Sound output 12 x 2
Picture tube(inches) 32
Dimensions(WxHxD mm) 880 x 583.5 x 580.5
Weight 54.6Kg
SPECIFICATIONS
!
!
!

3
WB5-B chassis
This is a basic diagram for all models and therefore differs slightly from the actual block diagram.
ROM
47 46 45 4419
20
21
22 23
24
12/6
13/5
910
8 2
4
11
12/6 13/5
910
8
2
4
11
IC804
BUS SW
15 14
15
14
11
10
7
6 5
15
14 3
12
2
IC808
PCF8574
IC807
PCF8574
MUTE ON/OFF
3L-Y/C SEP ON/OFF
PAL/NTSC SW
AV3 SW AV2 SW AV1 SW
4
HOLD DOWN
4
POWER ERROR
I/O
EXPANDEDER
SCART1
AV1
SCART2
AV2
SCART3
AV3
FRONT
AV4
MONITOR-
OUT SC1 V-IN
23
41
1 7
9
11
27
34
37
39
19 20
8
9
6
7
SC2 V-IN
SC2Y-IN
SC2 C-IN
IC1201
<MM1313BD>
TV-OUT
R/G/B/BLK
IC1202
NJM2284
SCL/SDA
IF/VIDEO/
CHROMA/
MARTIX
2
3
36
37
38 39 34 18 20 21 47
61
60
51
50 49
29
28
26
46
CVBS-OUT
Y-OUT
C-OUT
CVBS-2-IN
R
G
B
BLK
IF
4
5
Aerial
Tuner X132
SAF
Q131
IC7101
<CXD2064>
3L-Y/C
SEP
VYC
26
28
30
22
20
171 72
74
76
79
IC7201
<TC90A36FM>
SCAN
CONVERTER
Y
U
V
HD
VD
IC101
<TDA9321>
6
8
911 1416
17
19
2Y-OUT
2U-OUT
2V-OUT
IC201
<TDA9178>
MATRIX
DEFLECTION
IC202
<TDA9330H>
28 27
26
23
24 844
46 41
42
38 37 36 35 3
10 11
SDA/SCL
SCL/SDA
IC801
<ST92R195>
CPU
RGBBLK
OSD
BGR
BLK
IC711
<TDA6101>
IC721
<TDA6101>
IC731
<TDA6101>
BVIDEO-OUT
GVIDEO-OUT
RVIDEO-OUT
358
358
358
G
B
RCRT
IC501
<LA7846>
12
H-DRIVE
E-W
Q402
T401A
H-DRIVE
IK
Q731
Q721
Q711
G
R
B
V DRIVE -
V DIRVE+
PCC
CONTROL
CS
CONTROL
H-OUTPUT
Q411
POWER ERROR
Q1803
Q1904
CS-SW
IC809
<CXA1315>
FOCUS SCREEM
T402
FLYBACK
V
H
D.Y
VERT
OUTPUT
653
VM CIRCUIT VM COIL
Q307
IC301
L302
Q301
Y U
V
VD
HD
AV SELECTOR
FRONT AV4/AV3 SW
IC803
FRONT AV-IN
SCL/SDA
IC806 BUS SW
SCL/SDA
Q801
Q803
Q804
Q802
I2C BUS
2V-OUT
2H-OUT
MEMORY
65
SCL/SDA SCL/SDA
Q366/
Q378
29
IC7202
<MSM518221>
FIELD
MEMORY
IC7203
<MSM518221>
FIELD
MEMORY
7
TV-OUT H.V
IC802
2
+
_
Depend on models
Outline
[Chassis Block Diagrams]
Fig.-1
CHASSIS DESCRIPTION

4WB5-B chassis
IC101
IF/VIDEO/
CHROMA
<TDA9321H>
IC351
MATRIX
<TDA9330H>
IC241
SHARPNESS
<TDA9178>
IC801
CPU
DIGITAL
SCAN
CONVERTER
CIRCUIT
AV
SELECTOR
CIRCUIT
SIF
Filtering
circuit
Buffer
2
3
10
12
13
14
18 20 21
34
36
|
38
61
60
23
40
41
42
38
30-38
24
49
50
51
6
8
9
19
17
16
26
27
28
Y, U, V 2(Y, U, V)
H-Sync
V-Sync
CVBS (TeleText)
2HD
2VD
External RGB in
(AV1 In)
SAW Filter
IF Stage
Video-in C-in Y-in
AV1
AV2
AV3
AV4
358
IC731
R-VIDEO OUT
<TDA6101Q>
358
IC721
G-VIDEO OUT
<TDA6101Q>
358
IC711
B-VIDEO OUT
<TDA6101Q>
R
G
B
IK
RGB OSD
DISPLAY from CPU
Picture Tube
Video signal rooting
SCART1
AV1
SCART2
AV2
SCART2
AV3
FRONT
AV4
11, 16
1, 14
5
6
L/R SC3-IN
IC1201
MM1313
22,24
42
40
2
4
8
10
25
26
33
32 L
SPEAKER
R
SPEAKER
HEADPHONE
JACK
Q001
IC807
PCF8574
IC3451
TDA9875
IC001
TA8200 AUDIO
AMP
711 12
24
12
14
15
MUTE
4
21
60
61
43
44
23
24 52
53
SCL/SDA
SCL/SDA
DIGITAL
TV SOUND
PROCESSOR
L/R
TV-OUT
MONITOR
OUT SC1-IN
SC2-IN
L/R IC1202
NJM2284
Q1215
Q1217
Q1223
Q1224
FROM
CPU
L/R
TV-IN
SIF
MONO
Tuner Q131
X131
SAF
Aerial
L
RL
R
L/R
L/R
5
63
44
IF/VIDEO/
CHROMA
63
64 5
IF/VIDEO/
CHROMA
+
I2CBUS
AV
SELECTOR
19
20
I/O
EXPAMDER
DIGITAL SOUND PROCESSOR
IC101
TDA9321 IF/VIDEO/
CHROMA
IC3101
AK7706VYM
DSP
IC3102
LC3564BM
Audio signal rooting
Fig.-2
Fig.-3
CHASSIS DESCRIPTION

5
WB5-B chassis
IC801
CPU
IC807
I/O Expander
IC802
ROM
CVBS input
Q1652
RL1601
Power
Supply
Circuit
OSD RGB Drive H-Sync V-Sync
1
|
5
63
|
80
61 60 48 49 44-47 42 42
25
12
11
10
7
6
5
4
4
14
15
RC Pre-amp.
IC804
Bus-SW. IC806 Bus-SW.
I2C Bus
SDA/SCL
I2C Bus
SDA/SCL-1
MEMORY
I2C Bus
SDA/SCL-2
SDA/SCL-3
19 20 21 22 23 24
AC RELAY
Q1671
RL1602
Degausing
Coild
DC RELAY
IC807
I/O Expander 3L-Y/C ON/OFF
HOLD DOWN
MUTE ON/OFF
PAL/NTSC SW
AV3 SW
AV2 SW
AV1 SW
POWER ERROR
SDA/SCL
SDA/SCL
DIGITAL
SCAN
CONVERTER
CS SW.
IC421
H-Drive
Q401-Q402 T401
Drive Trans
Q411
H-Output
IC501
V-Output <LA7846>
56 3
V-Drive +
V-Drive -
Q421/Q425
3
8
2
1
23
24
EW-Out
Q451 Q452
Vert.
Coil
Horiz.
Coil
Deflection
Yoke
T402
FlyBack Trans.
L461/L462
C421
Pcc Control
IC202
DEFLECTION
<TDA9330H>
2H-Sync
2V-Sync
Screen Width Control
Depend on models
System control
Deflection circuit
Fig.-4
Fig.-5
CHASSIS DESCRIPTION

6WB5-B chassis
IC7202
Video Memory
IC7203
Video Memory
IC7204
PLL
<READ>
IC7201
DOUBLE SCAN CONVERTER
<TC90A36FM>
IC7205
PLL
<WRITE>
LPF
Q7301-Q7304
LPF
Q7311-Q7314
LPF
Q7321-Q7324
LPF
Q7371-Q7374
LPF
Q7361-Q7364
LPF
Q7351-Q7354
IC7341
Inverter
VD
HD
2VD
2HD
Y
U
V
2V
2U
2Y
12
85
90
92
100
98
6
10
5
14
6
11
13
31
|
50
9
|
31
717068635953
9
4
5
4
Digital scan circuit
100Hz Digital Scan Converter circuit (available only 100Hz models)
100Hz converter circuit consists of the following ICs.
- TC90A36F, IC7201
Field Progressive Converter
- MSM518221A, IC7202, IC7203
Video Memory
- TLC2932I, IC7205
PLL (Phase Locked Loop)
- MC74HC04AFP, IC7341
invertor
The Y-signal output from IC101 is sent to pin 85 of IC7201<TC90A36F>, field progressive
converter, after controlling the amplitude level and band-pass limiting by the circuit consist of
Q7301, Q7302, Q7303, Q7304 and 8MHz LPF. The U/V-signal are also controlling the amplitude
level and band-pass limiting by the circuit consist of Q7311, Q7312, Q7313, Q7314, Q7321,
Q7322, Q7323, Q7324 and 4MHz LPF respectively. The U-signal is sent to pin 90 of IC7201and
the V-signal is sent to pin 92 of IC7201. The HD signal is sent to pin 63 of IC7201 with positive
polarity through IC7341 for shaping the waveform. The VD-signal is sent to pin68 of IC7201 with
negative polarity through IC7341.
The Y-signal input to IC7201 is converted from A to D in 8bit and output from pins 18 to 25 of
IC7201 to pins 1 to 4 and 24 to 27 of IC7203<MSM51822A>, video memory, for writing.
[Digital Scan Operation]
Fig.-6
CHASSIS DESCRIPTION

7
WB5-B chassis
100Hz Digital Scan Converter circuit (available only 100Hz models)
100Hz converter circuit consists of the following ICs.
- TC90A36F, IC7201
Field Progressive Converter
- MSM518221A, IC7202, IC7203
Video Memory
- TLC2932I, IC7205
PLL (Phase Locked Loop)
- MC74HC04AFP, IC7341
invertor
The Y-signal output from IC101 is sent to pin 85 of IC7201<TC90A36F>, field progressive
converter, after controlling the amplitude level and band-pass limiting by the circuit consist of
Q7301, Q7302, Q7303, Q7304 and 8MHz LPF. The U/V-signal are also controlling the amplitude
level and band-pass limiting by the circuit consist of Q7311, Q7312, Q7313, Q7314, Q7321,
Q7322, Q7323, Q7324 and 4MHz LPF respectively. The U-signal is sent to pin 90 of IC7201and
the V-signal is sent to pin 92 of IC7201. The HD signal is sent to pin 63 of IC7201 with positive
polarity through IC7341 for shaping the waveform. The VD-signal is sent to pin68 of IC7201 with
negative polarity through IC7341.
The Y-signal input to IC7201 is converted from A to D in 8bit and output from pins 18 to 25 of
IC7201 to pins 1 to 4 and 24 to 27 of IC7203<MSM51822A>, video memory, for writing.
The U/V-signals are converted in progressive at multiplexer and converted from A to D in 8 bit,
and then applied from pins 34 to 41 of IC7201 to pins 1 to 40 and 24 to 27 of IC7203
<MSM518221A>, video memory, for writing.
The signals are wrote down to memory IC by 16MHz clock. It means the number of sampling are
1024 per 1H. The clock signal for writing is obtained by performing the phase comparing AFC
control to the HD-signal. The phase comparing AFC control performs at IC7205<TLC2932I>, PLL,
and IC7201. The 32MHz clock signal generated here is supplied from pin 3 of IC7205 and sent to
pin 61 of IC7201. The clock signal divided to 16MHz in the IC is output to pin 31 and supplied to
pins 6 of IC7202 and IC7203.
The reading is performed by 32MHz clock supplied from pin 28 of IC7201. In this case, the
number of sampling is 2048 per 1H. This read clock signal is obtained by performing the
frequency comparing AFC control to the input HD-signal. To avoid the skew distortion, the phase
comparing AFC control is not employed. The frequency comparing AFC control is performed at
IC7204<TLC2932I>, PLL, and IC7201. The 32MHz clock signal generated here is output from pin
50Hz 100Hz
A
B
C
AA' BB' C
A' = A, B'= B
(a) Normal Scan (b) Double Scan
Fig.-7
CHASSIS DESCRIPTION

8WB5-B chassis
100Hz Digital Scan Converter circuit (available only 100Hz models)
100Hz converter circuit consists of the following ICs.
- TC90A36F, IC7201
Field Progressive Converter
- MSM518221A, IC7202, IC7203
Video Memory
- TLC2932I, IC7205
PLL (Phase Locked Loop)
- MC74HC04AFP, IC7341
invertor
The Y-signal output from IC101 is sent to pin 85 of IC7201<TC90A36F>, field progressive
converter, after controlling the amplitude level and band-pass limiting by the circuit consist of
Q7301, Q7302, Q7303, Q7304 and 8MHz LPF. The U/V-signal are also controlling the amplitude
level and band-pass limiting by the circuit consist of Q7311, Q7312, Q7313, Q7314, Q7321,
Q7322, Q7323, Q7324 and 4MHz LPF respectively. The U-signal is sent to pin 90 of IC7201and
the V-signal is sent to pin 92 of IC7201. The HD signal is sent to pin 63 of IC7201 with positive
polarity through IC7341 for shaping the waveform. The VD-signal is sent to pin68 of IC7201 with
negative polarity through IC7341.
The Y-signal input to IC7201 is converted from A to D in 8bit and output from pins 18 to 25 of
IC7201 to pins 1 to 4 and 24 to 27 of IC7203<MSM51822A>, video memory, for writing.
The U/V-signals are converted in progressive at multiplexer and converted from A to D in 8 bit,
B-Y9
Y0Y1Y2Y3Y4
1H
1024 sampling
sampling clock= 16MHz = 1024/1 horiz.
Y0Y1Y2Y3Y4
R-Y0
B-Y0B-Y1B-Y2B-Y3B-Y4
R-Y4
R-Y3
R-Y2
R-Y1R-Y0B-Y1R-Y2B-Y3R-Y4
Write
Time divided multiplex
Y0Y1Y2Y3Y4
R-Y0B-Y1R-Y2B-Y3R-Y4
Y5Y6Y7Y8Y9
B-Y5R-Y6B-Y7 R-Y8
R-Y0
B-Y1
R-Y2
B-Y3
R-Y4R-Y4
B-Y5
R-Y6
B-Y7
R-Y8R-Y0
B-Y1B-Y3
R-Y2
B-Y7
R-Y6
B-Y9
R-Y8
B-Y5B-Y9
1H
2048 sampling
2048 sampling
Double
Scan
Converting
sampling clock = 32MHz = 2048/1 horiz.
Read out in double clock
(a) Write (b) Read
(c)
Fig.-8
CHASSIS DESCRIPTION

9
WB5-B chassis
CONVERTER TRANS
IC6111
SWITCHING
54321
+
C605
Rectifier
D601
D613
AC SW601
MAINS SW T1651
RL160
RELAY
SW
RC14V
5V RC5V
IC1651 IC676
12V
D1659
D1658
D1651
D1653
Q611 Q621
R647
IC631
33V
140V
14V
-18V
7.5V
27V
D636
D635
D634 D631
D633
D632
D651
Q1652
IC674
5VTV
Vertical
Deflection
V.Def
200V
T402A
FLYBACK TRANS
T403
CHOKE TRANS
HighVoltage
FocusVoltage
ScreenVoltage
HOLD
DOWN
CRT
Heater
POWER ON/OFF
ON:HI
RELAY
IC807
I/O EXPANDER
414
15
414
15
IC807
I/O EXPANDER
Q1804
R1809
D1803 D1804
Q1803
5V
D649
D292 D294
5V
Q1806
R1816
HOLD DOWN
DETECTION
HIGH VOLTAGE &
POWER FAIL
DETECTION
D433
10
8
8
9
D437 D438
3
4
2
1
DAF
Q411
Q572
2
3
1
D646
D647
D638
D637
Q644
Q631
IC673
IC672 IC671
8VTV
9VTV
12VTV
D672
D677
POWER FAILURE
DETECTION
8V Reg
9V Reg
12V Reg
D679
5V Reg
12V Reg
D652 D653
D432 D436
22
21
20,19
18 13
12
17
1514
16
2 3
9,10
5,6
T611 CPU
IC801
42
23 24
I
2
C BUS
SCL/SDA
H-OUTPUT
140V Reg
60V
200V
D431
Video Out
D674
Power Supply Lines
Power Failuer Detection Lines
Power supply & Protection circuit
Fig.-9
CHASSIS DESCRIPTION

10 WB5-B chassis
DISASSEMBLY
CABINET BACK DISASSEMBLY
1. Remove 10 screws (A) and 3 screws (B)
2. Pull out the cabinet back backward.
AV1
AV2
AV3
ANALOGUE
ANT.75Ω
(A)
(A)
(A) (B)

11
WB5-B chassis
SERVICE ADJUSTMENTS
[FEATURE SETTING]
To enter to the Feature Setting Mode
+ Press and hold the “GREEN” button on the remote control and P▼button on the front control panel. The
adjustment window will appear on the screen.
+ Highlight the FEATURE memu by using the ▲or ▼button and then press the OK button. The window will
change to the feature setting window.
=>
To set the feature mode
+ Highlight the desired feature item by using the ▲or ▼button.
+ To change the feature mode, use the or button.
+ The data which is set in the feature mode is stored into the memory IC automatically.
Following table shows the available feature items and default setting. (The features of item DOLBY AUTO BAL
mode will not operate properly even if the mode can be selected.)
Exit from the Feature Setting Mode
+ Press the RECALL button on the remote control.
Feature items Mode Description & Note
ON-TIMER ON or OFF On-timer available, default “ON”
SORT MODE AUTO TUNE/SORT Tuning mode, default “ATS EURO +”
or AUTO TUNE
or ATS EURO PLUS
PLUG & PLAY ON or OFF Plug & Play mode,default “ON”
WELCOME TEXT ON or OFF Display message when first set up, default “ON”
CODE TEST OFF or ON For factory use, default “OFF”
WSS OFF or ON Wide Screen Signaling available , default “ON”
AUTO VOLUME ON or OFF Auto Volume function available, default “OFF”
DOLBY AUTO BAL OFF or ON Dolby Auto balance mode, default “OFF”
▲
▲
ON-TIMER ON
SORT MODE ATS EURO +
PLUG & PLAY ON
WELCOMETEXT ON
CODETEST OFF
WSS ON
AUTOVOLUME OFF
DOLBY AUTO BAL OFF
FEATURE
ADJUST : EXIT : RECALL
REGULAR
WIDE
OTHERS
FEATURE
TDA9320
TDA9330
TDA9178
TC90A36
ADJUST
OK
SELECT:
EXIT : RECALL
Ver 1.0
[After replacing the Menory IC (IC803)]
The memory IC, IC803, stores the feature setting data of TV set and service adjustments data for each circuit,
therefore, when the memory IC is replaced, it should be performed by following “FEATURE SETTING” and
“SERVICE ADJUSTMENT”.

12 WB5-B chassis
[SERVICE ADJUSTMENT]
To enter to the Service Mode
+ Press and hold the “GREEN” button on the remote control and P▼button on front control panel. The adjustment
window will appear on the screen.
To select the mode and service item and change data value
+ Highlight the desired adjustment mode (REGULAR or WIDE mode )by using the ▲or ▼button and then press
the OK button.
+ To select the adjustment item, use the ▲or ▼button.
+ To change the service data, use the or button button.
+ The data which is set in the service mode is stored into the memory IC automatically.
▲
▲
REGULAR
WIDE
OTHERS
FEATURE
TDA9320
TDA9330
TDA9178
ADJUST
OK
SELECT:
EXIT : RECALL
Ver 1.0
Note: Some items of the service adjustments for this chassis are controlled by the CPU, IC801, and the
adjustments are carried out by using the RC handset.
IMPORTANT NOTICE
Do not attempt to adjust service adjustments not listed on the above otherwise it may cause
loss of performance and product safety.
REGULAR
1VC1 38
Adjustment No.
and Item name Adjustment Data
WIDE
1.HSF 1F
Adjustment Item Adjustment Data
REGULAR mode WIDE mode
SERVICE ADJUSTMENTS

13
WB5-B chassis
ADJUSTABLE SERVICE ADJUSTMENT
IMPORTANT NOTICE
Do not attempt to change the data value of service items not listed below table otherwise it may cause loss of
performance and product safety. If you can not restore the data value of each service item, please initialize the
momory IC following to the below description “INITIALIZATION OF MEMORY IC” and re-adjust all of service
adjustments.
[REGULAR]
[WIDE]
Exit from the Service Mode
+ Press the RECALL button or turn off the TV set by using the Mains switch.
Item No. OSD Description
4 4.P V-WA Vertical Height Adjustment
6 6.P V-L Vertical Linearity Adjustment
8 8.P H-P Horizontal Centring Adjustment
9 9.P H-W Horizontal Width Adjustment
11 11.P-PCC PCC Adjustment
16 16.P-TRP PCC-Tilt Adjustment
Item No. OSD Description
1 1VC1 B/G VCO Adjustment
2 2VC2 France-L/L’ VCO Adjustment
3 3AGC AGC Adjustment
4 4SCR Screen Adjustment
5 5GRY White Balance Adjustment
6 6CUT Cut-Off Drive Adjustment <-- Not required this adjustment
7 7CTR Contrast Adjustment <-- Not required this adjustment
8 8OSD OSD Positioning Adjustment
[INITIALIZATION OF MEMORY IC]
To initialize the memory IC (IC803), press and hold the “NORMAL” button and then press the P▼button on the
front control panel, and then turn the Mains switch Off and On. Now the initialization is completed.
When initialized the memory IC, all of the setting data (feature setting data, option data and service adjustment
data) stored in the IC are reset to the default value. So it is necessary to set the feature setting, option setting and
readjust the service adjustments listed on left page.
SERVICE ADJUSTMENTS

14 WB5-B chassis
1. Apply 8.0Vdc to pin “C156 +” and GND.
2. Connect output probe to terminal “TUNER IF”.
3. Connect input probe to pin “Q131-C”.
4. Set the sweep attenator to 11dB.
5. By using T131, adjust "A" to be minimum amplitude.
PAL BG VCO ADJUSTMENT
1. Apply 38.9MHz signal to IF terminal on the tuner.
2. Enter to the service mode and select mode
“REGULAR”, item “REGULAR 1VC1”.
3. Press the or button to set data value to be
“10”.
L’ VCO ADJUSTMENT
1. Apply 34.3MHz signal to IF terminal on the tuner.
2. Enter to the service mode and select mode
“REGULAR”, item “REGULAR 2VC2”.
3. Press the or button to set data value to be
“10”.
1. Receive a colour bar pattern with 63dBuV/75Ω
terminated signal gain.
2. Connect digital voltmeter to TP-AGC and GND.
3. Enter to the service mode and select mode
“REGULAR”, item “REGULAR 3AGC”.
4. Press the or button to adjust voltage to be
3.2Vdc.
1. Receive a colour bar pattern.
2. Connect oscilloscope to terminal “TPVIDEO” and
GND.
3. Adjust amplitude “a” to be 2.0Vp-p by using VR181.
1. Receive a colour bar pattern.
2. Connect oscilloscope to terminal “TPYOUT” and GND.
3. Adjust amplitude “a” to be 1.0Vp-p by using VR7001.
1. Receive a colour bar pattern.
2. Connect oscilloscope to C7383 and GND.
3. Adjust amplitude “a” to be 1.0Vp-p by using VR7351.
By using FOCUS VR, adjust focus control for well defined
scanning lines.
FOCUS ADJUSTMENT
"a"
Y-OUT LEVEL ADJUSTMENT
"a"
VIDEO LEVEL ADJUSTMENT
▲
▲
RF-AGC ADJUSTMENT
▲
▲
▲
▲
IF VCO ADJUSTMENT
CH TRAP ADJUSTMENT
[ADJUSTMENTS]
How to adjust the each service data, Please see “SERVICE ADJUSTMENT on page 12 for Entering the Service
mode , Selecting service item and Adjusting the service data value.
IMPORTANT NOTICE
Do not attempt to adjust the following service adjustments except requiring the readjustments in servicing
otherwise it may cause loss of performance and product safety.
SERVICE ADJUSTMENTS
100Ω
0.002µF
75Ω1kΩ
a
b
10kΩ10KΩ1S188
0.002µF
1000pF 100KΩ330Ω
Output probe Input probe for CH trap alignment
Adjustment Tools
A
A = 40.4 MHz
SCAN Y LEVEL ADJUSTMENT

15
WB5-B chassis
SERVICE ADJUSTMENTS
SCREEN ADJUSTMENT
1. Select AV1 mode and no signal input.
2. Enter to the service mode and select mode
“REGULAR”, item “REGULAR 4SCR”.
3. Turn the SCREEN VR to set data value to “11”.
GREY SCALE ADJUSTMENT
4. Select item “REGULAR 5GRY”.
5. Adjust [R-Drive] and [B-Drive] control to obtain proper
white balance by using LEVEL+ or LEVEL - button.
a) Select [R-Drive] or [B-Drive] by using the P▲or
P▼button.
b) Adjust [R-Drive] or [B-Drive] by using the or
button.
1. Receive a circular pattern..
2. Connect a digital voltmeter to terminal of R652.
3. Set controls to normal.
4. Check the voltage reading is 150V ±1V dc.
VERTICAL CENTRING ADJUSTMENT
1. Receive a circular pattern..
2. Enter to the service mode and select mode “WIDE,
item “WIDE 2.P V-PS”.
3. Press the or buttonto adjust vertical centre.
VERTICAL HEIGHT ADJUSTMENT
1. Receive a circular pattern .
2. Enter to the service mode and select mode “WIDE”,
item “WIDE 4.P V-WA”.
3. Press the or button to adjust the vertical
height.
▲
▲
▲
▲
▲
HORIZONTAL CENTRING ADJUSTMENT
1. Receive a circular pattern .
2. Enter to the service mode and select mode “WIDE”,
item “WIDE 8.P H-P”.
3. Press the or button to adjust horizontal centre.
HORIZONTAL WIDTH ADJUSTMENT
1. Receive circular pattern.
2. Enter to the service mode and select mode “WIDE”,
item “WIDE 9. P H-W” (Coarse) / “WIDE 10 HAD” (Fine)
3. Press the or button to adjust the horizontal
width.
▲
▲
▲
▲
GREY SCALE ADJUSTMENT
▲
REGULAR
5GRY 22
22
[R-Drive]
[B-Drive]
Adjustable Range:
00 ~ 3F, 4F ~ 7F, 80 ~ BF, C0 ~ FF
+B VOLTAGE CHECK
VERTICAL ADJUSTMENT
HORIZONTAL ADJUSTMENT

16 WB5-B chassis
PCC ADJUSTMENT
1. Receive a cross-hatch pattern.
2. Enter to the service mode and select mode “WIDE”,
item “WIDE 11.P-PCC”.
3. Press the or button to adjust the vertical line
arround the left and right side edges of the screen to
be straight.
PCC-TILT ADJUSTMENT
4. Select item “WIDE 16.P-TRP”.
5. Press the or button to correct the tilt of vertical
lines.
SUB PCC ADJUSTMENT
1. Receive a cross-hatch pattern.
2. Adjust left and right vertical lines to be straight by
switching the housing socket “JWPH” to pins “LOW”,
“MID” or “HIGH”.
3. If the vertical lines can not be straight in step 2, use
VR2301 to make straight vertical lines.
RASTER SHIFT ADJUSTMENT
4. If the linearity of the right side screen becomes bad
due to the above adjustment, switch housing socket
“JWRS” to pin “RIGHT”. The right side linearity will be
improved by the raster shifting.
1. Receive a circular pattern.
2. Connect the high voltage meter to CRT anode and
GND.
3. Set controls to maximum.
4. Confirm high voltage to be 30.5 ± 1 KV.
1. Receive a circular pattern.
2. Enter to the service mode and select mode
“REGULAR”, and select item no. 8 “REGULAR 8
OSD”. The OSD test bar will appear on the top of
screen.
3. Press the or buttonto adjust proper OSD
positioning.
❚❚❚❚❚❚❚❚❚❚❚❚❚❚❚❚❚❚❚❚
▲
▲
OSD CENTRING ADJUSTMENT
HIGH-VOLTAGE CONFIRMATION
SUB PCC ADJUSTMENT
▲
▲
▲
▲
PCC ADJUSTMENT
VR2301 JWPH
JWRS
SERVICE ADJUSTMENTS
SUB PCC BOARD

17 C2MLL
WB5-B chassis
T132
TPYOUT
VR181
IC101
T131
VR7001
T7051
T7052
IC7101
TPAGC
TPVIDEO
VR1301
VR1302
VR7351
IC7201
IC7202
IC7203
IC802
IC805
IC3051
IC001
IC3451
IC3101 IC3102
COMPONENT LOCATIONS
●Main Board

18
C2MLL WB5-B chassis
T611
D601
IC611
●Power and Def. Board
COMPONENT LOCATIONS

19 C2MLL
WB5-B chassis
Pin No. Function Name Function IN/OUT
1 MMU0 OUT
2 MMU3 OUT
3 ADDR10 Address bus 10 OUT
4 DSN
5 ADDR11 Address bus 11 OUT
6 ADDR9 Address bus 9 OUT
7 ADDR8 Address bus 8 OUT
8 RWN
9 GND
10 VDD IN
11 OSC-IN Clock Input IN
12 OSC-OUT Clock Output OUT
13 ADDR13 Address bus 13 OUT
14 ADDR14 Address bus 14 OUT
15 MMU1 OUT
16 MMU2 OUT
17 MMU4 OUT
18 MMU5 OUT
19 P3.7/CSO IIC Switch (NVR SW) OUT
20 P3.6/ASN IIC Switch (IIC-3 SW) OUT
21 P3.5 IIC Switch (IIC-2 SW) OUT
22 P3.4 IIC Switch (IIC-1 SW) OUT
23 -- -- --
24 -- -- --
25 RC-IN Remote Control Signal Input IN
26 ASPECT-SO Aspect SO IN
27 AC CLK AC Clock in IN
28 SERVICE IN Service In/ Digit Key IN
29 ASPECT-SI Aspect SI IN
30 ASPECT CLK Aspect Clock OUT
31 DOLBY-SO Dolby-SO OUT
32 DOLBY-CLK Dolby-Clock OUT
33 Dolby-RQ Dolby-RQ OUT
34 VDD IN
35 GND
36 KEY IN Key Input TV Key IN
37 DATA-IN Digital Data In IN
38 DATA-CLK Digital Clock OUT
39 ENABLE Digital Data Enable OUT
40 DATA-OUT Digital Data Out OUT
41 DM POWER DM Power On/Off Power: L OUT
42 AC RELAY AC Relay Switch On/Off On: H OUT
43 DC POWER Degausing Coil switch OUT
44 FB BLK Output for OSD OUT
45 B Blue Output for OSD OUT
46 G Green Output for OSD OUT
47 R Red Output for OSD OUT
48 V-SYNC V-Sync Input IN
49 H-SYNC H-Sync Input IN
50 WSCR
51 WSCF
52 VDD-A IN
53 PXFM
54 RESET Reset Input IN
55 MCFM
56 JTRSTO
SYSTEM CONTROL PORT FUNCTIONS
●IC801 <CPU Port functions>

20
C2MLL WB5-B chassis
Pin No. Function Name Function IN/OUT
57 TXCF
58 CVBS0
59 TEST0
60 CVBS1
61 CVBS2
62 GND-A
63 DAT3 Data bus 3 IN
64 DAT4 Data bus 4 IN
65 DAT5 Data bus 5 IN
66 DAT6 Data bus 6 IN
67 DAT7 Data bus 7 IN
68 DAT2 Data bus 2 IN
69 DAT1 Data bus 1 IN
70 DAT0 Data bus 0 IN
71 ADDR0 Address bus 0 OUT
72 ADDR1 Address bus 1 OUT
73 ADDR2 Address bus 2 OUT
74 ADDR3 Address bus 3 OUT
75 ADDR4 Address bus 4 OUT
76 ADDR5 Address bus 5 OUT
77 ADDR6 Address bus 6 OUT
78 ADDR7 Address bus 7 OUT
79 ADDR12 Address bus 12 OUT
80 ADDR15 Address bus 15 OUT
Pin No. Function Name Function IN/OUT
1 A0 Chip Address IN
2 A1 Chip Address IN
3 A2 Chip Address IN
4 P0 TV ERROR INPUT Error: L IN
5 P1 SCART-1 Switch Active: H IN
6 P2 SCART-2 Switch Active: H IN
7 P3 SCART-3 Switch Active: H IN
8 GND
9 P4 H-Blanking On/Off Blank-On: H OUT
10 P5 PAL/NTSC Switch OUT
11 P6 3-Line Y/C Sep Switch OUT
12 P7 Front AV/ Scart-3 Switch Front AV: H OUT
13 VDAC Not used
14 SCL IIC Bus SCL IN
15 SDA IIC Bus SDA IN/OUT
16 VDD Power Supply 5V IN
●IC808 <I/O Expander-1 Port functions>