Sanyo CE32WH3-F User manual

Service Manual CE32WH3-F
ColourTelevision
Model CE32WH3-F
Service Ref. No. CE32WH3-F-01
PRODUCT CODE: 111340310
ORIGINAL VERSION: Chassis Series: WB5
Give complete “SERVIC EREF. NO.” for parts order or
servicing. It is shown on the rating plate at the cabinet
back of the unit.
Note
This TV receiver will not work properly in foreign
countries where the television transmission
system and power source differ from the design
specification. Refer to the specifications for the
design specifications.
Contents
Safety precautions/Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2
Block diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-5
Digital scan operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. . . . . . . . .6-8
Power supply &protection diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. . . . .9
Disassembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .10
Option setting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. . . . . . . . . . . .11
Service adjustments . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .12-15
CPU port functions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. . . . . . .16-18
IC block diagrams . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .19-27
Waveforms . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .28-31
Pin description of semi-conductors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. . . . .32
Parts description and reading in schematic diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .33
Cabinet parts List/T VStand parts list . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .34-36
Chassis electrical parts lists . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. . . . . .37-60
Part No. SKSM0325 F7YLVSEPT 1999

F7YLV
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
SPECIFICATIONS
Product safety should be considered when a component replacement is made in any area of a receiver.
Components indicated by mark in 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, D/K, I, L/L’
Colour system PAL/SECAM/NTSC4.43 on air
NTSC3.58 in AV mode
Channel coverage VHF: E2-E12, A-H, H1, H2, F2-F10, R1-R12
UHF: 21-69, F21-F69
CATV: X, Y, Z, Z+1, Z+2, 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 Main L/R 10.0 x 2
(Continuous)(watts)
Picture tubes(inches) 32
Dimensions(WxHxD mm) 876 x 584 x 556
Weight (kg) 50kg

-3- F7YLV
This is a 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 MC14066
BUS SW
15 14
15
14
11
10
7
6 5
15
14 4
1
12
11
10
2
IC808
PCF8574
IC807
PCF8574
MUTE ON/OFF
AV3/FRONT AV4 SW
3D SURROUND ON/OFF
3L-Y/C SEP ON/OFF
PAL/NTSC SW AV3 SW AV2 SW AV1 SW
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
SC2 Y-IN
SC2 C-IN
IC1201
MM1313BD
TV-OUT
R/G/B/BLK
IC1181
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
A/D D/A
CONVERTER
Y
U
V
HD
VD
SCAN
CONVERTER
IC7250
SAA4991
IC101
TDA9321
FIELD
MEMORY
IC7206
SAA4955
FIELD
MEMORY
6
8
911 1416
17
19
2Y-OUT
2U-OUT
2V-OUT
IC201
TDA9178
Q7341
Q7305
Q7309 MATRIX
DEFLECTION
IC202
TDA9330
28 27
26
23
24 844
46 41
42
38 37 36 35 3
10 11
SDA/SCL
SCL/SDA
IC801
ST9212915
CPU
RGBBLK
OSD
BGR
BLK
IC711
TDA6111
IC721
TDA6111
IC7311
TDA6111
B VIDEO-OUT
G VIDEO-OUT
R VIDEO-OUT
358
358
358
G
B
RCRT
IC501
LA7846
12
H-DRIVE
E-W
Q402
T401A
H-DRIVE
IC471
MB3759
IK
Q237
Q236
Q235
G
R
B
V DRIVE -
V DIRVE+
15 8
PCC
CONTROL
CS
CONTROL
H-OUTPUT
Q411
POWER ERROR
Q1803
Q1904
CS-SW
IC809
CXA1315
Q473
140V
FOCUS SCREEM
T402
CHOKE TRANS
T402
FLYBACK
65V
HEATER
200V
V
H
D.Y
VERT
OUTPUT
653
VM CIRCUIT VM COIL
Q307
IC301
L302
Q301
Y U
V
VD
HD
AV SELECTOR
FRONTAV4/AV3 SW
IC803
FRONTAV-IN
SCL/SDA
IC806 MC14066 BUS SW
SCL/SDA
Q801
Q803
Q804
Q802
I2C BUS
2V-OUT
2H-OUT
MEMORY
65
SCL/SDA SCL/SDA
Q366/
Q378
297
TV-OUT
IC7207
SAA4955
H.V
IC802
M27C1001
2
+
_
Outline
CHASSIS BLOCK DIAGRAMS
Fig.-1

-4-
F7YLV
IC101
IF/VIDEO/
CHROMA
<TDA9321H>
IC202
CTI
<TDA9330H>
IC201
SHARPNESS
<TDA9178>
DIGITAL
SCAN
CONVERTER
CIRCUIT
3LY/C SEP.
AV
SELECTOR
CIRCUIT
SIF
Filtering
circuit
Buffer
2
3
10
12
13
14
18
20 21 26 28 29
34
36
|
38
61
60
23
40
41
42
38
35
24
49
50
51
6
8
9
19
17
16
26
27
28
Y, U, V 2(Y, U, V)
H-Sync
V-Sync
2HD
2VD
External RGB in
SAW Filter
IF Stage
Video-in C-in
C-in
Y-in
Y-in
Y-out
AV1
AV2
AV3
AV4
358
IC731
R-VIDEO OUT
<TDA6111Q>
358
IC721
G-VIDEO OUT
<TDA6111Q>
358
IC711
B-VIDEO OUT
<TDA6111Q>
R
G
B
IK
RGB OSD
DISPLAY from CPU
Picture Tube
Video signal routeing
SCART1
AV1
SCART2
AV2
SCART2
AV3
FRONT
AV4
1,4
16,11
3
5
L/R SC3-IN
IC1201
MM1313
22,24
42
40
2
4
8
10
25
26
33
32
IC3501
MM1369 3D
SURROUND
PROCESSOR
3D SUPPER
L
SPEAKER
R
SPEAKER
HEADPHONE
JACK
Q001
IC807
PCF8574
IC3451
TDA9875
Q3453
Q3452
L
R
23
1
10
9
13
11
6
48
47
20
9
33
34
IC002
TA8200 AUDIO
AMP
711 12
24
12
14
15
MUTE
12
29
51
52
32
31 60
61
IC101
TDA9321
SCL/SDA
SCL/SDA
NICAM&
SOUND
CONTROLLER
L/R
TV-OUT
MONITOR
OUT SC1-IN
SC2-IN
L/R IC1181
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
44 5
IF/VIDEO/
CHROMA
+
I2CBUS
AV
SELECTOR
19
20
I/O
EXPANDER
ACTIVE 3D SURROUND PROCESSING
Audio signal routeing
Fig.-2
Fig.-3

-5- F7YLV
IC801
CPU
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
38
25
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
Photo
Sensor
Power ON/OFF
DIGITAL
SCAN
CONVERTER
CS SW.
IC421
H-Drive
Q401-Q402 T401
Drive Trans
Q411
H-Output
IC501
V-Output <LA786>
56 3
V-Drive +
V-Drive -
Q421
3
8
2
1
23
24
EW-Out
3
15 8
11
IC471
<MB3759P>
Q472 Q473
Vert.
Coil
Horiz.
Coil
Deflection
Yoke
T402
FlyBack Trans.
T403
Choke
Trans.
L461/L462
C421
Pcc Control
IC202
DEFLECTION
<TDA9330H>
2H-Sync
2V-Sync
Screen Width Control
Y.U.V
H-SYNC
V-SYNC
System control
Deflection circuit
Fig.-4
Fig.-5

-6-
F7YLV
Y
U
V
HD
VD
IC7207
FIELD
MEMORY-1
IC7206
FIELD
MEMORY-2
IC7205
SCAN
CONVERTER
<SAA4991WP>
IC7201
A/D, D/A
TIMING
CONTROLLER
<SAA4977H>
PLL VCO
Y/U/V
SWC
SWCK SRCK
SRCK
LLD
2Y_out
2U_out
2V_out
2HD_out
2VD_out
IC7208 IC7203 IC7202,IC7204
26
28
30
22
20
79
76
74
71
70 72
15 26 62 26
Digital scan circuit
100Hz Digital Scan Converter circuit
100Hz converter circuit consists of the following ICs.
- SAA4977H
A/D, D/A, Timing generator
- SAA4991WP
100Hz converting processor
- SAA4955TJ x2
1.9Mbit field memory
-MC74HC4046AF
PLL(Phase Locked Loop)
The Y/U/V signals decoded in the HOP IC (IC101) are sent to the scan converter circuit. The
Y/U/V signals are sent to SAA4977H through the AC coupling capacitors and converted to 8bit
digital data with 16MHz sampling clock at the A/D converting stage in the IC respectively.
SAA4977H has built-in L.P.F. and the input stage for A/D conversion, so no external L.P.F. are
required. The digitalised U/V signals are compressed with 1 by 4 at SAA4977H and sent to the
field memory IC, SAA4955T as the 8bit Y-signal and 4bit C-signal data stream. Two fields picture
information are always maintained by two field memory IC, SAA4955TJ.
SAA4991WP creates a 100Hz converted field picture information to display next field from these 2
field picture information, and sends this to SAA4977H. There are two ways to create a new field
picture information, the one is creating the compensation data by detecting the motion image in
DIGITAL SCAN OPERATION
Fig.-7

-7- F7YLV
the fields and other one is simply reading out field data twice with double scanning frequency. In
the SAA4977H, the converted 8bit Y-signal is added sharpness processing and the converted 8bit
U/V-signals are added the CTI processing. The processed signals which become 10 bit digital
signals are demodulated to analogue Y/U/V signals by the10 bit D/A converter with 32MHz clock
rate (the double of input A/D sampling).
The Y/U/V signals up-converted to 100Hz are eliminated the clock components at external 12MHz
LPF, and output from the scan converter circuit after adjusting the gain amplitude for sharpness
IC, TDA9178, at the next stage. Also 100Hz H-sync and V-sync signals are supplied to the
deflection circuit.
The clock used for system control is line lock clock. The H/V signals which is synchronised with
Y/U/V signals are sent to the scan converter for timing control. The PLL/VCO circuits generate a
system clock 32MHz by referring to its 15.7kHz H-signal. The PLL, MC74HC4046AF, phase
compares the H-signal getting waveform-shaped at TC7S32F and the signal getting divided
32MHz clock by 1024 and controls VCO circuit at the next stage to synchronise the phase. After
waveform-shaping at TC7SU04F and TC7SH00F, its clock signal are supplied to each ICs as the
32MHz system clock.
The making of display information with 100Hz scan conversion is performed by the following
format.
1) Digital scan
odd field even field odd field even field odd field
Signal A B C D E
100Hz scan field * o e o e o e o e o e
Display field A+b a+B B+c b+C C+d c+D D+e d+E E+f e+F
* e = even, o = odd field
The display field picture information on the digital scan is made by analysing the 2 fields previous
data stored in the field memory. The digital scan analyses the picture information on the same
peripheral area of the pixel between the fields and detects the motion vector, and creates a new
field picture information according to its motion.
The small and capital letter show which field data is emphasised when making the field data. The
capital letter shows emphasised field data.
50Hz 100Hz
A
B
C
AABBC
A' = A, B'= B
(a) Normal Scan (b) Normal Double Scan
100Hz
A+ba+B B+cb+C c+D
(C) Digital Double Scan
Fig.-8

-8-
F7YLV
2) 100Hz Normal scan
odd field even field odd field even field odd field
Signal A B C D E
100Hz scan field o e o e o e o e o e
Display field A A B B C C D D E E
* e = even, o = odd field
The display field picture information on the normal scan is made simply by reading out each field
data stored in the field memory with double scanning frequency repeatedly.
SAA4977H and SAA4991WP are controlled via IIC bus. The CPU of the TV sends the control
data to SAA4977H to control the display mode. The equipped micro-computer in SAA4977H
receives external commands via IIC bus and controls SAA4991WP to change the operation
through the SNERT-bus.
The system clock is 32MHz, f=fH x 1024 x 2
NTSC : 32.223776MHz
PAL : 32.000000MHz
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-Y1
(R-Y 0)'
(B-Y0)'
Write
Time divided multiplex
Y0Y1Y2Y3Y4
(R-Y0)' (B-Y0)' (R-Y4)' (B-Y4)' (R-Y8)'
Y5Y6Y7Y8Y9
R-Y0
B-Y0
R-Y2
B-Y2
R-Y4R-Y5
B-Y4
R-Y7
B-Y7
R-Y9R-Y1
B-Y1B-Y3
R-Y3
B-Y6
R-Y6
B-Y8
R-Y8
B-Y5B-Y9
1H
1024 sampling
1024 sampling
Double
Scan
Converting
sampling clock=32MHz=2048/1 horiz.
Read out in double clock
(a) (b)
(c)
Y
R-Y
B-Y
Y
R-Y
B-Y
Fig.-9

-9- F7YLV
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
IC7351
IC7352
IC7353
IC674
5V
D5V
A5V
D3.3V
A3.3V
5VTV
Vertical
Deflection
V.Def
200V
T402
FLYBACK TRANS
T403
CHOKE TRANS
HighVoltage
FocusVoltage
ScreenVoltage
65V
CRT
Heater
POWER ON/OFF
ON:HI
RELAY
IC808
I/O EXPANDER
414
15
414
15
IC809
I/O EXPANDER
Q1804
R1809
D1803 D1804
Q1803
5V
D811
D292 D294
5V
Q1806
R1816
HIGH VOLTAGE &
POWER FAIL
DETECTION
HIGH VOLTAGE &
POWER FAIL
DETECTION
D485
10
9
8
11
D481
1
3
4
1
2
D486
Video Out
Q411
Q572
2
3
1
D646
D649
D647
D638
D637
Q632
Q631
IC673
IC672 IC671
8VTV
9VTV
12VTV
D672
D677
POWER FAILURE
DETECTION
8V Reg
9V Reg
12V Reg
D679
D7353
D828
D7351
D7352
D7354
5V Reg
3.3V Reg
5V Reg
5V Reg
12V Reg
D642 D643
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
14V Reg
Power Supply Lines
Power Failuer Detection Lines
Power supply & Protection circuit
Fig.-5
POWER SUPPLY & PROTECTION DIAGRAMS

-10-
F7YLV
DISASSEMBLY
CABINET BACK DISASSEMBLY
1. Remove 10 screws(A) and 2 screws(B)
2. Pull out the cabinet back.
AV1
AV2
AV3
ANALOGUE
ANT.75Ω
(A)
(A)
(A)
(B)

-11- F7YLV
OPTION SETTING
[After replacing the Memory IC (IC803)]
The memory IC, IC803, stores the option data of TV set and service adjustments data for each circuit, therefore,
when the memory IC is replaced, it should be programmed with the following setting and “SERVICE ADJUSTMENT”
on next page.
To enter to the Option Mode
+ Press and hold the “RECALL”button on the remote control and “PROG.+” button on the front panel of the TV. The
option window will appear on the screen.
To set the option mode
+ Highlight the desired option item by using the UP or DOWNbutton .
+ To switch the option mode, use the Volume - (LEFT) or Volume + (RIGHT) button.
+ The data which is set in the option mode is stored into the memory IC automatically.
Following table shows the available option items and default setting mode.
Exit from the Service Mode
+ Press the RECALL button.
Option Mode Mode Note
ON-TIMER ON or OFF Default “ON”
SORT MODE ATS EURO PLUS Depends upon destination
or AUTO TUNE
or AUTO TUNE/SORT
PLUG & PLAY ON or OFF 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 ON or OFF Wide Screen Signaling available, default “ON”
ON-TIMER ON
SORT MODE ATS EURO PLUS
PLUG & PLAY ON
WELCOMETEXT ON
CODETEST OFF
WSS ON
OPTION
ADJUST : EXIT : RECALL

-12-
F7YLV
[After replacing the Memory IC (IC803)]
The memory IC, IC803, stores the service adjustments data for each circuit, therefore, when the memory IC is
replaced, it should be programmed with “OPTION SETTING” on previous page and the following adjustments, refer
to futher adjustment on page 14.
ADJUSTABLE SERVICE ADJUSTMENT
REGULAR
WIDE
To enter to the Service Mode
+ Press and hold the “RECALL” button on the remote control and then press the “SERVICE switch”inside of the
door. The adjustment window will appear on the screen.
REGULAR
WIDE
OTHERS
TDA9320
TDA9330
TDA9178
TDA4977
ADJUST
OK
SELECT:
EXIT : RECALL
IMPOTANT NOTICE
Do not attempt to adjust service adjustments not listed on the above otherwise it may cause
loss of performance and product safety.
Item No. OSD Description
4 P V-WA Vertical Size Adjustment
6 P V-L Vertical Centre Adjustment
8 P H-P Horizontal Centre Adjustment
9 P H-W Horizontal Size Adjustment
11 P PCC Pcc Adjustment
16 P TRP Trapezoid Distortion Adjustment
Item No. OSD Description
1 VC1 B/G VCO Adjustment
2 VC2 France-L/L’ VCO Adjustment
3 AGC AGC Adjustment
4 SCR Screen Adjustment
5 GRY White Balance Adjustment
6 CUT Cut-Off Drive Adjustment
7 CTR Contrast Adjustment
8 OSD OSD Positioning Adjustment
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.
SERVICE ADJUSTMENTS

To select the mode and service item and change data value
+ Highlight the desired adjustment mode by using the UP or DOWN button and then press the OK button.
+ To select the adjustment item, use the UP or DOWN button.
+ To change the service data, use the Volume -(LEFT) or Volume + (RIGHT) button.
+ The data which is set in the service mode is stored into the memory IC automatically.
Exit from the Service Mode
+ Press the RECALL button or turn off the TV set by using the Mains switch.
-13- F7YLV
STATUS 10
REGULAR NG
1VC1 38
Adjustment Item Adjustment Data
Status
WIDE
1.PV-P 1F
Adjustment Item Adjustment Data
REGULAR mode WIDE mode
INITIALIZATION OF MEMORY IC
When the memory IC (IC803) is replaced with a new blank IC the default settings will be automatically down loaded
at switch on.
When initialized the memory IC, all of the 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 option settings and readjust the service adjustments listed on
left page.

-14-
F7YLV
1. Receive white raster pattern.
2. Set controls to maximum and set the screen mode to
“WIDE”.
3. Connect digital voltmeter to D632-C and GND.
4. Confirm that voltage is 140±1Vdc.
PAL BG VCO ADJUSTMENT
1. Apply 38.9MHz signal to IF terminal on the tuner.
2. Set system mode to “S-1”.
3. Enter to the service mode and select mode
“REGULAR”, item “REGULAR 1VC1”.
4. Press the volume + or - key to set data value to be
“10”.
SECAM L/L’ VCO ADJUSTMENT
1. Apply 34.3MHz signal to IF terminal on the tuner.
2. Set system mode to “S-4”.
3. Enter to the service mode and select mode
“REGULAR”, item “REGULAR 2VC2”.
4. Press the volume + or - key to set data value to be
“10”.
1. Receive colour bar pattern with 63dBuV/75Ω
terminated signal gain.
2. Connect digital voltmeter to TP-AGC and GND.
3. Set system mode to “S-1”.
4. Enter to the service mode and select mode
“REGULAR”, item “REGULAR 3AGC”.
5. Press the volume + or - key to adjust voltage to be
3.2Vdc.
1. Receive colour bar pattern.
2. Connect oscilloscope to C155 (R175 side) and GND.
3. Adjust amplitude “a” to be 1.0Vp-p by using VR181.
1. Receive colour bar pattern.
2. Connect oscilloscope to C7064 and GND.
3. Set controls to maximum.
3. Adjust amplitude “a” to be 1.0±0.05Vp-p by using
VR7001.
1. Receive colour bar pattern and set controls to
maximum.
2. Connect oscilloscope to test point “TP-1” on the Scan
converter board.
3. Adjust voltage to be 2.7±0.2Vdc by using T7201.
SCAN PLL ADJUSTMENT
"a"
Y-OUT LEVEL ADJUSTMENT
"a"
VIDEO LEVEL ADJUSTMENT
RF-AGC ADJUSTMENT
IF VCO ADJUSTMENT
POWER SUPPLY CONFIRMATION
ADJUSTMENTS
IMPOTANT 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.

-15- F7YLV
By using FOCUS VR, adjust focus control to obtain
sharpest picture.
SCREEN ADJUSTMENT
1. Select AV1 mode with 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 be “11”.
GREY SCALE ADJUSTMENT
1. Receive white raster pattern.
2. Enter to the service mode and select mode
“REGULAR”, item “REGULAR 5SRY”.
3. Select data value by using program up or down key,
and press the volume + or - key to obtain the proper
white balance.
1. Receive circular pattern and set screen mode to
“FULL” with R/C wide button.
2. Enter to the service mode and select mode
“REGULAR”, item “REGULAR 8OSD”. The OSD test
bar will appear on the top of screen.
3. Press the volume + or - key to adjust the proper OSD
positioning.
VERTICAL CENTRING ADJUSTMENT
1. Receive circular pattern and set screen mode to
“FULL” with R/C wide button.
2. Enter to the service mode and select mode “WIDE”,
item “WIDE 6.P V-L”.
3. Press the volume + or - key to adjust vertical centre.
VERTICAL HEIGHT ADJUSTMENT
1. Receive circular pattern and set screen mode to
“FULL” with R/C wide button.
2. Enter to the service mode and select mode “WIDE”,
item “WIDE 4.P V-WA.
3. Press the volume + or - key to adjust proper vertical
height.
HORIZONTAL CENTRING ADJUSTMENT
1. Receive circular pattern and set screen mode to
“FULL”.
2. Enter to the service mode and select mode “WIDE”,
item “WIDE 8.P H-P”.
3. Press the volume + or - key to adjust horizontal centre.
HORIZONTAL WIDTH ADJUSTMENT
1. Receive circular pattern and set screen mode to
“FULL” with R/C wide button.
2. Enter to the service mode and select mode “WIDE”,
item “WIDE 9.P H-W”.
3. Press the volume + or - key to adjust horizontal centre.
PCC-1 ADJUSTMENT(LINEARITY)
1. Receive cross hatch pattern and set screen mode to
“FULL” with R/C wide button.
2. Enter to the service mode and select mode “WIDE”,
item “WIDE 11.P PCC”.
3. Press the volume + or - key to adjust vertical linearity.
PCC-2 ADJUSTMENT(TILT)
1. Receive circular pattern and set screen mode to
“FULL” with R/C wide button.
2. Enter to the service mode and select mode “WIDE”,
item “WIDE 16.P-TRP”.
3. Press the volume + or - key to adjust the tilting of
vertical lines.
1. Receive circular pattern and set screen mode to
“FULL” with R/C wide button.
2. Connect high-voltage meter to the anode of CRT and
GND.
3. Confirm that voltage is 30.5±1.0kV for 32” model.
HIGH-VOLTAGE CONFIRMATION
PCC ADJUSTMENT
HORIZONTAL ADJUSTMENT
VERTICAL ADJUSTMENT
OSD CENTRING ADJUSTMENT
GREY SCALE ADJUSTMENT
FOCUS ADJUSTMENT

-16-
F7YLV
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 CSO IIC Switch OUT
20 ASN IIC Switch (IIC-3) OUT
21 IIC Switch (IIC-2) OUT
22 IIC Switch (IIC-1) OUT
23 INT1 IIC SDA-1 IN/OUT
24 INT2 IIC SCL-1 OUT
25 INT7 Remote Control Signal Input IN
26 INT6 Service Switch Input On: L IN
27 NMI External Bus Switch Output ACK: L OUT
28 AIN4 ASPECT S0 OUT
29 ASPECT SI IN
30 ASPECT CLK OUT
31 PWM7 Digital Data Input IN
32 PWN6 Digital Data Clock OUT
33 PWN5 Digital Data Enable OUT
34 VDD IN
35 GND
36 INT5 Key Input Digital Key IN
37 INT0 Key Input TV Key IN
38 INT4 Sensor Input IN
39 PWM4 Digital Data Output OUT
40 PWM3 NIM Power On/Off Power on : L OUT
41 PWM2 DM power On/Off Power on : L OUT
42 PWM1 AC Relay Switch Relay on : H OUT
43 PWM0 DM Test/Scan reset 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
CPU PORT FUNCTIONS

-17- F7YLV
Pin No. Function Name Function IN/OUT
51 WSCF
52 VDD-A IN
53 PXFM
54 RESET Reset Input IN
55 MCFM
56 JTRSTO
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

-18-
F7YLV
Pin No. Function Name Function Action IN/OUT
1 SW1 Power failuer detection Input IN
2 SW0 Front AV Switch “H” Front AV “L” AV3 IN
3 DAC4 50/60hz Switch “H” 50Hz “L” 60Hz OUT
4 DAC3 CS Switch “H” Normal/Natural Wide OUT
5 DAC2 H-Size Control OUT
6 DAC1 Naormal Switch “H” Normal OUT
7 DAC0 Auto-Wide Level OUT
8 VSS
9 SW2 VM Switch “H”: on “L”: off OUT
10 SW3 --
11 A0 Chip address OUT
12 A1 Chip Address OUT
13 A2 Chip Address OUT
14 SDA IIC Bus SDA IN/OUT
15 SCL IIC Bus CLK IN
16 VDD Power Supply 9V IN
I/O Expander 1 (IC809)Pin Function Table (CXA1315)
Pin No. Function Name Function Action IN/OUT
1 A0 Chip Address IN
2 A1 Chip address IN
3 A2 Chip Address IN
4 P0 Sound Mute “H” Mute on OUT
5 P1 Scart AV1 Switch “H” Active IN
6 P2 Scart AV2 Switch “H” Active IN
7 P3 Scart AV3 Switch “H” Active IN
8 VSS
9 P4 On-timer LED Drive “H” On OUT
10 P5 PAL/NTSC Switch OUT
11 P6 3 Line Y/C Switch OUT
12 P7 Bypass Switch OUT
13 VDAC Not used
14 SCL IIC Bus SCL IN
15 SDA IIC Bus SDA IN/OUT
16 VDD Power Supply 5V IN
I/O Expander 2 (IC808) Pin Function Table (PCF8574)
Pin No. Function Name Function Action IN/OUT
1 A0 Chip Address IN
2 A1 Chip address IN
3 A2 Chip Address IN
4 P0 Digital Power Error IN
5 P1 DM-NIM power Error IN
6 P2 Hold Down “H” on IN
7 P3 H-Blanking on/off “H” Blanking on IN
8 VSS
9 P4 DSP Reset “L” Reset OUT
10 P5 3D Super Switch “L” Super OUT
11 P6 Front/Scart3 Switch “H” Front AV OUT
12 P7 Power On/Mute Out “H” Power on OUT
13 VDAC Not used
14 SCL IIC Bus SCL IN
15 SDA IIC Bus SDA IN/OUT
16 VDD Power Supply 5V IN
I/O Expander 3 (IC807) Pin Function Table ( PCF8574)

IC BLOCK DIAGRAMS
IC001 TA8200 <Audio Output>
AMP2
12 3456789101112
AMP1
SPEAKER SPEAKER
OUT1
OUT2
AUDIO IN2
AUDIO IN1
RIPPLE FILTER
TA8200AH
GND
GND
VCC
IC101 TDA9321H <IIC bus controlled TV input processor>
-19- F7YLV

-20-
F7YLV
IC201 TDA9178T <YUV Picture Improvement>
smart peaking
LT1
VDC
CDS
CT1
ADC
spectral processing
output
stage
delay
control
Sout
Yout
Uout
Vout
colour
processing
luminance
processing
saturation
correction
input-
stage
supply
window
generation
calibrate
noise
measuring
featuremode
detection
colour vector processing
'cue flash'
luminance vector processing
black stretch
histogram processing
gamma control
skin tone correction
green enhancement
blue stretch
'Sandcastle'
'ground
ADext1(low frequencies)
ADext2(low frequencies)
ADext3(low frequencies)
I C-control
I C- 2
2
Vcc
DECDIG
Vin
Uin
Yin
U.V
Y
CF
IC202 TDA9330H <IIC bus controlled TV display processor>