Sony SLV-GA30 User manual

SLV-GA30/GA40K/GA60/GA77K/GF90K
RMT-V254/V254A
E Model
Tourist Model
SLV-GA60/GA77K/GF90K
Philippine Model
SLV-GA30/GA40K
SERVICE MANUAL
VIDEO CASSETTE PLAYER
MICROFILM
S MECHANISM
Refer to the SERVICE MANUAL ofVHS
MECHANICAL ADJUSTMENT for
MECHANICAL ADJUSTMENTS. (9-921-647-11)
SPECIFICATIONS
G
j
Photo: SLV-GA77K
RMT-V254

— 2 —
SAFETY-RELATED COMPONENTWARNING!!
COMPONENTS IDENTIFIED BY MARK !OR DOTTED LINEWITH
MARK !ON THE SCHEMATIC DIAGRAMS AND IN THE PARTS
LIST ARE CRITICAL TO SAFE OPERATION. REPLACE THESE
COMPONENTS WITH SONY PARTS WHOSE PART NUMBERS
APPEAR AS SHOWN IN THIS MANUAL OR IN SUPPLEMENTS
PUBLISHED BY SONY.
1. Check theareaofyour repair for unsoldered orpoorly-soldered
connections. Checkthe entireboard surfacefor soldersplashes
and bridges.
2. Check the interboard wiring to ensure that no wires are
"pinched" or contact high-wattage resistors.
3. Look for unauthorized replacement parts, particularly
transistors, that were installed during a previous repair. Point
them out to the customer and recommend their replacement.
4. Look for parts which, through functioning, show obvious signs
of deterioration. Point them out to the customer and
recommend their replacement.
5. Check the B+ voltage to see it is at the values specified.
6. Flexible Circuit Board Repairing
• Keep the temperature of the soldering iron around 270˚C
during repairing.
• Do not touch the soldering iron on the same conductor of the
circuit board (within 3 times).
• Be careful not to apply force on the conductor when soldering
or unsoldering.
SAFETY CHECK-OUT
After correcting the original service problem, perform the following
safety checks before releasing the set to the customer.

— 3 —
Abbreviation
MJ: E, Tourist Model
PL: Philippine Model
MODEL (SLV-) GA30 GA40K GA60 GA77K GF90K
FEATURES PL PL MJ MJ MJ
NTSC 3.58 REC/PB X/O X/O O/O O/O
NTSC 4.43 REC/PB X/X X/X O/O O/O O/O
PAL REC/PB X/X X/X O/O O/O O/O
MESECAM REC/PB X/X X/X O/O O/O O/O
NTSC PB ON PAL TV X X O O O
REC MODE NTSC X X SP/EP SP/EP SP
PAL X X SP/LP SP/LP SP
PLAY MODE NTSC SP/LP/EP SP/LP/EP SP/LP/EP SP/LP/EP SP
PAL X X SP/LP SP/LP SP
AUDIO SYSTEM MONO MONO MONO MONO Hi-Fi
KARAOKE X O X O O
KARAOKE PON X X X O O
SOUNDS IN STEREO XXXXX
SURROUND X X X O X
TAPE SPEED O X O O X
LINE IN (RCA PINS) FRONT X X X 3 3
REAR X X 2 3 3
LINE OUT(RCA PINS) FRONT X X X 3 X
REAR 22233
RF IN/OUT USA USA GK GK GK
REMOTE COMMANDER RMT-V254A RMT-V254A RMT-V254 RMT-V254 RMT-V254

— 4 —
TABLE OF CONTENTS
1. GENERAL
Step 1 Unpacking ······································································1-1
Step 2 Setting up the remote commander··································1-1
Step 3 Connecting the unit ························································1-1
Step 4 Tuning your TV to the unit·············································1-2
Playing a tape ············································································1-2
Playing/searching at various speeds ··········································1-3
Karaoke sing-along····································································1-4
Adjusting the picture (Resolution Control) ·······························1-5
Editing with another VCR ·························································1-5
Synchronised recording ·····························································1-6
Troubleshooting·········································································1-6
Index to parts and controls ························································1-7
2. DISASSEMBLY
2-1. Upper Case, Panel BlockAssembly ································2-1
2-2. FR-140, 141, 142, JK-166, MJ-91 Boards ······················2-1
2-3. Rear Panel········································································2-2
2-4. MA-336 Board ································································2-2
2-5. Mechanism Deck ·····························································2-3
2-6. Internal Views ··································································2-4
2-7. Circuit Boards Location ··················································2-5
3. BLOCK DIAGRAMS
3-1. Overall Block Diagram ···················································3-1
3-2. Video Block Diagram ······················································3-3
3-3. Servo/System Control Block Diagram ····························3-5
3-4. Audio Block Diagram ·····················································3-7
3-5. Karaoke Block Diagram ··················································3-9
3-6. Power Supply Block Diagram ·······································3-11
4. PRINTEDWIRING BOARDS AND
SCHEMATIC DIAGRAMS
4-1. Frame Schematic Diagram ··············································4-3
4-2. Printed Wiring Boards and Schematic Diagrams ············4-5
•MA-336 (Video, Audio)(1/4) Schematic Diagram ·······4-5
•MA-336 (Servo/System Control)(2/4)
Schematic Diagram ·········································4-7
•MA-336 (HiFi, Tuner)(3/4) Schematic Diagram ··········4-9
•MA-336 (Karaoke, Power Supply)(4/4)
Schematic Diagram ·······································4-11
•MA-336 (Video, Audio, Servo/System Control, Tuner,
Karaoke, Power Supply) Printed Wiring Board ··········4-13
•SR-35 (Surround) Printed Wiring Board ····················4-16
•SR-35 (Surround) Schematic Diagram ·······················4-17
•FR-142 (Mode Control) Printed Wiring Board···········4-19
•FR-142 (Mode Control) Schematic Diagram ·············4-21
•FR-140 (Power, Eject Switches)
Printed Wiring Board and
Schematic Diagram ·······································4-23
•FR-141 (Tape Operation)
Printed Wiring Board and
Schematic Diagram ·······································4-24
•MJ-91 (MIC Jack, Amp)
Printed Wiring Board and
Schematic Diagram ·······································4-25
•JK-166 (Line In/Out)
Printed Wiring Board and
Schematic Diagram ·······································4-26
5. INTERFACE, IC PIN FUNCTION
DESCRIPTION
5-1. System Control — Video Block Interface
(MA-336 Board IC201) ···················································5-1
5-2. System Control — Servo Peripheral Circuit Interface
(MA-336 Board IC201) ···················································5-1
5-3. System Control — Mechanism Interface
(MA-336 Board IC201) ···················································5-2
5-4. System Control — Audio Block Interface
(MA-336 Board IC201) ···················································5-2
5-6. Servo/System Control Microprocessor Pin Functions
(MA-336 Board IC201) ···················································5-3
6. ADJUSTMENTS
6-1 Mechanical Adjustments ·················································6-1
6-2. Electrical Adjustments·····················································6-1
2-1. Preparation before Adjustment ········································6-1
2-1-1.Equipment Required························································6-1
2-1-2.Equipment Connection ····················································6-1
2-1-3.Set-up of Adjustment ·······················································6-1
2-1-4.Alignment Tape ·······························································6-1
2-1-5.Input/Output Levels and Impedance ·······························6-2
2-1-6.Adjustment Sequence ······················································6-2
2-2. POwer Supply Check ······················································6-2
2-2-1.OutputVoltage Check (MA-336 Board) ·························6-2
2-3. Servo System Check························································6-3
2-3-1.RF Switching PositionAdjustment (MA-336 Board) ·····6-3
2-4. Audio System Adjustment···············································6-3
2-4-1.Hi-FiAudio System Adjustment (Hi-Fi model only) ······6-3
1. AF Switching Position Adjustment (MA-336 Board) ·····6-4
2-4-2.Normal Audio System Adjustment ··································6-4
1. ACE Head Adjustment ····················································6-4
2. E-E Output Level Check ·················································6-4
3. Recording Bias Check ·····················································6-4
2-5. Adjusting Parts Location Diagram ··································6-6
7. REPAIR PARTS LIST
7-1. Exploded Views ·······························································7-1
7-1-1.Front Panel and Upper Case Section ·······························7-1
7-1-2.Chassis Section································································7-3
7-1-3.Mechanism Deck Section-1·············································7-4
7-1-4.Mechanism Deck Section-2·············································7-5
7-1-5.Mechanism Deck Section-3·············································7-6
7-2. Electrical Parts List ·························································7-7

1-1
SLV-GA30/GA40K/GA60/GA77K/GF90K
SECTION 1
GENERAL This section is extracted from instruction
manual.(SLV-GF90K model)

1-2

1-3

1-4

1-5

1-6

1-7E

2-1
SLV-GA30/GA40K/GA60/GA77K/GF90K
SECTION 2
DISASSEMBLY
NOTE: Follow the disassembly procedure in the numerical order given.
2-1. UPPER CASE, PANEL BLOCK ASSEMBLY
Hooks
6 Connector
(From CN208 on
MA-336 board)
9 Connector
(From CN207 on
MA-336 board)
5 Connector
(From CN209 on
MA-336 board)
4 Flat cable
(From CN206 on
MA-336 board)
7 Flat cable
(From CN206 on
MA-335 board)
8 Flat cable
(From CN201 on
MA-335 board)
Hooks
Hooks
Hooks
2 Tapping screw
1 Tapping screw
3 Upper case
!º Panel block assembly
(Engaged by the hook.)
2-2. FR-140, 141, 142, JK-166, MJ-91 BOARDS
!™ BV sumitite (B3)
!¡ MIC jack holder
!£ MJ-91 board
2 FR-140 board
8 JK-166 board
6 FR-142 board
4 FR-141 board
Front panel assembly
1 B2.6 × 8
5 B2.6 × 8
3 B2.6 × 8
7 B2.6 × 8
!º B2.6 × 8
9

2-2
2-3. REAR PANEL
Hooks
Hooks
Hooks
3 Rear panel
(Engaged by the hook.)
2 POWER code stopper
1 BVTP 3 × 12
2-4. MA-336 BOARD
2 MA-336 board with
mechanism deck
1 Sumitite (B3) +BV

2-3
2-5. MECHANISM DECK
8 MA-336 board
7 MD base (M)
6 MD base (R)
4 MD base (R)
5 BVTP 3 × 12
3 BVTP 3 × 12
9 Mechanism deck
1
2
Three connectors

2-4
2-6. INTERNALVIEWS
—Top View —
— BottomView —
M901
Drum Assembly
DZH-91A-R 1-759-449-11
(GF90K)
DZH-89A-R 1-759-453-11
(GA60/GA77K)
DZH-71D-R 1-759-455-11
(GA30/GA40K)
FE head
1-500-144-11
Reel (S) table
3-977-507-01
FL complete assembly
A-6759-619-B
Reel (T) table
3-977-508-01
Pinch press block assembly
A-6759-615-A
ACE head block assembly
A-6759-620-A
M902
DC motor (capstan)
1-698-971-11
Rubber belt
3-977-510-01
M903
Cam motor assembly
X-3947-577-1

2-5E
2-7. CIRCUIT BOARDS LOCATION
MJ-91
(MIC JACK, AMP)
[GA40K/GA77K/GF90K]
FR-140
(POWER,
EJECT SWITCHES)
JK-166
(LINE IN/OUT)
[GA77K/GF90K]
FR-142
(MODE CONTROL)
FR-141
(TAPE OPERATION)
SR-35
(SURROUND)
[GA77K]
MA-336
VIDEO, AUDIO,
SERVO/SYSTEM CONTROL,
TUNER, POWER SUPPLY

SLV-GA30/GA40K/GA60/GA77K/GF90K
SECTION 3
BLOCK DIAGRAMS
3-1. OVERALL BLOCK DIAGRAM
3-1 3-2
MA-336 BOARD
VIDEO
LINE IN 1
CNJ801
REC P
REC/PB (RF)
SP
CH1
VIDEO
HEAD
CH1
AUDIO
HEAD
SP
CH1
VIDEO
LINE IN 2
CNJ651
BOARD
JK-166
REC/PB (RF) V1 V2
GA77K/GF90K MODEL
CH2
AFM
REC/PB
AMP
IC302
AFM
REC/PB
HEAD
FULL
ERASE
HEAD
ERASE
HEAD
BIAS
OSC BIAS
OSC
Q405,406
T401
Q401-404
AF SWP REC RF PB RF AUDIO
PROCESSOR
(HIFI)
IC301
L1
R1
L2
R2
AF ENV
SDA/SCL
JS904 JS905
JS907
JS902 JS910
NA OUT NA IN
R1
L1
CNJ651
BOARD
JK-166
L2
GA77K/GF90K MODEL
AUDIO
LINE IN 1
CNJ801 L
R
AUDIO
LINE IN 1
L
R
1
MCJ501
MIC IN
2
MCJ502
IC501
MIC 1 MIC 2
MJ-91 BOARD
GA40K/GA77K/GF90K MODEL
IC501
KARAOKE
S501
ECHO
FR-142 BOARD
MIC KARAOKE PON KR SW/ECHO VR
R2
INPUT
SELECTOR
IC751
IC752
GA77K/GF90K MODEL
GA77K MODEL
AUDIO
PROCESSOR
(NORMAL)
IC101
(2/2)
IC581
GA40K/ GA77K/ GF90K MODEL
JS908
JS906
VIDEO
REC/PB AMP
Y/C PROC.
IC101
(1/2)
CSYNC
V ENV QVD
MESECAM
OSD
Q224,225
IC201
(1/2)
EXCEPT GA30/GA40K MODEL
VIDEO
LINE OUT1
CNJ801
BOARD
JK-166
CNJ651
EXCEPT GA30/GA40K MODEL
AUDIO
LINE OUT2
L
R
Q801
BUFF
VIDEO
LINE OUT2
GA77K MODEL
AUDIO
LINE OUT1
L
R
CNJ801
RFU801
VIDEO
TV/VTR AUDIO OUT
IN
SR-35 BOARD
IC703
VOCAL
CANCEL SURR(B) KARAOKE
PROC.
/SRAM
IC701
SS/
SURR(A)
IC702 IC503
IC502
GA77K/GF90K MODEL
GA77K MODEL
AMS
V DATA / V CLK
IC201
(2/2)
MESECAM
DRUM
SERVO
T REEL
FG
PH202
CAPSTAN
SERVO
SYSTEM
CONTROL
V DATA / V CLK
QVD
V ENV
CSYNC
AMS
SDA / SCL
AF ENV
AF SWP
REC P
SIGNAL
CONTROL
S REEL
FG
PH201
T
SENS
Q201
S
SENS
Q202
RESET
IC203
TE/LED
S SENS
T SENS
T REEL
S REEL
MD BLOCK
DRUM
FG/PG
CAM
MOTOR
DRIVE
IC202
M
DRUM
MOTOR
CAPSTAN
FG
M
CAPSTAN
MOTOR
CTL
HEAD
CAM
ENCODER
M
CAM
MOTOR
S201
FUNCTION
KEY
S601,602
LED
DRIVE
D601
EXCEPT GA30/GA40K MODEL
FR-142 BOARD
VIRTUAL
SOUND
S603
LINE
SELECT
S615
COLOR
SYSTEM
S605
NTSC
PB
S610
GA77K MODEL
REMOTE
CONTROL
RECEIVER
IC601
D608 D603-607 D609 D610-612 D613 D614 D615,616
GF90K MODEL EXCEPT GA30/GA40K MODEL GA30/GA40K MODEL GA77K MODEL
Q601 Q602
BOARD FR-141
FR-140 BOARD
DRUM DA
DRUM FG/PG CAP RVS CAP FG CTL MODE1-4
EXCEPT GA30/GA40K MODEL
FUNCTION
KEY
S606-609
S620
D602
LED POWER
KEY1
KEY2 SYNC REC KEY(4)
KEY(2) KEY(1)
FUNCTION
KEY
S611-614
PAUSE
S204
LED
DRIVE
Q207-209
Q211-213
Q233 GA30/GA40K MODEL
GF90K MODEL
REC
S203
KEY4 ADJ-A KEY3 ADJ-BADJ-B
RMC
GA77K/GF90K MODEL
16
GF90K MODEL
EXCEPT GA30/GA40K MODEL EXCEPT GA30/GA40K MODEL
(SEE PAGE 4-5, 7, 9, 11)
(SEE PAGE 4-26)
(SEE PAGE 4-26)
(SEE PAGE 4-25)
(SEE PAGE 4-21)
(SEE PAGE 4-17)
(SEE PAGE 4-26)
(SEE PAGE 4-23)
(SEE PAGE 4-24)
(SEE PAGE 3-21)
JS931
JS932
GF90K MODEL
JS930
JS929
GA77K MODEL
GA60 MODEL
JS901
JS925
JS926
GF90K MODEL
JS927
JS928
GA30/ GA60 MODEL
GA30/ GA40K/ GA60 MODEL
GF90K MODEL GA30/
GA60 MODEL
EXCEPT GA77K MODEL
GA30/ GA40K/ GA77K MODEL
GA77K MODEL
EXCEPT GA30/GA40K MODEL EXCEPT GA30/GA40K MODEL
JS921
JS922
GA77K MODEL

SLV-GA30/GA40K/GA60/GA77K/GF90K
3-2. VIDEO BLOCK DIAGRAM
3-3 3-4
BOARD
JK-166
1
CNJ801
CN651
DRUM
VIDEO
HEAD
SP
CH1
SP
CH2
CN102 89
88 86 87
SP1
5
2 1
6
VIDEO
IN 1
V IN2
MA-336 BOARD
IC101
SP2
SP1
SP2 VCA
SW30
SW29
SP SP
REC
MUTE
79 7881
DRUM FF
Q102
BUFF
3
2
CN101
V SW P PB RF
FOR
CHECK VIDEO
REC/PB AMP
Y/C PROCESSOR
N.L.
DE EMPH
ENV
DET
HPF
REC
MUTE
97
SW28
84
SW27
SW20
HPF
P
R
SW19
SEP
COMP
ACC
LPF
CTL TRAP
fH HPF
SW18
P
RTRAP SW24
P
R
PR
SW7
629
TRAP
FM
AGC
P EQ
MMS
DL
SW8
VIDEO
AGC
ATT
(-10dB)
ATT
(-10dB)
ATT
(-10dB)
1
CNJ651
VIDEO
IN 2
31
30 28
CN202
1/2 2FL
VCO 4 PHASE
GEN
MAIN
CONV.1
MAIN
CONV.2
SW21
R
P
C
LPF
C
LPF
R
P
R
P
SW23 SW22
MIX
LEVEL C.K B.E
DL
R
DL P
R
P
SW25 SW26
VCA
CCD
LPF
B.D CK
NP
G EQ DLIM DEMO SUB
LPF
1M
HPF 7M
LPF LPF FM
MODE MAIN EMPH
CARRIER
OFFSET W.C/DC
MAIN
DE-EMPH
SW10
P
R
SW5
Y
LPF
SW13
P
R
SW11
R
P
D.E. N.C.
N.L.
EMPH
FBC/
ALC
SW17 R
RP CLP
Y NR
SW14
DO
DO REC
CLP
58 60 23
35 46 24 LPF
C
CCD
26 39
Y
CCD
4221
44
CLOCK
SYNC
SEP 50
PB
APC
CR DET
2fSC
X-TAL
VCO/OSC
PULSE
GEN.
REC
APC
REC
AFC
76717375
X101
4.43MHz X102
3.58MHz
Q101Q101
16
Q104 Q103
SHARPNESS
CONT
Q217-219
191718
Q204
PAL
69
5455 6dB
AMP C
SQUELCH 6dB
AMP
CLEAR
SYNC
SQUELCH
VIDEO
ALC
52 51
63 62
SERIAL
CONT
64
KILL
Q215,216
BUFF
2fSC
AMP
Q205,214
43
BOARD
JK-166
3
CNJ801
VIDEO
OUT 1
V OUT2
3
CNJ652
VIDEO
OUT 2
CN651
CN202
53 52
OSD 45
IC201
(1/3)
Q801
BUFF
Q224,225
AUDIO
2
TV/VTR
4
VIDEO
1
RFU801
IN
OUT
16
RF SW P IC201 24 TO/FROM
SYSCON
BLOCK
C SYNC IC201 54
V ENV IC201 13
MESECAM IC201 80 QVD IC201 27
TO/FROM
SYSCON
BLOCK
V DATA IC201 100
V CLOCK IC201 99
KILL IC201 19 SHARP 1 IC201 20 SHARP 2 IC201 29 SHAPNESS IC201 94 NTSC IC201 18
RFU AUDIO
FROM
AUDIO
BLOCK
EXCEPT GA30/GA40K MODEL
GA77K MODEL
GA77K/GF90K MODEL
EXCEPT GA30/GA40K MODEL
CN101 3REC/PB
CN101 2PB
IC101 *§ *ªREC
IC101 !• REC/PB
IC101 @¡ REC/PB
IC101 #∞ REC/PB
IC101 #ª REC/PB
IC101 $¢ REC/PB
IC101 $§ REC/PB
IC101 $™ REC/PB
5Vp-p
25Hz
0.1V/div 0.2µsec/div
0.5V/div 0.1µsec/div
REC:0.4Vp-p
PB:0.48Vp-p
REC:0.41Vp-p
PB:0.6Vp-p
REC:0.4Vp-p
PB:0.5Vp-p
REC:0.28Vp-p
PB:0.35Vp-p
REC:2.2Vp-p
PB:2.3Vp-p
REC:0.5Vp-p
PB:0.6Vp-p REC:0.35Vp-p
PB:0.38Vp-p
REC:0.28Vp-p
PB:0.35Vp-p
0.4Vp-p
0.58Vp-p
H
H
H
HH
H
0.45Vp-p
8.8671MHz
IC101 %º REC/PB
IC101 %™ REC/PB
IC101 %∞ PB
IC101 %• REC/PB
IC101 ^º REC/PB
IC101 ^ª REC/PB
IC101 &¡ REC/PB
IC101 &£ REC/PB
IC101 &∞ REC/PB
4.6Vp-p
H
H
H
H
H
8.667MHz 0.46Vp-p
0.1Vp-p
3.579545MHz
4.433619MHz
4.433619MHz
0.66Vp-p
0.54Vp-p
(SEE PAGE 4-5)
(SEE PAGE 4-26)
(SEE PAGE 4-26)
(SEE PAGE 3-8)
(SEE PAGE 3-5)
(SEE PAGE 3-5)
IC201 $£$∞ REC/PB
2Vp-p
H
IC201 %£ REC/PB
2.6Vp-p
8.86716MHz

SLV-GA30/GA40K/GA60/GA77K/GF90K
3-3. SERVO/SYSTEM CONTROL BLOCK DIAGRAM
3-5 3-6
DRUM MOTOR
OUTPUT
HALL
DEVICE
CAPSTAN MOTOR
M901
M902
HALL
DEVICE
U+
OUTPUT
MATRIX
M
VCC 7
1 5 3
PG
FG
CAPSTAN
FG
U- V+ V- W+ W- U
LIMITER
D5V
V W
VM
VCC
TL 1
6
5
2 3 71
6
5
2 3 7CN205
D5V
CAP VS CAP RVS CAP FG
7 1 5 3
CN204
M12V
D5V
D VS D PG D FG
6CN401 5
CTL
HEAD
CN203
M
CAM
MOTOR
CAM
ENCODER
MECHA
POSITION
(
(
MODE1 MODE2 MODE3 MODE4
IC201
SERVO CONTROL
(2/3)
DRUM DA
26
DRUM PG
39
DRUM FG
38
CAP QR
96
CAP VS
25
CAP RVS
55
CAP FG
40
CTL IN+
CAM
MOTOR DRIVE
IC202
CAM+
10
CAM-
24
IN2
IC201
SYSTEM CONTROL
(3/3)
S REEL FG
PH202
T REEL
FG
LED
DRIVE
Q203
T REEL FG 10M IN
M12V
PH201
S REEL
FG
T/S LED
D203
T SENS S SENS
T/E LED
Q201
TAKE END
SENSOR
M12V
Q202
SUPPLY END
SENSOR
REC PRF 10M OUT
X201
10MHz
REC
PROOF
S202
CAM
MODE1 MODE2 MODE3 MODE4
16
4 4 CTL REF
CTL IN-
RESET 8
IC203
12V RESET
D5V
D5V
CAP PWM
66
16713 5V
REG
IC204
88 89 12 11 74
1
72 73 31 32 95 62 63 64 65
3 1
A SWP ADJ
9
V SWP ADJ
8
5V 5V
A SWP
ADJ
RV201
V SWP
ADJ
RV202
GF90K MODEL
67
POWER LED
V ENV
13 RF SWP 24
TV/VTR
80 QVD 27
V DATA
100 C SYNC
54
V CLK
99 KILL IN 19
SHARP 2
29 SHARP 1 20
SHARPNESS VR
94 NTSC 18
AU MUTE
21
AMS
58
PB
90 LINE 1 91
AF CLK
97 AF DATA 98
A ENV
14 AF SWP 23 REC P 17
RF SWP
IC101 81 V ENV
IC101 84 MESECAM DET
,Q220 CQVD
IC101 51
C SYNC
IC101 50 V DATA IC101 63 V CLOCK IC101 62 KILL IC101 64
SHARP 1
Q217 BSHARP 2
Q218 BSHARPNESS
IC101 17 NTSC
,Q204 B
AMS
Q581 C
A MUTE
IC101 99 PB
Q751 BLINE 1
Q752 B
SDA
IC301 41 SCL
IC301 42 AF ENV IC301 39
REC P
IC302 5AF SWP
,IC301 40IC302 1
TO/FROM
VIDEO
BLOCK
TO/FROM
AUDIO
BLOCK
POWER ON IC502 4TO
KARAOKE
BLOCK
3KEY 1 4
KEY 2
4 1
CN207
LED POWERLED POWER
KEY 1
4 1
CN605
ON
STANDBY EJECT
S602
S601
33
KEY (1)
POWER
ON
Q602
POWER
ON
Q601 D601
FR-140 BOARD
MA-336 BOARD
FR-141 BOARD
1 2
KEY (1)
CN210
TEST
STOP
S606 PLAY
S607 FF
S608
SYNC
REC
S620
REW
S609 D602
+5V
CN604
1 3 4 5
1 3 4
5
CN208
KEY (2)
KEY (4)
SYNC REC
KEY 2
86SYNC REC
EXCEPTGA30
LED
DRIVE
Q210
11 CN601
FR-142 BOARD
12
VIRTUAL
SOUND
S603
13
LINE 1 LINE 2
AUTO
PAL/MESECAM
NTSC
NTSC 3.58 NTSC 4.43
ON PAL TV
14
LINE
SELECT
S615
COLOR
SYSTEM
S605
NTSC
PB
S610
GA77K/GF90K MODEL
GA77K MODEL
7CN602 5
AUTO/
MANUAL
S611
ON SCREEN
DISPLAY
S612 SP SP/EP
EP S614
PICTURE
CONTROL
S613
6
5 4 3 2
KEY (4)
KEY 4
KEY (1) KEY (2)
CN208
PAUSE
S204
6
KEY 4
5
KEY 3
87
SHARP LED
REC
S203
LED
DRIVE
Q207-209 Q211-213
Q233
MODE1 MODE2 MODE3 MODE4
92
ADJ-A 93 ADJ-B
56
TRACK LED 84
L LED 83
HF LED 85
R LED
81
REC LED 57 C IN LED
79
DNS 5 LED
REMOTE
CONTROL
RECEIVER 21
IC601
13
+5V
82REMOCON
2 3
10 11 12
9 8
7
5
6
13
2 3
10 11 12
9 8
CN201
CN206
KEY 3
ADJ-A ADJ-B
REMOCON
SHARPNESS LED
TRACKING LED
L LED
HIFI LED
R LED
DNS 5 LED DNS 4 LED
14 CN601
CN201
13 15 12 11
9 8
2 3 1 4 5 7 8
78DNS 4 LED 77DNS 3 LED 76DNS 2 LED 75DNS 1 LED
REC LED
CASSETTE LED
TV/VTR LED
DNS 3 LED DNS 2 LED
SURROUND LED
DNS 1 LED
7DEST 2
61
SUR CONT 3 60
SUR CONT 2 59 SUR CONT 1 GA77K MODEL
LED
DRIVE
Q221,222,226
TV
OTHER TV
SYSTEM
S801
6
5
4
SR-C1
CN702
SR-35 BOARD
TO
SURROUND
BLOCK
CN701
SR-C2 SR-C3
D608
D603-607
D609
D610-612
D613 D614
D615,616
GF90K MODEL EXCEPT GA30/GA40K MODEL
EXCEPT GA30/GA40K MODEL
EXCEPT GA30/GA40K MODEL EXCEPT GA30/GA40K MODEL
GA30/GA40K MODEL GA77K MODEL
EXCEPT GA30/GA40K MODEL
GF90K MODEL GA30/GA40K MODEL
RFU801 4
IC101 18
GA77K/GF90K MODEL
GF90K MODEL
(SEE PAGE 4-7)
(SEE PAGE 3-10)
(SEE PAGE 4-23)
(SEE PAGE 4-24)
(SEE PAGE 4-21)
(SEE PAGE 3-9)
(SEE PAGE 3-8)
(SEE PAGE 3-4)
SW
Q250, 251
CN201 KR SW/
ECHO VR
FROM KARAOKE BLOCK 7
(SEE PAGE 3-10)
IC201 @£@¢ REC/PB
5Vp-p
25Hz
IC201 @∞ REC/PB
5Vp-p
1.18MHz
IC201 @§ REC/PB
5Vp-p
0.88MHz
IC201 #¡ REC
3.1Vp-p
25Hz
IC201 #™ REC
3.1Vp-p
25Hz
IC201 #• REC/PB
4Vp-p
600Hz
IC201 #ª REC/PB
4.1Vp-p
25Hz
IC201 $º REC/PB
758Hz 4.6Vp-p
IC201 %¢ REC/PB
H4Vp-p
IC201 &™ REC/PB
3.2Vp-p
10MHz

SLV-GA30/GA40K/GA60/GA77K/GF90K
3-4. AUDIO BLOCK DIAGRAM
3-7 3-8
BOARD
JK-166
4
CN651
L2 R
CN202
R
L
MA-336 BOARD
3 8 4CN260
DRUM AUDIO
HEAD
CH1 CH2
17
IC302
AFM
REC/PB
AMP
18 24 20
AGC
DET
11
16
VCC 3
9 1
H SW
5
REC
CA
HA HA
REC ON
EP
SP
AGC
AMP
PB ON
VCC
1
CN101
HF ADJ
FOR
CHECK
36 37 AGC
AMP
VCO
HF
LPF
PNR
L
MUTE
OUTPUT
INPUT SEL
LEVEL
DET
VCO
HF
LPF
PNR
L
15 14
MUTE
16 17
NORMAL IN
NORMAL OUT
21
20
FM PB
FM REC
IC301
AUDIO
PROCESSOR
(HIFI)
39 5 6 3 4
SCL
42
SDA
41
AF SWP
40
AGC
R
L
CNJ801
AUDIO
LINE IN 1
R
L
6
L2 L 4
6
BIAS
ERASE
OSC
Q401-404
CN401
1
2
4
ERASE
AUDIO
REC/PB
HEAD
NOMAL
AUDIO
1
FULL
HEAD CN402
HEAD
SEL
16
5
CNJ651
AUDIO
LINE IN 2
EXCEPT GA30/GA40K MODEL
EXCEPT GA30/GA40K MODEL
GA77K/GF90K MODEL
ERASE
HEAD
BIAS
SWITCH
Q405,406
T401
12 14 15 11
13
1 5 2 4
3
IC751
INPUT SEL
10 9
5 3
7 1
IC752
Q753
BUFF
Q751
SW
Q752
SW
GA77K MODEL
C759
C760
9 2
P
R
SP ON
VCA 11
REC
EQ
99
4
100
IC101
AUDIO
PROCESSOR
(NORMAL)
(2/2)
JS904
JS907
JS910
JS902
BOARD
JK-166
9
CN202
L2 R
CN651 R
L
11
L2 L
9
11
CNJ652
AUDIO
LINE OUT2
GA77K MODEL
JS905
JS906
JS908 CNJ801
AUDIO
LINE OUT1
EXCEPT GA30/GA40K MODEL
1
CN702
RFU AUDIO RFU801 2
MIC RF Q502 E LINE OUT R IC502 2 LINE OUT L IC502 1 LINE IN L IC502 5 LINE IN R IC502 6
TO/FROM
KARAOKE
BLOCK
SR-35 BOARD
TO/FROM
SURROUND
BLOCK
CN701
FROM
VIDEO
BLOCK
2
SR-L OUT
SR-L IN 9
10
SR-R OUT
SR-R IN
Q410
BUFF
MUTE
IC581
AMS Q581
BUFF
TO/FROM
SYSCON
BLOCK
AMS IC201 58
A MUTE IC201 21
PB IC201 90 LINE 1 IC201 91 SDA IC201 98 SCL IC201 97 AF ENV IC201 14 AF SW P IC201 23 REC P IC201 17
GA77K/GF90K MODEL
GA77K/GF90K MODEL
GA77K MODEL
JS921
JS922
JS901
GA60 MODEL
GA77K MODEL
GF90K MODEL
JS926
JS925
JS928
JS927
JS932 JS931
GA77K MODEL
GA30/GA40K/GA77K MODEL
GA30/GA60 MODEL
GF90K MODEL
EXCEPT GA77K MODEL
GF90K MODEL
GF90K MODEL
GA30 /GA40K /GA60 MODEL
GA30/ GA60 MODEL
JS929
JS930
GA77K MODEL
C761
C762
GF90K MODEL
GA77K/GF90K MODEL
(SEE PAGE 4-9)
(SEE PAGE 4-26)
(SEE PAGE 3-5)
(SEE PAGE 3-9, 10)
(SEE
PAGE
3-10)
(SEE PAGE 3-4)
(SEE PAGE 4-26)