Sanyo C28WP1 User manual

PART No. SKSM0152 F2JE
Colour Television Service Manual Model C28WP1(Europe)
C28WP1B(U.K)
C28WP1E (Ireland)
Service Ref. No. C28WP1-00
Service Ref. No. C28WP1B-00
Service Ref. No. C28WP1E-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
PRODUCT CODE
1113 29404 (C28WP1)
1113 29401 (C28WP1B)
1113 29408 (C28WP1E)
ORIGINAL VERSION
Chassis No. WB2-A
Contents
Safety notice . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2
Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2
Pin configuration of system control, CPU . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3
Chassis block diagrams . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-7
IC block diagrams . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8-17
Adjustment locations on the board . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .18-19
Service control adjustments . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .20
Circuit alignments . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .21
Adjustments in the service mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .23-25
Special functions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .25
Cabinet parts list . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .26
Electrical parts list . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .27-48

-2- F2JE
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 check +B1 volt power supply, and and that the high voltage is 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 //!\ 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 /!\ .
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.
Specifications (C28WP1) (C28WP1B) (C28WP1E)
Power source AC 220~240V 50Hz <-- <--
Television system System B/G) System I System I/I
Colour system PAL <-- <--
Receiving channel VHF E2~E12 n/a A~J
UHF 21~69 <-- <--
CATV S1~S41, X,Y,Z, Z+1, Z+2 n/a S1~S41,X,Y,Z,Z+1,Z+2
Common Specifications
Aerial input impedance 75ohm
AV terminal
21 Pin socket AV1 CENELEC standard<RGB/,S-in>
AV2 CENELEC standard
Front AV terminal AV3 RCA type,Video,Audio-L/R input
Sound output Main 10 watts X2
(Continuous) Centre 12 watts X1
Rear 6 watts X 2
Picture tube 70cm diagonal, 106 degree
(Visible picture diagonal) 66cm
Dimensions (WxHxD) 739 x 494 x 485 mm
Weight 38.5 Kg
SPECIFICATIONS
SAFETY NOTICE

-3-
F2JE
PIN CONFIGURATION OF SYSTEM CONTROL, CPU
1
2
4
5
8
9
10
11
13
14
15
16
17
19
20
21
22
23
25
26
30
31
60
63
62
61
60
59
57
56
55
53
52
46
45
44
43
42
41
36
34
33
I DENT
CHROMA ID
KEY IN
RC SIGNAL
COLOUR
BRIGHTNESS
CONTRAST
SHARPNESS
SCLK
DATA
I2C BUS SW.
SYNC ID
PAL/NTSC
THRESH HOLD
SQ
CLK
SI
AFT
I2C SCL
I2C SDA
OSC
OSC
Vcc +5V
H-SYNC
V-SYNC
OSD RED
OSD GREEN
OSD BLUE
OSD BLANKING
POWER ON/OFF
LED DRIVE
AV1 SW
AV2 SW
SOUND MUTE
LINE MUTE
SC1 FUNCTION
SC2 FUNCTION
POWER FAILURE DET.
IGNORE
TITLE IN
PITTARI
NORMAL
IC801
M37207MB-
TO SUB VIDEO
BOARD
TO Y/C SEPARATION
BOARD
D/A CONVERTER CIRCUITS
IDENT 4
COLOUR 26
BRIGHT 17
CONTRAST 25
SHARPNESS 14
AFT 44
IC101
TDA8361
FBP
SANDCASTLE PLS
TO
Q203,
Q204,
Q205
TO IC201-
PIN21
TO IC1001
PINS 6, 12
FROM
SCART1, 2
TO
DEFLECTION
BOARD
SYSTEM CONTROL

-4- F2JE
A101 TUNER PACK
Q101 X101
SAW
IC101
TDA8361
<IF/VIDEO/CHROMA>
IC270
TDA4661
<1H DELAY>
Q122 SIF TRAP
Q135 Q132 Q134
EQUALISER
AV1
AV2
AV3 VIDEO-IN
VIDEO-IN
VIDEO-IN
R/G/B/BLK-IN
IC1001 TA8747N <AV SELECTOR>
AV1
AV2
FROM CPU
BACK BOARD
3L Y/C SEPARATION BOARD SUB VIDEO BOARD
TELETEXT BOARD
CRT BOARD
TV-IN
VIDEO-IN
Y-OUT C-OUT
MONITOR-OUT
Y-OUT
C-OUT
R/G/B/BLK-OUT
R/G/B-IN
Y-IN
C-IN
BLK-IN
VIDEO-IN(INTERNAL)
VIDEO-OUT
R/G/B-OUT
R/G/B/BLK FOR OSD FROM CPU
Q203 Q204 Q205
R/G/B BUFFER
R/G/B
R-Y/B-Y-OUT
R-Y/B-Y-IN
CRT
Q2761 Q2772 Q2782
VIDEO-OUT
45 46
30 31 28 29
16 14 11 12 22
23 24 16
15
7
13
21
20 19 18
1
35 28 33
31
25
2313
7
1
6
12
VIDEO-IN
VM-OUT
Y-OUT
Velocity Control circuit
BLOCK DIAGRAM <VIDEO SIGNAL PROCESSING>
CHASSIS BLOCK DIAGRAMS

-5-
F2JE
A101 TUNER PACK
Q101
IC3801
SIF
<TDA2545A>
IC3811
A2 STEREO
<TDA9821>
IC101 IF/VIDEO/CHROMA <TDA8361>
IC3401
<TDA9840>
IC3451 NICAM
<SAA7283> IC3121
<TDA9860>
IC3201
<TDA9860>
IC051 AUDIO OUTPUT FOR CENTRE/REAR <TA8216H>
IC001 AUDIO OUTPUT FOR FRONT <TA8200AH>
FRONT L SPEAKER
FRONT R SPEAKER CENTRE SPEAKER
SURROUND SPEAKERS
EXT. SP TERMINAL
IC1001
AV SELECTOR
<TA8747N>
BLOCK DIAGRAM < AUDIO SIGNAL PROCESSING>
SIF BOARD
BACK BOARD
NICAM & DOLBY BOARD
1 16 12 1
15
8
7
AF1
AF2
61
7
8
9
14
13
L
R
16
7 29
15
8
L
R
NICAM
MONO.
SIF
MAIN
SUB
AV1
AV2
AV3
TV-L
TV-R
AV1-L
AV2-L
AV3-L
AV1-R
AV2-R
AV3-R
36
2
8
14 34
4
10 16
27
26
35
LR
18
15
L
R2
4
12
7
18
15
42
712
SURROUNDCENTRE
SURROUND
CENTRE
HEADPHONES
10
23
924
10 9
34 13
10
15 14
23
IC3151 <LV1011>
IC3161 LA2785>
DOLBY CIRCUIT

-6- F2JE
IC051
AUDIO OUTPUT
FOR CENTRE/REAR
<TA8216H>
IC001
AUDIO OUTPUT
FOR FRONT
<TA8200AH>
FRONT L SPEAKER
FRONT R SPEAKER
CENTRE SPEAKER
SURROUND SPEAKERS
BLOCK DIAGRAM < DOLBY PRO LOGIC SURROUND PROCESSING>
2
4
12
7
CENTRE
HEADPHONES
2
4
12
7
SURROUND
IC3121
TDA9860
<UNIVERSAL AUDIO
PROCESSOR>
IC3161
LA2785
<DOLBY PRO LOGIC
SURROUN DECODER
IC3151
LV1011
<DOLBY SURROUND
PASSIVE DECODER>
IC3201
TDA9860
<UNIVERSAL AUDIO
PROCESSOR>
K34B
L-IN
R-IN 3
5
23
10
24
9
15 18 L-OUT <FRONT>
R-OUT <FRONT>
R
L
10
937
36 35 34
8
9
10
16
15
13
23 10
18 15
L-mix IN
R-mix IN
L
R
SURROUND
CENTRE
L-mix
R-mix
SURROUND
I2C Bus
SCL/SDA
CLK/DATA
FROM CPU
16 17 41
42
2 3 16 17

-7-
F2JE
IC101
VIDEO/CHROMA/DEFLECTION
<TDA8361>
Q402
T401
H-DRIVE
Q403
H-OUTPUT
C421
C422
C465
T402
FLYBACK
HIGH
VOLTAGE
L461
Q421
S-C
SW
IC423
PCC
Q461
Q462
ABL
1
C424 C425
C426
C427
DELECTION
YOKE
HORIZ.
VERT.
C512
R512
IC501
V-OUTPUT
<LA7833>
IC521
PCC
<BA4558N>
IC531
V-DRIVE
<TA8859AP>
NORMAL/
PITTARI
MODE SW
FROM CPU
37
42 13
1
10
96
8
2
SCL
SDA
I2C BUS
42
8
7
V-FEEDBACK
V-DRIVE
H-DRIVE
PCC
V-TRIGGER
3
4
BLOCK DIAGRAM <H&V DEFLECTION>
VR371
H-CENTRE
39

-8- F2JE
IC BLOCK DIAGRAMS
IF AMPLIFIER AGC VERTICAL
OUTPUT PHASE 1
DEMODULATOR AFC AND
SAMPLE AND HOLD VERTICAL
DIVIDER LINE
OSCILLATOR
VIDEO IDENTIFICATION VIDEO
AMPLIFIER POWER
RESET H AND V
SEPARATION
NOISE DETECTOR
PREAMPLIFER MUTE
SWITCH VOLUME
PHASE 2 XTAL
OSCILLATOR HUE
CONTROL
TUNING SYSTEM
MANAGER PHASE
DETECOR
DEMODULATOR
COLOUR KILLERS
COINCIDENCE DETECTOR
ACC AMPLIFIER MATRIX CLAMPS
SET
CLAMP SWITCH
OUTPUT STAGES
LUMINANCE MATRIX
CHROMINANCE BANDPASS
PWL
Y DELAY PEAKING
CHROMINANCE SWITCH
LUMINANCE SWITCH
TRAPAND BYPASS
TUNING
PLL
TEST
LIMITER
SUPPLY
IF IN1
IF IN2
TUNE ADJ
FM DEM1 FM DEM2
AUDEM
EXTAU
SOIF
DEC DIG
GND2 GND3 Vp DEC
FT
CHROMA CVBS
EXT PEAK IN CON
COLOURRGBIN BRI
RO
GO
BO BI
GI RI
FROM TDA4661
TO TDA4661
DET
HUE
XTAL OUT
XTAL2
XTAL1
H OUT
FBI/SCO
PH2LF
H OSC
PH1LF
V RAMP
VFB
V OUT
AFCOUT
DEC AGC
AGC OUT
AU OUT
IDENT
45
46
49
2
3
7
1 6
51
5
8
11 9 10 52 12 16 13 15 14 25 26 21 17
20
19
18
24
23
22
29
28
31 30
33
27
3235
3437
38
39
36
40
42
41434448
4750
4
TDA8361
BYI
BYO BYO
RYI
IFVO
CVBS INT
DEC BG
DECDEM
TDA8361 <IF/VIDEO/CHROMA/DEF.>

-9-
F2JE
SIGNAL
CLAMPING LINE
MEMORY SAMPLE-
AND-
HOLD LP
LP
DIVIDER
BY 2
6 MHz
CCO
LP
SAMPLE-
AND-
HOLD
LINE
MEMORY
DIVIDER
BY 192
FREQUENCY
PHASE
DETECTOR
SIGNAL
CLAMPING
SANDCASTLE
DETECTOR
16
14
9
5
10 134,8
12
11
GND1 Vp2 GND2
2
6
13
15
7 i.c.
n.c.
n.c.
n.c.
n.c.
±(B-Y)
±(R-Y)
TDA4661
addition
stages output
buffers
colour-difference
output sugnals
±(R-Y)
±(B-Y)
colour-difference
input signals pre-amplifiers
analogue supply
digital supply
sandcstle
pulse input
Vp1 3MHz shifting clock
TDA4661 <1H DELAY LINE>
AMP2
12 3456789101112
AMP1
SPEAKER SPEAKER
OUT1
OUT2
AUDIO IN2
AUDIO IN1
RIPPLE FILTER
TA8200AH
GND
GND
VCC
TA8216H/TA8200AH<AUDIO OUTPUT>

-10- F2JE
AGC
RAMP PULSE
SHAPER TRIGGER PULSE INFERFACE
∫ CORRECT LINEARUTY
CORRECTION S-C CORR.
PALABOLA
CORR. ETH
CORR. ETH
CORR.
16 15 14 13 12 11 10 9
8
7
654
3
2
1
TA8859AP
ETH IN
VERT F/B
GND
EW F/B
Vcc
ETH DRIVE
VERT. DRIVE
SCL
SDA
TRIG IN
TA8859AP <DEFLECTION CORRECTION>
GND
VERTICAL
DRIVE VERTICAL
OUTPUT V-OUTPUT
VCC
6
4
3
15 LA7833
THERMAL
PROTECTION
PUMP UP
7
2
V-DRIVE PLS
INPUT
LA7833 <VERTICAL OUTPUT>
BIAS
OSC UVLO
R
SC
2
87 1
3
5
6
F/B
GND
IS
OUT
Vcc
RTCT
CS
FA5311P
FA5311P <POWER SWITCHING CONTROLLER>

-11-
F2JE
7-STAGE
LIMITTER
AMPLIFIER 1
7-STAGE
LIMITTER
AMPLIFIER 2
SUPPLY
VCO1
VCO2
5.5MHz (B/G)
5.74MHz (B/G)
INTERCARRIER
VCOREF
Vp OPTIONAL STEREO
CHANNEL SEPARATION
ADJUSTMENT
VAF2
VAF1
1
15
13 14 12 11 MUTE 10
7
8
9
TDA9821
TDA9821 <DUAL CHANNEL SOUND DEMODULATOR>
DEMODU-
LATOR
DEMO.
17
TDA2546A
REF.
AMP.
AGC
FM
DEMO.
LIMITER
AMP.
1st Sound IF &
Demodulator LIMITER
AMP.
18
1
2
2nd Sound IF
& FM Demo.
314 12 13 11 5
4
6
87
10
9
IF
INPUT
Cd
MUTE
OUTPUT
5.5MHz
(5.742MHz)
38.9MHz
5.5MHz
(5.742MHz)
External
FM demodulator
TDA2545A <SIF DEMODULATOR>

-12- F2JE
POWER-
ON
RESET
IIC BUS CONTROLLER
SHIFT REGISTOR (PISO)(SIPO)
LATCH
6-BIT
DAC
COMP.
LATCH
COMP.
LATCH
WRITE BUFFER
8-bit
6-bit
1/2Vcc
3-bit
5-bit 5-bit
(C0-C4)
(C5-C7)
15
14
SDA
SCL
A0
A1
A2
1
2
313 VDAC
12
11
10
9
7
6
5
4
P7
P6
P5
P4
P3
P2
P1
P0
JLC1562
MULTIPLE
SOURCE
AND MODE
SELECTOR
(CROSSBAR
SWITCH)
REFERENCE
VOLTAGE
HEADPHONE
CHANNEL
VOLUME
VOLUME
CONTROL
STEREO
SPATIAL
STEREO
PSEUDE
STEREO
FORCED
MONO BASS
CONTROL TREBLE
CONTROL VOLUME BALANCE
MUTE
IIC BUS
CONTROL 2
31
19 25 17 16
21
22
18
15
14
1211
2729
10
CBL1 CBL2 CTL
MAD SDA SCL
IIC BUS
P2
P1
Vo3
Vo4
LOUDSPEAKER
CHANNLE
OUTPUTS
L
R
CTR
CBR1 CBR2
CPS2
CPS1
Vi8
Vi7
V02
Vo1
LINE OUTPUT or OPTIONAL
SURROUND SOUND DECODER
CONNECTION
GNDCSMO
4824
923
28
30
1
32
3
5
6
Vi1
Vi2
Vi3
Vi4
Vi5
Vi6
VP
AUX
SCART
MAIN
AUDIO INPUTS
26 7 20 13
Vo5 Vo6 Vo7 Vo8
LRLR
SCART
OUTPUT HEADPHONE
AMPLIFIER
TDA9860
JLC1562 <I2C BUS I/O EXPANDER>
TDA9860 <UNIVERSAL HI-FI AUDIO PROCESSOR>

-13-
F2JE
LPF
DUAL 1
CONTROL
LOG DIFF
LOG DIFF
RECT
RECT
RECT
RECT
LPF
VCA
VCA VCA
VCA VCA
VCA VCA VCA
MUTE
CTRIM
CMOTE
VR
VR
VR CONTROL
BALANCE CONTROL
NOISE
CH
CONTROL OSC
DEVIDER
NOISE
FILTER
NOISE
GENERATOR
LPF
Vref.
42 41 40 39 38 37 36 35 34 33 32 31 30 29 28 27 26 25 24
2123
1918
17
1615
141312
1110
9
87
6
5
4
3
2
1
LA2785
BAB
A
BABA
L-OUT
R-OUT
S-OUT
C-OUT
LT IN RT IN
CONTROL
LOGIC
7K LPF
OUT IN
NR
CONTROL
12k SRAM
OUT
A/D D/A
IN OUT IN
EFECT SW
20k LPF S-TRIM
FILTER
24 23 22 21 20 19 18 17 16 15 14 13
S-OUT
VREF
RMIX OUT
LMIX OUT
VDD
VSS
CLK
DATA
ENABLE
1 2 3 4 567 8910
11 12
DELAY
OUT
L IN R IN S IN
VCC
AB
C
ABAB
A
B
BSW3 BSW2
BSW2 BSW2
AB
BSW2
VREF VREF
VREF
VREF
VREF
VREF VREF
AB
BSW2 AB
BSW2
LV1011
LA2785 <DOLBY PRO LOGIC SURROUND MATRIX DECODER>
LV1011 <DOLBY SURROUND PASSIVE DECODER>

-14- F2JE
QUADRATURE MIXERS, BASEBAND FILTERS AND AGC GAIN STAGE
COSINE SINE
CARRIER LOOP PHASE DETECTOR AND DATA SLICERS
CARRIER LOOP QUADRATURE VCO
BIT RATE CLOCK RECOVERY
AGC CONTROLLER
NICAM 728 DECODER AND DEVICE CONTROLLER
XTAL OSC
IIC
DAI DIGITAL FILTER, GAIN,
DE-EMPHASIS
NOISE SHAPER (LEFT CHANNEL)
BITSTREAM DAC (LEFT CHANNEL) OUTPUT SWITCHES AND BUFFER (LEFT CHANNEL)
NOISE SHAPER (RIGHT CHANNEL)
BITSTREAM DAC 9RIGHT CHANNEL)
OUTPUT SWITCHES AND BUFFER (RIGHT CHANNEL)
26 24 30 31 36 37 21 20 34 33 35 39 48 43 40 41 42 50 49 51 246
44 12 16 17 34 11 5
15
8
6
7
19
18
1524738
4525
27
3222
23
28
29
MIXREF
DQPSK
VDDF1
VSSF1
COFF
CEYE
VDDF2
VSSF2
REMO
REMVE
IREF
VROF
VRCF
CLKLPF
DATAOUT
DATAIN
XTAL
OSC
VSSX
SDA
SCL
ADSEL
DOBIA
VDDD
VSSD
VSSDAC
EXTL EXTL
VDDA
VSSA
VROA
VRCA
SOFF
SEYE PKDET VCONT VCLK
PCLK
TEST
RESET
PORT2
MUTE
PORM
PORA
EXT-L
EXT-R
OP-R
OP-L
REPRESENTS CONTROLLER BUS
SAA7283ZP
LEVEL AND
STEREO
ADJUSTMENT
DIGITAL
PLL
OSCILLATOR
DIGITAL PLL
AND
DEMODULATOR
DITAL PLL
AND
DEMODULATOR
DIGITAL
INTEGRATOR
DIGITAL
INTEGRATOR
GENERATION
OF
REFERENCE
VOLTAGES
POWER-ON
RESET
IIC BUS
CONTROL
CONTROL
LOGIC
6dB
6dB
6dB
6dB
500mV RMS
500mV RMS
500mV RMS
500mV RMS
MUTE
VREF
LEVEL STEREO
-2dB
0 to 4.5dB
0 to 4.5dB
-2dB
0 to 4.5dB
A/MONO L
R/B
250MV RMS
L/A/MONO
250MV RMS
DUAL bit
STEREO
bit
14
13
12
11
V o1
Vo2
V o3
Vo4
MAIN
SCART
20
1
SCL
SDA
16
18
6
19 GND
XTAL 1/2 Vp
Vp
3
2
4
5
8
7
Vi1
250mV RMS
(from 1st SC)
250mV RMS
(from 2nd SC)
AF1
AF2 Vi2
Vipil
CDCL
CAGC
CLP
15 17 9 10
CD1 CD2 Vi3 Vi4 500mV RMS
TDA9840
SAA7283ZP <NICAM DECODER>
TDA9840 <STEREO/DUAL SOUND PROCESSOR>

-15-
F2JE
CORING DETECTOR
1st
DIFFERENTIAL HOLD
DELAY
LIMITER
CORING
CORING
2nd
DIFFERENTIAL
GAIN
CONTROL
GAIN
CONTROL
SW
DELAY
GAIN
CONTROL
GAIN
CONTROL
ADDER
ADDER
LIMITER
SW
ADDER
29 30 5 318 20 22
21
23
13
14
15
16
271
4
10
VM OUT
Y OUT
Vcc
GND
VM IN
VM CONTROL
VM Y OUT
SHARPNESS
VM LIMITER
YS IN
LUM. DET.
DSC OUT
GAIN
GAIN
BIAS
DSC IN 2
25
19
24
26
28
17
Y IN
DELAY
CORING
BIAS
BIAS
IN
76812
SEP.
BIAS2
BIAS1
BIAS
911
AN5342K
AN5342K <VIDEO APERTURE COMPENSATOR>
PEDESTAL
CLAMP
BLANKING
REFERENCE
LIMITTER COMPARATOR GAIN
CONTROL
AMPLIFIER
BLACK LEVEL
DETECTION
APL
DETECTOR
TRANSMISSION
RATE
COMPENSATION
OUTPUT
BUFFER
BLACK
LEVEL
PEAK HOLD
12345 67 8
CX20125
CX20125 <DYNAMIC PICTURE CONTROLLER>

-16- F2JE
PORT PORT
MEMORY MODE
A.C.F.
PROCESSING
CONTROL LOGIC
CONTROL LOGIC
CLKBUF
AD
IBIAS SELF BIAS
MODE
CLAMP
BPF BPF
BPF
CLKBUF
1H/2H
1H/2H
DAC DAC
BPF
36 35 34 33 32 31 30 29 28 27 26 25
1234
5678910
11 12
37
39
38
40
42
41
43
45
44
46
48
47
24
22
23
21
19
20
18
16
17
15
13
14
MC141625B
D3
D1
D2
D0
PAL/NTSC
N/M
DGnd
CLK
DVcc
Comb/BPF
BW
Bypass
TE1
MODE1
TE0
MODE0
DGnd
ADCLK
NC
CLOUT
VIN
CLC
RTP
RBT
D4
D5 D6
D7
C0 C1
C2
C3 C4
C5
C6 C7
DGnd
DVcc
NC
YOUT
DAREF
DAGnd
DAVcc
COUT
NC
IBIAS
ADGnd
ADVcc
MC141625B <PAL COMB FILTER>

-17-
F2JE
SYNC SEP COMP. COMP.
BURST GATE
PULSE
2ND AMP.
1ST AMP. BURST GATE
ACC DET. ID PULSE
TINT
VREF
APC
DET. 4Fsc VCZO
1/4
COMP.
ID KILLER
DET. R-Y
DEMOD. B-Y
DEMOD.
27 26 25 24 23 22 21 20 19
57
68910 11
12
13
14
16
17
18
13
28
1
2
3
4
SYNC OUT
BURST
BURST
WIDTH
CHROMA
OUT
COLOR
CONT.
Fsc
NTSC/PAL
R-Y IN
Vcc
B-Y IN
GND
VCXO IN
TINT
B-Y OUT R-YOUT
ID FIL
ID REF
BLK IN
HD IN
VIDEO IN
FB
SLICE LEV.
CHROMA IN
SELF BIAL
ACC FIL
V REF
APC FIL
VCXO OUT
M51271FP
M51271FP <NTSC/PAL CHROMA DEMODULATOR>
CLAMP
DECODER
COMB
FILTER
MUTE MUTE
AUDIO
VIDEO
X2 X2 X2
÷2
MONITOR OUT
Y OUT
Y IN
C IN
C OUT
L OUT
R OUT
SW1
SW2 SW3
MUTE
MODE OUT
GND
RE3
RE4 Vcc
RTV
RE1
RE2
LE2
LE3 LE4
C3
LTV
LE1
C1
C2 Y 3
Y1
Y2 E4
E2
E3 TV
E1
32 16 10 420 34 14 8 2 19 36 17 11 515 9 313 71 21 35
30
28
31
25
23
33
2726
612
18
22
29
24
TA8747N
R IN L IN VIDEO IN
C IN Y IN
TA8747N <AV SELECTOR>

-18- F2JE
AFT Adjustment
VIF Alignment
AGC Adjustment
H-Centre Adjustment
Grey Scale Adjustment
Q2781
Q2101 Q2180
Q2761
Q2771
Q2762
RED OUT
Q2782
BLUE OUT
K7Y
K17L
K27E
K27V
Q2772
GREEN OUT
Q2153
Q2152
Q2151
Q1705
K17M
K27B
K2761
Q1701
Q1703
Q1707
Q1702
Q1708
K17C
D1707
Q1706
Q1711
D1705
Q1709
K17J K17P
VR782
BLUE BIAS
VR762
RED BIAS
VR772
GREEN BIA
S
VR781
BLUE DRIV
E
VR761
RED DRIVE
Grey Scale Adjustment
Main Board
CRT Board
ADJUSTMENT LOCATIONS ON THE BOARDS
T141
AFT
VR120
AGC
VR361

-19-
F2JE
T402
FLYBACK
TRANS.
K4A
L704
L425
L461
C491
C402
Q402
T401
H
ORIZ DRIVE
T
RANS.
C481
K4C C486C482
K4S L462
Q461
Q462
C542 C543
Q541
Q542
Q531
C531 C546
K4E
C521
L502 C504 C512
Q505 Q501
SW501
V-CENTRE
UP
DOWN
KB4
K6A
IC651
C652
Q614
C651
IC611
C616
C624 C618
Q615
C621
T611
CONVERTER
TRANS.
K6G
Q631
Q616
C633
K6D
L633
Q633
POWER
DRIVE Q634
POWER
SWITCH Q632
IC531
R426
K4H
Q403
HORIZ.
OUTPUT
IC423
Q461 IC501
VERT.
DEF.
C506
SCREEN
FOCUS
IC481
Power & Deflection Board
Y-out Adjustment
3-Lines Y/C Separation Board
V-Centre Adjustment
Grey Scale Adjustment
Focus Adjustment
C3815
C3814
C3813
C3811 X3814
X3811
C3842 T3801
IC3801
K38H2 K38H2
X3801
C3807
SIF Board
SIF Alignment

-20- F2JE
Sub Power Board
VR1301 TP1310 VR1302
C1324
C2103
C2104
C2105
C1331
C1335
C1301
K20H
K20J
IC1302
C1318
IC1303
SUB CPU
X1301
C2045
IC2001
SHARPNESS
C2031
C2024
C2013
C2006
C2088
C2504
C2512
C2511
C2501
C2508
C2007
C2003
TP1311
C2034
IC2501
BLACK LEVEL
ADJ.
Sub Video Board
K31AA
TP31C
X3151
IC3101
1C3201
K34B K34A K31CC K31BB
IC3121
IC3161
TP31A
TP31B
T3401
X3401
X3461
TP31G
TP31D TP31F
TP31E
IC3401
A2 STEREO
DECODER
IC3451
NICAM
DECODER
NICAM & Stereo Board
H-Blanking Adjustment
Pilot Alignment
Dolby +B Adjustment
Required only model C28WP1