SANYO SM-14-C4FVH Service Manual AC5-CG
SERVICE MANUAL Colour Television
Specifications
Power Source . . . . . . . . . . AC110-240V, 50Hz/60Hz.
Colour System . . . . . . . . . PAL/SECAM/NTSC4.43/NTSC/PAL-60Hz
Television System . . . . . . B/G, D/KK’, I, M/M
Channel Coverage . . . . . VHF: E2-E12, A2-A13, R1-R12, J1-J12, K1-K9
UHF: 21-69, A14-A69, J13-J62
CATV: S1-S41, X, Y, Z, Z+1, Z+2
Video IF . . . . . . . . . . . . . . 38.0MHz
Aerial Input Impedance . . 75Ω
Ext. Terminals
Video inputs: Phone jack 2 (1Vp - p, 75Ω)
Audio inputs: Phone jack 2 (436mVrms, more than 40KΩ)
Video monitor outputs: Phone jack 1(1Vp - p, 75Ω)
Audio monitor outputs: Phone jack 1(436mVrms, less than 600Ω)
Sound Output (RMS) . . . . 5 W
Speaker . . . . . . . . . . . . . . 6 cm 12 cm 2 pcs.
Dimensions . . . . . . . . . . . . 364.5 (W) 361.7 (H) 383.3 (D)mm
Weight . . . . . . . . . . . . . . . approx. 8.6 Kg
Specifications subject to change without notice.
Original Version
Chassis Series: AC5-CG
C4FVH
FILE NO.
Model No. CE14SP4R
(Russia)
Give complete “SERVICE REF. NO.” for
parts order or servicing. It is shown on the
rating plate at the cabinet back of the unit.
This T.V. receiver will not work properly in
foreign countries where the television
transmission system and power source differ from the design specifications. Refer to
the specification table.
Service Ref. No. CE14SP4R-50
Product Code: 111356544
REFERENCE NO. SM5110650
T
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TV/AV
TIMER
14
7
85236
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0
9
A B
BASS
SURROUND
PP
P▲
CH SCAN
SWAP
P▼
MENU
PIC MODE
JXMYA
Contents
-2-
Safety Notice . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
Chassis Block Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-4
IC Block Diagrams . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-7
Service Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Service Adjustments with replacing Memory IC (IC802) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-11
Service Mode Adjustments . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12-13
Service Adjustments . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
Special Function . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .15
Purity and Convergence Adjustment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
Cabinet Parts List . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
Chassis Electrical Parts List . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18-25
Safety Notice
SAFETY PRECAUTIONS
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 pro-
vided 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.
X-RADIATION PRECAUTION
The primary source of X-RADIATION in television receiver is the picture tube. The picture tube is specially constructed to limit X-RADIA TION 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 check 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 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 .
-3-
Chassis Block Diagrams
MAIN SIGNAL PROCESSING CIRCUIT
CRT UNIT
9V
LED
D1910
A1901A
RC RECEIVER
KEYS
SW1901 - SW1906
FRONT CONTROL
Q901
180V
KEY-IN
CRT
R
G
ON-TIMER
32
RC-IN
28
IC801
12
HV
B
CPU
DY
L902
HEATER
4
3
21
20
19
IC501
SCL
SDA
5
Q432
VERT. /DEF.
1
6
IC802
5
EEPROM
OSD B-OUT
OSD G-OUT
OSD R-OUT
H-OUT
T431
H-DRIVE
IC201
IF/VIDEO/CHROMA
FOCUS
SCREEN
TRANS.
OSD G-IN
OSD R-IN
15
14
5/6
IF IN
Q431
H-DRIVE
R-OUT
OSD B-IN
19
16
42
EXT . VIDEO IN
HV
G-OUT
B-OUT
21
20
MATRIX
RGB
46
VIDEO OUT
44
INT . VIDEO IN
FBT
T471
52
SIF OUT
POWER SUPPLY CIRCUIT
VERT. OUT
23
54
SIF IN
T611
HORIZ. OUT
27
1
AUDIO OUT
5VRC
Reg.
TRANS.
CONVERTER
9V
IC281
1H
DL
2
AUDIO MONITOR OUT
11V
SECAM
7
R-Y OUT
35
40
SELECTED VIDEO OUT
24V
17
9
B-Y OUT
34
130V
VR631
SWITCH
VIDEO IN
51
EXT. AUDIO IN
X161
SAW
FILTER
A101
TUNER
REAR
AV TERMINAL
VIDEO IN
AUDIO IN
FRONT
AV TERMINAL
VIDEO IN
AUDIO IN
IC001
AUDIO AMP.
6
AUDIO OUT
SP901
8
2
12
AUDIO MONITOR OUT
AUDIO OUT
SP902
VIDEO MONITOR OUT
AV
REAR
TERMINAL
-4-
Chassis Block Diagrams
SYSTEM CONTROL
BASS EXPANDER CIRCUIT
A101
F/S TUNER
5
4
SDA
SCL
12
11
CIRCUIT
DEFLECTION
IC201
etc.
KEY
SWITCH
BASS EXPANDER ON/OFF (ON=HIGH)
COLOUR SYSTEM OPTION INPUT
34
KEY SWITCH IN
11
IC801
12
CPU
QXXAVC305P
29
13
SCL
2
POWER ON/OFF
SDA
1
9
IF/VIDEO / CHROMA/DEF.
PHOTO COUPLE
AFT SIGNAL INPUT
(ON=HIGH, OFF=LOW)
31
33
10
28
OSD GREEN OUT(Active=High)
OSD RED OUT(Active=High)
OSD BLK OUT(Active=High)
22
19
32
OSD BLUE OUT(Active=High)
211817
20
6
POWER CIRCUIT
HORIZ. SYNC IN (ACTIVE=LOW)
VERT. SYNC IN (ACTIVE=LOW)
(POWER ERROR=LOW)
POWER PROTECT IN
27
SDA
SCL
56
IC802
34
MEMORY
7
SOUND MUTE
(MUTE=H)
IC001
AUDIO AMP.
RESET INPUT (RESET=LOW)
SECAM KILLER INPUT (HIGH=SECAM)
(ON TIMER ON=Low)
RC SIGNAL IN
(ACTIVE=HIGH)
ON-TIMER LED OUT
VIF-M OUTPUT (HIGH=NTSC, LOW=OTHER)
RC PRE-AMP.
LED
CPU OSC OUT
CPU OSC IN
OSC
X801
32.768KHz
-5-
IC Block Diagrams
IC201 < IF/Video/Chroma/Def. > LA76818
Audio Output
FM Output/Selected
Audio Output
PIF AGC
RF AGC Output
PIF Input1
PIF Input 2
IF Ground
IF Vcc
FM Filter
AFT Output
Bus Data
Bus Clock
ABL
Red Input
Green Input
Blue Input
Fast Blanking Input
RGB Vcc
Red Output
Green Output
Blue Output
fsc output or C
Sync output
Vertical Output
Ramp ALC Filter
Horizontal/BUS Vcc
Horizontal AFC Filter
Horizontal Output
VOL
DC
1
2
3
AGC
RF
4
56
7
VCC 5V
IF
8
9
10
11
BUS
12
ABL
13
14
CLAMP
15
16
17
18
VCC
19 20
DRIVE/OUT-OFF
21
SYNC SW
FSC/
22
23
RAMP
VER
24
HOR
VCC
25
VCC
H
26 27
HOR
OUT
SW
AGC
IF
VIF
CONTRAST
BRIGHT
OSD
OSD
SW
VER
SEP
C/D
SHIFTER
PHASE
PEAKING
CORING
STRETCH
BLACK
REST
DC
CONTRAST
BRIGHT
MATRIX
RGB
VER
AFC2
DET
FM
LINE
SYNC
SEP
AFC1
VIDEO
DET
AFT
DELAY
ACC
DEMO
CLAMP
C/D
AMP
LIM
TRAP
ON/OFF
SW
CLAMP
SW
COLOR
HOR
BPF
TRAP
SW
BPF
PAL
+
ALC
LPF
1/256
IDENT
IF
VIDEO
SW
APC1
TINT
VCO
HOR
VCO
SPLL
VIDEO
AMP
APC2
DC ADS.
1H DELAY
VXO
DDS
BPF
A2C
PLL
CLMP
CLMP
CLAMP
FBP
SIF Input
SIF APC Filter
525354
SIF Output
51
Ext. Audio Input
APC Filter
4950
VCO Coil 1
48
VCO Coil 2
47
VCO Filter
46
Video Output
Black Level Detector
4445
Internal Video Input (S-C IN)
V/C VCC
43
5V
Video/Vertical Vcc
42
External Video Input(Y-IN)
41
Video/Vertical/BUS Ground
40
Selected Video Output
39
Chroma APC1 Filter
38
4.43 MHz Crystal
Clamp Filter
Chroma APC2 Filter
353637
SECAM R-Y Input
(Cr Input)
34
SECAM B-Y Input
(Cb Input)
33
CCD/Horizontal Ground
32
CCD Filter
31
VCC
CCD Vcc
1H
30
Clock (4MHz) Outupt
VCO IREF
2829
Flyback Pulse Input
IC Block Diagrams
-6-
IC201 <IF System Block Diagram> LA76818
11
12
BUS
Interface
SAW
5
6
4
8
7
PIF
In1
PIF
In2
IF In
9V
30K
RF AGC
Out
120K
IF VCC
IF
GND
VIF AMP
VIF 1
VIF 2
VIF 3
IF AGC
Drive
RF
AGC
2ndIF
AGC
RF AGC
Delay
6bit
IF AGC
Def
1bit
+
-
(6 Vcc)/7
To
BUS
3
0.022u
PIF
AGC
IF
AGC
Data
Clock
APC
Det
+π/4
-π/4
Snd
Det
Amp
52
SIF.Out
Sound
Trap
Video
Det
Buzz
Canceller
50
APC
Filter
330
0.47u
+
PLL Pull-in SW
To
BUS
Lock
Det
Video.Level
3bit
Amp
54
10p
SIF.In
Sound
BPF
VCO.Coil
VCO
COIL1
VCO
COIL2
48
49
VIF
VCO
Chroma
Counter
B/N
INV
IF
Ident
OSC
C/D
Amp
SIF. Sys
2bit
pre-
scaller
SIF
VCO
500K
BPF
SIF
APC
Filter
1K
0.01u
1000p
53
LIM
AMP
FM
Det
FM.Level
5bit
Chroma
C/D
APC
Det
500K
Det
To
BUS
Chroma
VCO
VIF
Counter
Reset
Pulse
VCO
Ident
VIF.Sys
2bit
Phase
Detector
A.MUTE
1bit
VOLUME
D/A
VOLUME
Filter
A.SW
1bit
Input
Select
VOLUME
(ATT)
-
+
-
+
2.5V
Amp
FM Gain
1bit
Deem-TC
1bit
De-
emph
FM Mute
1 bit
2
9
46
51
1
A.Fil.Def
1bit
VOLUME
7bit
47
VCO
Alignment
AFT
10
AFT
Vcc
100K
100K
0.1u
VCO
Filter
+
0.47u
Audio.out
+
Audio in
10u
Video
Out
FM
Filter
+
1u
FM
Out
0.01u
+
to BUS Line
+
-7-
IC Block Diagrams
IC501 < Vertical Output > LA78040/LA78040N
IC001 < Audio AMP .> AN7522N
Service Information
This TV set has a built-in power supply protection circuit.
It is provided to protect the TV set in case of a power supply circuit malfunctions. When something abnormality
occurs during TV reception, the TV set goes to the stand-by mode.
When an abnormality occurs during TV reception, it causes pin 27 of the CPU to go continually Low for about
one second. The CPU detects that this has occurred and outputs the signal from pin 31 to switch off the power
supply lines.
Releasing the protective circuit and restoring power supply
To release the protective circuit and restore power supply, turn the power to the TV set OFF and then ON again
via either the main power switch or the ON-OFF button on the remote control. This will work only if the power
supply trouble was temporary. If there is permanent trouble such as a damaged circuit, power cannot be
restored and the circuit will have to be repaired.
Protection Circuit
IC281 <SECAM Decoder> LA7642NM-E-P
Thermal
Protection
AMP
+
Pump
Up
1
INVERTING
INPUT
2
Vcc
3
4
GND
PUMP UP
OUT
5
6
OUTPUT
Ver. OUTPUT
7
NON INV.
ST A GE Vcc
INPUT
AV/SECAM
VccEQU-Adj
20
Bell/EQU
Adj
2
1
F0-Fil Kil-Fil
N.C.
N.C.
1819
Video In
Kil-Out
17
16
ACC
SW3
Bell/EQU
Filter
KILLER
ID-KIL
4
3
4.43DC
SW1
ID
5
ID-Fil
15
System
LIM
F0 Adj
6
4M-DC
4.43MHz In
14
PLL
DET
R-Y Out
SW2
Filter
7
VCO
N.C.
13
N.C.
SW/ALC
8
SC-In
Clamp
B-Y Out
12
9 10
4MHz In
11
Pulse
DET
Pulse
I/F
GND
+
2
1
Vcc
Ch.1 Input (+)
3
+
-
45
-
Ch.1 Output (-)
GND (Ch. 1 Output)
6
Standby
Ch.1 Input
8
7
Ch.2 Input
GND (Input)
+
-
910
Volume
Ch.2 Output (-)
11 12
GND (Ch. 2 Output)
+
-
Ch.2 Output (+)
-8-
Service Adjustments with Replacing Memory IC(IC802)
Note: The CPU (IC801) and memory IC (IC802) store the service adjustments data and controls data for each
circuit.When the Memory IC(IC802) is replaced, some of the service adjustments should be readjusted to
obtain the best performance. The necessary service adjustments are carried out by using the RC handset.
Please set up the TV set with following steps [1] to [2].
[1] Initializing Procedure
1. Put a new memory IC.
2. Turn on the TV set.
3. Press and hold the TV/AV Selector on the TV set for more than 2 seconds. The following picture appears on the
screen.
4. Press the PROGRAMME UP on the TV set while the above On-Screen Display is still on the screen. The following
picture appears on the screen.
This completes the initialization of memory IC.
Following shows the initialized contents of memory data by this procedure.
- Plug & Play : No executed
- Inhibit Data : Cancelled
- Ch Skip Data : Cancelled
- Sound Volume Data : 10/63 steps.
- Volume Lock : OFF
- Tuning Lock : OFF
- Music Mode : OFF
- A V Start : OFF
- Colour System : AUTO
1
CLR
TV/AV Selector
PROGRAMME UP
[2] Required Service Adjustments
Readjust the following service adjustments.
Adjustments Service Mode No. & Item
RF AGC Item 01, RF AGC
Horizontal centre Item 02, H-PHA
Vertical size Item 04, V-SIZ
Vertical-S correction Item 05, V-SCO
Vertical linearity Item 06, V-LIN
Gray scale Item 14-17, 19-21
Further adjustment please refer to page 12 and 13.
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Service Adjustments with Replacing Memory IC(IC802)
-9-
DATA INITIAL
No. ITEM RANGE SETUP DESCRIPTION
DATA
01 RFAGC 0~63 30 RF AGC Adj.
02 H-PHA 0~31 9 H-Phase (H-Centering) Adj. (50Hz)
03 V-POS 0~63 40
V-Position (V-Centering) Adj. (50Hz)Fixed.
04 V-SIZ 0~127 75 V-Size Adj. (50Hz)
05 V-SCO 0~31 10 V-S Correction (50Hz)
06 V-LIN 0~31 17 V-Linearity Adj. (50Hz)
07 H-P60
-16~+15
+5 H-PHASE Adj. (60Hz)
08 V-S60 -
64~+32
0V-Size Adj. (60Hz)
09 OSDHP 0~255 26 OSD H-Position Adj.
10 OSDC 0~127 45 OSD Contrast Adj.
11 V-SCP 0~7 7 Correction of the V-size
accompanying brightness change.
12 H-SCP 0~7 7 Correction of the H-size
accompanying brightness change.
13 SBIAS 0~127 105 Sub Bias Adj. (Do not change)
14 RBIAS 0~255 0 Red Bias Adj.
15 GBIAS 0~255 0 Green Bias Adj.
16 BBIAS 0~255 0 Blue Bias Adj.
17 RDRIV 0~127 64 Red Drive Adj.
18 GDRIV 0~15 8 Green Drive Adj.
19 BDRIV 00~127 64 Blue Drive Adj.
20 1-LINE APPEAR White Balance Adj.
21 DRV White Balance Adj.
22 B-YD 0~15 8 B-Y DC level Adj.
23 R-YD 0~15 8 R-Y DC level Adj.
24 B-YDN -
16~+15
0 NTSC B-Y DC level Adj.
25 R-YDN -
16~+15
0 NTSC R-Y DC level Adj.
26 SBDC -
16~+15
−7 SECAM B-Y DC level Adj.
27 SRDC -
16~+15
−2 SECAM R-Y DC level Adj.
28 G-YA 0,1 0 G-Y angle Adj.
29 RBGB 0~15 8
R-Y, B-Y Gain Blance Adj. (Do not change.)
30 RBAG 0~15 8
R-Y, B-Y Angle Adj. (Do not change.)
31 G-YAN 0,1 0 NTSC G-Y Angle Adj.
32 RBGBN -
16~+15
0 NTSC R-Y, B-Y Gain Balance Adj.
33 RBAGN -
16~+15
0 NTSC G-Y, B-Y Angle Adj.
34 COGV 0~3 0 Coring Gain Adj.
35 BLKS 0~3 3 Setting of Black stretch start.
36 BLKG 0~3 3 Setting of Black stretch gain.
37 BRTA 0,1 0 On and off of ABL.
38 BRST 0,1 0 Setting of ABL.
39 BRTH 0~7 0 Setting of ABL.
40 WPL 0~3 2 White peak limitter.
41 YGAM 0~3 0 Y Gamma setting.
42 PORW 0,1 0 Switching of Pre-shoot and
Over shoot in AV mode.
Following table shows the initial values which have been stored in the CPU ROM, and items for the service adjustments.
Service mode adjustments table in CPU ROM
DATA INITIAL
No. ITEM RANGE SETUP SCRIPTION
DATA
43 PORS 0~3 2
Pre-shoot/Over shoot Adj. in AV mode.
44 RFCO 0~3 0 RF Coring Gain Adj.
45 PORWN 0,1 0
Switching of RF Pre-shoot and Over shoot.
46 PORSN 0~3 0 RF Pre-shoot/Over shoot Adj.
47 TINT -16~+15 0 RF Tint Adj.
48 TINT443 -16~+15 -12 NTSC 4.43 Tint Adj.
49 SHRF -32~+31 0 RF Sharpness Adj.
50 TEXTC -128~+127
0 OSD TEXT Contrast.
51 VOLUM 0~255 127 Volume Control Adj.
52 DEEM 0~1 0 De emphasis TC.
53 VIFSW 0~3 0 VIF System Switch.
54 SIFSW 0~3 1 SIF System Switch.
55 V-LVL 0~7 4 Video Level Adj.
56 FMLVL 0~31 16 FM Level Adj.
57 IFOM-S 0,1 0 Over Modulation Switch
58 IFMN-S 0,1 1 Audio Monitor Switch
59
IFTRAPS
0,1 1 SIF Trap Switch ON/OFF
60 IFMLVL 0~255 136 Video Level & Modulation
61 TRAP-T 0~7 4 Trap Test
62 H-FRQ 0~63 34 Horizontal Frequency
63 FBTS 0,1 0 FBT Blanking Switch
64 COOP 0~7 7 Color Killer Option
65 HBLKL 0~7 3 H-Blanking Control. (Left)
66 HBLKR 0~7 3 H-Blanking Control. (Right)
67 AFCRF 0,1 0 RF AFC gain & Gate Adj.
68 VSRF 0,1 0 RF Vert. Sync. Separation Adj.
69 CDMRF 0~7 0 RF Vert. Count-Down Circuit Adj.
70 AFCAV 0,1 1 AV AFC Gain & Gate Adj.
71 VSUAV 0,1 0 AV Vert Sync. Separation Adj.
72 CDMAV 0~7 0 AV Vert Count-Down Circuit Adj.
73 HLVDRF 0,1 1 H Lock, V Detect RF
74 HLVDAV 0,1 1 H Lock, V Detect AV
75
VCO-SW
0,1 0 C-VCO Adj. Switch
76
VCO-ADJ
0~3 3 C-VCO Adj.
77
CROSS-BW
0~3 0 Output Pattern Picture
78
AVNCON
0~127 64 AV Blue Back Signal Contrast
79 AVNBRI 0~127 64 AV Blue Back Signal Brightness
80 POMT 0~127 25 Power Mute Time Adj.
81 CHMT 0~31 10 Channel Change Mute time Agj.
82 SYST 0~15 5
The number of times that a colour system AUTO is judged.
83 S-STE 0~3 0 Stereo/Mono Option. 0=MONO,
1=SIMPLE AV STEREO, 2,3=AV STEREO
84 VOLTBL 0~1 1 Volume Table
85 MPP 0,1 0
Multi Personal Preference function on/off
o=without M.P.P., 1=with M.P.P.
( /JE0115A)
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