Sony SLV-GA30, SLV-GF80, SLV-GF90K, SLV-GF99k, SLV-P66 Service Manual
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GF80/GF90K/GF99K/P66/PH99
RMT-V254/V254A
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SERVICE MANUAL
Ver 1.0 1998.10
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S MECHANISM
Refer to the SERVICE MANUAL of VHS
MECHANICAL ADJUSTMENT
MECHANICAL ADJUSTMENTS. (9-921-647-11)
Photo: SLV-GF99K
RMT-V254
for
SPECIFICATIONS
East European Model
SLV-P66/PH99
ME Model
SLV-GA30/GA50/GA66/GF99K
Philippine Model
SLV-GA77K/GF99K
E Model
SLV-GA30/GA50/GA70K/
GA77K/GF80/GF90K/GF99K
TEL 13942296513 QQ 376315150 892498299
Thai Model
SLV-GA30/GA50/GA70K/
GA77K/GF80/GF90K/GF99K
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MICROFILM
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VIDEO CASSETTE PLAYER
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SAFETY-RELATED COMPONENT WARNING!!
COMPONENTS IDENTIFIED BY MARK ! OR DO TTED LINE WITH
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 the area of your repair for unsoldered or poorly-soldered
connections. Check the entire board surface for solder splashes
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.
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After correcting the original service problem, perform the following
safety checks before releasing the set to the customer.
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SAFETY CHECK-OUT
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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
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• Be careful not to apply force on the conductor when soldering
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MODEL (SLV-) GA30 GA50 P66 GA66 GA70K
FEATURES ME SG PS TK ME SG PS TK EE ME PS TK
NTSC 3.58 REC/PB X/X O/O O/O O/O O/O
NTSC 4.43 REC/PB X/O O/O O/O O/O O/O
PAL REC/PB X/O O/O O/O O/O O/O
MESECAM REC/PB X/O O/O O/O O/O O/O
NTSC PB ON PAL TV OOOOO
REC MODE NTSC X SP/EP SP SP SP/EP SP
PAL X SP/LP SP SP SP/LP SP
PLAY MODE NTSC SP/LP/EP SP SP/LP/EP SP SP SP/LP/EP SP
PAL SP/LP SP SP/LP SP SP SP/LP SP
AUDIO SYSTEM MONO MONO MONO MONO MONO
KARAOKE X X X X O
KARAOKE PON X X X X X
SOUNDS IN STEREO XXXXX
SURROUND X X X O X
TAPE SPEED O X O X X O X
LINE IN (RCA PINS) FRONT X X X 3 X
REAR X 2 2 3 2
LINE OUT(RCA PINS) FRONT X X X 3 X
REAR 2 2 2 3 2
RF IN/OUT GK GK GK GK GK
REMOTE COMMANDER RMT-V254A RMT-V254 RMT-V254 RMT-V254 RMT-V254
MODEL (SLV-) GA77K GF80 PH99 GF90K GF99K
FEATURES PS TK PL PS TK EE PS TK ME PS TK PL
NTSC 3.58 REC/PB O/O O/O O/O O/O O/O
NTSC 4.43 REC/PB O/O X/X O/O O/O O/O O/O X/X
PAL REC/PB O/O X/X O/O O/O O/O O/O X/X
MESECAM REC/PB O/O X/X O/O O/O O/O O/O X/X
NTSC PB ON PAL TV OXOOO O X
REC MODE NTSC SP SP SP SP SP SP/EP
PAL SP X SP SP SP SP X
PLAY MODE NTSC SP SP SP SP SP SP/LP/EP
PAL SP X SP SP SP SP X
AUDIO SYSTEM MONO Hi-Fi Hi-Fi Hi-Fi Hi-Fi
KARAOKE O X X O O
KARAOKE PON O X X O O
SOUNDS IN STEREO XXXX O
SURROUND O X X X O
TAPE SPEED X O X X X X O
LINE IN (RCA PINS) FRONT 3 3 3 3 3
REAR 3 3 3 3 3
LINE OUT(RCA PINS) FRONT 3 X X X 3
REAR 3 3 3 3 3
RF IN/OUT GK USA GK GK GK GK USA
REMOTE COMMANDER RMT-V254 RMT-V254 RMT-V254 RMT-V254 RMT-V254
Abbreviation
SG: Gulf Model EE: East European Model
PS: Pan Asia Model PL: Philippine Model
TK: Thai Model
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TABLE OF CONTENTS
1. GENERAL
Step 1 Unpacking ······································································1-1
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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
Enjoying the surround sound (Virtual Surround)
(SLV-GF-99KME/PS only) ·············································1-5
Adjusting the picture (Resolution Control) ······························· 1-5
Editing with another VCR ·························································1-6
Synchronised recording ·····························································1-6
Troubleshooting·········································································1-7
Index to parts and controls ························································ 1-7
TEL 13942296513 QQ 376315150 892498299
2. DISASSEMBLY
2-1. Upper Case, Panel Block Assembly ································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 Vie ws·································································· 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
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4. PRINTED WIRING 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)
•MA-336 (HiFi, Tuner)(3/4) Schematic Diagram ··········4-9
•MA-336 (Karaoke, Power Supply)(4/4)
•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)
•FR-141 (Tape Operation)
•MJ-91 (MIC Jack, Amp)
•JK-166 (Line In/Out)
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Schematic Diagram ·········································4-7
Schematic Diagram ·······································4-11
Printed Wiring Board and
Schematic Diagram ·······································4-23
Printed Wiring Board and
Schematic Diagram ·······································4-24
Printed Wiring Board and
Schematic Diagram ·······································4-25
Printed Wiring Board and
Schematic Diagram ·······································4-26
5-2. System Control — Servo Peripheral Circuit Interface
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(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.Output Voltage Check (MA-336 Board) ·························6-2
2-3. Servo System Check························································ 6-3
2-3-1.RF Switching Position Adjustment (MA-336 Board) ·····6-3
2-4. Audio System Adjustment···············································6-3
2-4-1.Hi-Fi Audio 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
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7-1. Exploded Vie ws ·······························································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
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5. INTERFACE, IC PIN FUNCTION
DESCRIPTION
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5-1. System Control — Video Block Interface
(MA-336 Board IC201)···················································5-1
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SLV-GA30/GA50/GA66/GA70K/GA77K/GF80/GF90K/GF99K/P66/PH99
SECTION 1
GENERAL
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This section is extracted from instruction
manual.(SLV-GF90K/GF99K model)
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SLV-GA30/GA50/GA66/GA70K/GA77K/GF80/GF90K/GF99K/P66/PH99
SECTION 2
DISASSEMBLY
NOTE: Follow the disassembly procedure in the numerical order given.
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2-1. UPPER CASE, PANEL BLOCK ASSEMBLY
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(From CN201 on
MA-335 board)
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Connector
(From CN207 on
MA-336 board)
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7
(From CN206 on
MA-335 board)
Flat cable
Hooks
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Flat cable
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0
T apping screw
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Upper case
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Flat cable
(From CN206 on
MA-336 board)
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T apping scre
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Panel block assembly
(Engaged by the hook.)
Hooks
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2-2. FR-140, 141, 142, JK-166, MJ-91 BOARDS
!™
BV sumitite (B3)
!£
MJ-91 board
!¡
MIC jack holder
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FR-140 board
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B2.6 × 8
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!º
Hooks
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B2.6 × 8
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Hooks
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(From CN208 on
MA-336 board)
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B2.6 × 8
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Connector
(From CN209 on
MA-336 board)
Connector
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JK-166 board
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B2.6 × 8
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2-3. REAR PANEL
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Rear panel
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Hooks
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POWER code stopper
2-4. MA-336 BOARD
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BVTP 3 × 12
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Sumitite (B3) +BV
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MA-336 board with
mechanism deck
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m
Q
2-5. MECHANISM DECK
7
Q
3
6
3
9
Mechanism deck
1
3
BVTP 3 × 12
5
1
5
0
Three connectors
2
9
8
5
BVTP 3 × 12
2
4
9
8
1
2
9
9
TEL 13942296513 QQ 376315150 892498299
TEL
13942296513
4
MD base (R)
Q
Q
6
MD base (R)
3
7
7
5
1
3
6
8
MA-336 board
MD base (M)
1
5
0
8
9
2
4
9
8
2
9
TEL 13942296513 QQ 376315150 892498299
9
w
w
w
.
xia
o
y
u
1
6
3
2-3
.
c
o
m
2-6. INTERNAL VIEWS
7
Q
Q
— T op View —
TEL 13942296513 QQ 376315150 892498299
3
FE head
1-500-144-11
Reel (S) table
3-977-507-01
6
M901
Drum Assembly
DZH-78A-R 1-759-183-11
(GA30:PS,TK/GA50:PS,TK/GA70K:PS,TK/GA77K:PS,TK/P66)
DZH-91A-R 1-759-449-11
(GF80:PS,TK/GF90K:PS,TK/GF99K:ME,PS,TK/PH99)
DZH-90A-R 1-759-451-11
(GF99K:PL)
DZH-89A-R 1-759-453-11
(GA30:SG,ME/GA50:SG,ME/GA66:ME)
DZH-71D-R 1-759-455-11
(GA77K:PL)
3
1
5
1
5
0
Abbreviation
SG: Gulf Model EE: East European Model
PS: Pan Asia Model PL: Philippine Model
TK: Thai Model
ACE head block assembly
A-6759-620-A
2
9
8
Pinch press block assembly
A-6759-615-A
Reel (T) table
3-977-508-01
4
9
8
2
9
9
TEL 13942296513 QQ 376315150 892498299
TEL
— Bottom View —
13942296513
M902
DC motor (capstan)
1-698-971-11
Q
Q
FL complete assembly
A-6759-619-B
3
7
6
3
1
5
1
8
0
5
Rubber belt
3-977-510-01
9
2
4
9
8
2
9
9
w
w
w
.
xia
o
y
u
1
6
M903
Cam motor assembly
X-3947-577-1
2-4
3
.
c
o
m
Q
2-7. CIRCUIT BOARDS LOCATION
Q
3
7
6
3
1
5
1
5
0
8
9
2
4
9
8
2
9
9
MJ-91
(MIC JACK, AMP)
[GA70K/GA77K/GF90K/GF99K]
FR-140
(POWER,
EJECT SWITCHES)
TEL 13942296513 QQ 376315150 892498299
JK-166
(LINE IN/OUT)
[GA66/GA77K/GF80/
GF90K/GF99K/PH99]
FR-142
(MODE CONTROL)
FR-141
(TAPE OPERATION)
MA-336
VIDEO, AUDIO,
SERVO/SYSTEM CONTROL,
TUNER, POWER SUPPLY
TEL 13942296513 QQ 376315150 892498299
SR-35
(SURROUND)
[GA66/GA77K/GF99K]
TEL
13942296513
Q
Q
3
7
6
3
1
5
1
5
0
8
9
2
4
9
8
2
9
9
w
w
w
.
xia
o
y
u
1
6
3
2-5E
.
c
o
m
SECTION 3
BLOCK DIAGRAMS
3-1. OVERALL BLOCK DIAGRAM
MIC 1
MIC 2
7
IC101
VIDEO
REC/PB AMP
Y/C PROC.
GF80/GF90K/GF99K/PH99 MODEL
IC301
AUDIO
PROCESSOR
(HIFI)
L1R1L2
R2
3
9
IC501
S501
KARAOKE
ECHO
AF ENV
4
.
6
(1/2)
SDA/SCL
MESECAM
V DATA / V CLK
QVD
V ENV
CSYNC
L1
R1
RF
NA IN
NA OUT
GF90K
/GF99K
2
GF90K/GF99K MODEL
MIC
KARAOKE PON
KR SW/ECHO VR
3
JS901
2
GA50/GA70K/P66
MODEL
IC751
INPUT
SELECTOR
GA66/GA77K
x
IC201
Q224,225
9
T401
Q401-404
BIAS
OSC
3
(SEE PAGE 4-5, 7, 9, 11)
IC302
PB RF
REC RF
AFM
REC/PB
AF SWP
AF SWP
AMP
REC P
EXCEPT
GA30
Q405,406
1
BIAS
OSC
JS921
JS922
GA66/GA77K
(SEE PAGE 4-25)
w
(SEE PAGE 4-21)
FR-142 BOARD
16
Q
TEL 13942296513 QQ 376315150 892498299
GF80/GF90K/GF99K/PH99
Q
VIDEO
HEAD
SP
CH1
SP
CH1
CNJ801
VIDEO
LINE IN 1
GA66/GA77K
GF80/GF90K/GF99K/PH99 MODEL
CNJ651
VIDEO
LINE IN 2
AUDIO
HEAD
CH1
CH2
AFM
REC/PB
HEAD
ERASE
HEAD
T
MCJ501
1
MCJ502
2
E
L
R
L
R
FULL
ERASE
HEAD
CNJ801
AUDIO
LINE IN 1
CNJ651
AUDIO
LINE IN 1
GA66/GA70K/GA77K
MIC IN
w
GA70K/GA77K/GF90K/GF99K
MA-336 BOARD
REC/PB (RF)
REC/PB (RF)
V1
(SEE PAGE 4-26)
JK-166
BOARD
V2
L
EXCEPT
GA30
(SEE PAGE 4-26)
JK-166
BOARD
L2
R2
MJ-91 BOARD
IC501
w
1
(1/2)
OSD
EXCEPT
GA77K:PL/GF99K:PL
JS929
JS930
6
IC752
GA66/GA77K MODEL
i
GA66/
GA77K
5
a
5
GF90K/GF99K
JS931
JS932
GA30/GA50/GA66/P66
IC101
AUDIO
PROCESSOR
(NORMAL)
1
3
o
1
GF80/PH99
JS903
JS902
JS910
GA30/GA50/
GA70K/P66
(2/2)
GA40K/GA70K/GA77K
GF90K/GF99K MODEL
IC752
AMS
y
5
GF80/GF90K/PH99
JS904
JS905
GA30/GA66/
GF90K/P66
u
0
GA30/GA50/
GA66/GF80/
P66/PH99
JS908
JS909
GA66/GF80/PH99
JS906
JS907
GA66/GF90K
Q
GA66/GA77K/GF99K MODEL
GA66 MODEL
JS701
JS702
IC701
VOCAL
CANCEL
GA77K/GF99K MODEL
1
EXCEPT GF80/GF90K/
GF99K/PH99
Q
SR-35 BOARD
(SEE PAGE 4-17)
IC702 IC503
SS/
SURR(A)
6
Q801
BUFF
JS927
JS928
GA66/GA77K
IC703
SURR(B)
JK-166
BOARD
3
GF90K/GF99K
JS926
3
EXCEPT
GA30 MODEL
7
JS925
VIDEO
TV/VTR
AUDIO
SLV-GA30/GA50/GA66/GA70K/GA77K/GF80/GF90K/GF99K/P66/PH99
9
2
MD BLOCK
DRUM
M
MOTOR
DRUM
FG/PG
CAPSTAN
M
MOTOR
CAPSTAN
FG
M
MOTOR
CAM
S201
ENCODER
Q601
Q602
LED
DRIVE
S601,602
FUNCTION
KEY
S606-609
S620
FUNCTION
KEY
8
S615
LINE
SELECT
S603
VIRTUAL
SOUND
GA66
GA77K/GF99K
S611-614
FUNCTION
KEY
IC601
REMOTE
CONTROL
RECEIVER
9
CTL
HEAD
CAM
EXCEPT
GA77K:PL/GF99K:PL
D601
FR-140 BOARD
(SEE PAGE 4-23)
EXCEPT
GA30 MODEL
D602
9
2
(SEE PAGE 4-24)
GA66/GA77K/GF80/
GF90K/GF99K/PH99
D603-607
D608
D609
D610-612
D613
D614
D615,616
9
FR-141
9
BOARD
S610
NTSC
PB
EXCEPT
GA77K:PL/GF99K:PL
S605
COLOR
SYSTEM
EXCEPT
GA77K:PL/GF99K:PL
EXCEPT GA30
GF80/GF90K/GF99K/PH99
GA30:PL/GA40K/GA77K:PL/GF99K:PL
GA66/GA77K/GF99K MODEL
FR-142 BOARD
(SEE PAGE 3-21)
8
CNJ801
VIDEO
LINE OUT1
(SEE PAGE 4-26)
CNJ651
VIDEO
LINE OUT2
L
AUDIO
LINE OUT2
R
GA66/GA77K/GF99K MODEL
CNJ801
L
AUDIO
LINE OUT1
R
RFU801
IN
OUT
1
3
6
GA70K/GA77K
GF90K/GF99K MODEL
IC502
KARAOKE
PROC.
/SRAM
.
9
5
PH202
T REEL
FG
PH201
S REEL
FG
Q201
T
SENS
Q202
S
SENS
IC203
RESET
c
SIGNAL
CONTROL
MESECAM
V DATA / V CLK
QVD
V ENV
1
CSYNC
AMS
SDA / SCL
AF ENV
AF SWP
REC P
T REEL
S REEL
T SENS
S SENS
TE/LED
o
2
5
IC201
DRUM
SERVO
CAPSTAN
SERVO
SYSTEM
CONTROL
0
m
4
(2/2)
DRUM DA
DRUM FG/PG
CAP RVS
CAP FG
CTL
MODE1-4
LED POWER
KEY1
KEY2
SYNC REC
8
KEY4
S203
REC
KEY3
S204
PAUSE
ADJ-A
ADJ-BADJ-B
Q207-209
Q211-213
Q233
DRIVE
RMC
LED
9
IC202
CAM
MOTOR
DRIVE
9
GF80/GF90K
/GF99K/PH99
GA77K:PL/GF99K:PL
2
8
KEY(1)
KEY(2)
KEY(4)
4
TEL 13942296513 QQ 376315150 892498299
3-1 3-2
SLV-GA30/GA50/GA66/GA70K/GA77K/GF80/GF90K/GF99K/P66/PH99
3-2. VIDEO BLOCK DIAGRAM
(SEE PAGE 4-5)
3
CN202
1
16
7
Q102
BUFF
SP1
SP1
SP2
SP2
9
31
30
28
DRUM FF
SW30
VCA
ATT
4
(-10dB)
ATT
(-10dB)
ATT
(-10dB)
IC101 &¡ REC/PB
3.579545MHz
IC101 &∞ REC/PB
4.433619MHz
IC101 &£ REC/PB
.
6
SW29
SP
SP
REC
MUTE
2
4.433619MHz
0.54Vp-p
79 7881
3
SW7
2
0.1Vp-p
0.66Vp-p
x
SW28
SW27
VIDEO
629
TRAP
FM
AGC
P EQ
MMS
9
DL
AGC
Q
CN101 3 REC/PB
25Hz
CN101 2 PB
0.1V/div 0.2µsec/div
TEL 13942296513 QQ 376315150 892498299
IC101 *§, *ª REC
0.5V/div 0.1µsec/div
Q
5Vp-p
FOR
CHECK
DRUM
VIDEO
HEAD
SP
CH1
SP
CH2
T
CNJ651
VIDEO
IN 2
(SEE PAGE
4-26)
w
CN101
V SW P
3
PB RF
2
CN102
6
5
2
1
E
L
JK-166
BOARD
GA66/GA77K
GF80/GF90K/GF99K/PH99
w
3
MA-336 BOARD
89
88
86
87
CNJ801
VIDEO
1
IN 1
CN651
V IN2
1
MODEL
w
IC101
VIDEO
REC/PB AMP
Y/C PROCESSOR
HPF
SEP
COMP
PR
SW8
6
X-TAL
VCO/OSC
X101
4.43MHz
3.58MHz
i
1
ENV
DET
REC
MUTE
SW19
5
X102
a
5
97
84
P
R
HPF
LPF
2FL
1/2
VCO
1
G EQ DLIM DEMO
1M
HPF7MLPF
CR DET
2fSC
76717375
Q101Q101
SW20
ACC
4 PHASE
GEN
3
REC
APC
PB
APC
REC
AFC
GA77K:PL/GF99K:PL MODEL
EXCEPT
o
CTL TRAP
LPF
1
fH HPF
SW18
P
R
MODE
y
FM
PULSE
GEN.
SUB
LPF
TRAP
MAIN
CONV.1
MAIN
CONV.2
5
SW24
P
R
MAIN EMPH
CARRIER
OFFSET W.C/DC
SW5
u
SW21
R
P
C
LPF
MIX
LEVEL
C
LPF
R
SW23
P
R
SW22
P
MAIN
DE-EMPH
Q104 Q103
0
P
R
FBC/
ALC
16
1
IC101 %∞ PB
B.D CK
C.K B.E
DL
Q
SW10
SW17
RP
H
NP
SW25
R
SW26
DL
PRP
Q
Y
LPF
SW13
P
R
R
D.E.
N.C.
IC101 !• REC/PB
H
PAL
6
0.58Vp-p
IC101 %• REC/PB
H
3
N.L.
DE EMPH
N.L.
EMPH
REC:0.4Vp-p
PB:0.48Vp-p
Q204
REC:0.4Vp-p
PB:0.5Vp-p
CCD
LPF
VCA
7
SW11
R
P
3
IC101 %™ REC/PB
H
6dB
5455
AMPCSQUELCH
6
CLP
DO
DO REC
CLP
SHARPNESS
CONT
.
8
REC:2.2Vp-p
PB:2.3Vp-p
58
60
23
3
Y NR
SW14
191718
Q217-219
VIDEO
ALC
1
9
CLEAR
SYNC
SQUELCH
35
46
24
5
IC101 @¡ REC/PB
c
6dB
AMP
C
CCD
LPF
1
IC101 #ª REC/PB
H
H
SYNC
SEP
2
52
51
26 39
5
REC:0.5Vp-p
PB:0.6Vp-p
0.4Vp-p
SERIAL
CONT
o
0
4221
4
RF SW P IC201
V ENV IC201
MESECAM IC201
QVD IC201
Y
CCD
CLOCK
44
50
69
63
62
KILL
64
m
9
24
13
80
27
EXCEPT
GA77K:PL/
GF99K:PL
Q215,216
BUFF
Q205,214
2fSC
AMP
IC101 #∞ REC/PB
H
IC101 $§ REC/PB
H
IC101 ^º REC/PB
9
8
H
IC101 $™ REC/PB
H
IC101 %º REC/PB
C SYNC IC201
IC101 ^ª REC/PB
8.667MHz
V DATA IC201
V CLOCK IC201
KILL IC201
SHARP 1 IC201
SHARP 2 IC201
SHAPNESS IC201
NTSC IC201
TO/FROM
SYSCON
BLOCK
(SEE PAGE 3-5)
Q224,225
IC201
OSD
43
52
53
IC201 %£ REC/PB
8.86716MHz
REC:0.41Vp-p
PB:0.6Vp-p
REC:0.28Vp-p
PB:0.35Vp-p
2
REC:0.28Vp-p
PB:0.35Vp-p
IC101 $¢ REC/PB
8.8671MHz
REC:0.35Vp-p
PB:0.38Vp-p
4.6Vp-p
H
0.46Vp-p
8
(1/3)
4
0.45Vp-p
54
100
99
19
20
29
94
18
FROM
AUDIO
BLOCK
(SEE PAGE 3-8)
45
2.6Vp-p
CN202
9
TO/FROM
SYSCON
BLOCK
(SEE PAGE
3-5)
2
RFU AUDIO
Q801
BUFF
IC201 $£$∞ REC/PB
H
(SEE PAGE 4-26)
CN651
3
3
GA66/GA77K/GF99K
2
8
9
2
4
1
2Vp-p
V OUT2
JK-166
BOARD
MODEL
9
RFU801
AUDIO
TV/VTR
VIDEO
9
CNJ801
VIDEO
OUT 1
CNJ652
VIDEO
OUT 2
9
IN
OUT
TEL 13942296513 QQ 376315150 892498299
3-3 3-4
3-3. SERVO/SYSTEM CONTROL BLOCK DIAGRAM
ENCODER
MECHA
(
POSITION
CTL
HEAD
CAM
3
7
7
1
5
3
7
1
6
4 4
5
2
3
CAM
MOTOR
M
(
9
7
1
5
3
7
1
6
5
2
3
6
5
3
1
16
6
MA-336 BOARD
CN204
CN205
CN401
CN203
D VS
D PG
D FG
LIMITER
CTL REF
CAP VS
CAP RVS
4
2
CAP FG
MODE1
MODE2
MODE3
MODE4
.
GF90K/GF99K
(SEE PAGE 3-10)
D5V
M12V
D5V
D5V
FROM
KARAOKE
BLOCK
D5V
2
x
3
(SEE PAGE 4-7)
9
IC201 @£@¢ REC/PB
CN201
Q
Q
3
DRUM MOTOR
M901
OUTPUT
M
HALL
DEVICE
OUTPUT
TEL 13942296513 QQ 376315150 892498299
CAPSTAN MOTOR
M902
D5V
HALL
DEVICE
T
E
L
w
w
MATRIX
VCC
U+
VCC
UV+
VW+
W-
U
V
W
CAPSTAN
FG
PG
FG
VM
TL
1
w
3-5 3-6
IC201 @§ REC/PB
0.88MHz
IC201 #ª REC/PB
25Hz
IC201 #• REC/PB
600Hz
6
25Hz
i
KR SW/
7
ECHO VR
1
5Vp-p
4.1Vp-p
5
5Vp-p
a
4Vp-p
1
5
IC201
SERVO CONTROL
26
DRUM DA
39
DRUM PG
38
DRUM FG
66
CAP PWM
96
CAP QR
25
CAP VS
55
CAP RVS
3
40
CAP FG
IC201 %¢ REC/PB
o
Q250, 251
SW
1
(2/3)
4Vp-p
H
(SEE PAGE 3-4)
GA70K/GA77K
GF90K/GF99K MODEL
(SEE PAGE 3-8)
y
5
D203
T/S LED
IC201 @∞ REC/PB
1.18MHz
IC201 $º REC/PB
758Hz
RFU801
TO/FROM
VIDEO
BLOCK
TO/FROM
AUDIO
BLOCK
0
S202
REC
PROOF
Q
25Hz
IC201 #™ REC
RF SWP
V ENV
QVD
C SYNC
V DATA
V CLOCK
KILL
SHARP 1
SHARP 2
NTSC
AMS
A MUTE
PB
LINE 1
SDA
SCL
AF ENV
AF SWP
REC P
IC203
RESET
PH202
T REEL
FG
PH201
S REEL
FG
Q201
TAKE END
SENSOR
Q202
SUPPLY END
SENSOR
RV201
A SWP
ADJ
RV202
V SWP
ADJ
Q
25Hz
Q203
LED
DRIVE
5V
5V
3.1Vp-p
6
8
X201
10MHz
3.1Vp-p
MODE1
MODE2
MODE3
MODE4
IC204
M12V
M12V
GF80/GF90K/GF99K
/PH99
5Vp-p
IC202
CAM
MOTOR DRIVE
CAM+
IN2
CAM-
IC101
81
IC101
84
,Q220
C
4
IC101
51
IC101
50
IC101
63
IC101
62
IC101
64
Q217
B
Q218
B
IC101
17
,Q204
B
Q581
C
IC101
99
Q751
B
Q752
B
IC301
41
IC301
42
IC301
39
,IC301
40IC302
IC302
5
5V
REG
IC201 #¡ REC
4
MESECAM DET
SHARPNESS
1
IC101
u
12V
4.6Vp-p
10
2
18
1
3
100
SYSTEM CONTROL
16713
RESET
88
T REEL FG
89
S REEL FG
12
T SENS
11
S SENS
74
T/E LED
9
A SWP ADJ
8
V SWP ADJ
1
REC PRF
73
10M OUT
7
72
10M IN
31
CTL IN+
32
CTL IN-
95
CAM
MODE1
62
MODE2
63
MODE3
64
MODE4
65
RF SWP
24
V ENV
13
TV/VTR
80
QVD
27
C SYNC
54
V DATA
V CLK
99
KILL IN
19
SHARP 1
20
SHARP 2
29
SHARPNESS VR
94
NTSC
18
58
AMS
21
AU MUTE
90
PB
91
LINE 1
AF DATA
98
AF CLK
97
3
A ENV
14
AF SWP
23
REC P
17
IC201
SLV-GA30/GA50/GA66/GA70K/GA77K/GF80/GF90K/GF99K/P66/PH99
(SEE PAGE 4-23)
Q601
POWER
ON
Q602
POWER
ON
S602
EJECT
S607
PLAY
9
S603
VIRTUAL
SOUND
S611
AUTO/
MANUAL
IC601
REMOTE
CONTROL
RECEIVER
2
D601
GA66/GA77K/GF80/GF90K/GF99K/PH99
8
ON SCREEN
DISPLAY
+5V
21
GA77K:PL/GF99K:PL
S608
FF
2
S612
D603-607
D608
D609
D610-612
D613
D614
D615,616
9
EXCEPT
MODEL
EXCEPT
S620
SYNC
REC
+5V
LINE 1
LINE 2
AUTO
PAL/MESECAM
NTSC
9
NTSC 3.58
NTSC 4.43
ON PAL TV
EXCEPT GA77K:PL/GF99K:PL
EXCEPT GA30
GF80/GF90K/GF99K/PH99
GA77K:PL/GF99K:PL
GA66/GA77K/GF99K
9
GA30
D602
S615
LINE
SELECT
S605
COLOR
SYSTEM
9
S610
NTSC
PB
S613
PICTURE
CONTROL
FR-142 BOARD
(SEE PAGE 4-21)
(3/3)
POWER LED
KEY 2
KEY 4
6
KEY 3
ADJ-A
ADJ-B
SHARP LED
TRACK LED
L LED
HF LED
R LED
REC LED
C IN LED
DNS 5 LED
.
SUR CONT 1
SUR CONT 2
SUR CONT 3
8
67
3KEY 1
4
86SYNC REC
6
3
5
92
93
82REMOCON
87
56
84
83
85
81
57
79
78DNS 4 LED
77DNS 3 LED
76DNS 2 LED
75DNS 1 LED
7DEST 2
59
60
61
9
IC201 &™ REC/PB
5
1
10MHz
Q207-209
Q211-213
Q233
LED
DRIVE
Q221,222,226
c
GA66/GA77K/GF99K
2
POWER ON IC502
EXCEPT
GA30
Q210
LED
DRIVE
S203
REC
5
1
3.2Vp-p
S204
PAUSE
GF80/GF90K/GF99K/PH99 MODEL
GA77K:PL/GF99K:PL MODEL
LED
DRIVE
o
4
TO
KARAOKE
4
BLOCK
(SEE PAGE 3-10)
0
SHARPNESS LED
SURROUND LED
S801
OTHER
TV
SYSTEM
TV
m
GA30
EXCEPT
LED POWERLED POWER
KEY 1
KEY (1)
KEY (1)
KEY 2
KEY (2)
KEY (4)
SYNC REC
KEY (4)
KEY 4
KEY (1)
8
KEY (2)
KEY 3
ADJ-A
ADJ-B
REMOCON
TRACKING LED
L LED
HIFI LED
R LED
DNS 5 LED
DNS 4 LED
REC LED
CASSETTE LED
TV/VTR LED
DNS 3 LED
DNS 2 LED
DNS 1 LED
SR-C1
SR-C2
SR-C3
9
CN207
4
1
33
CN210
1
2
1
3
4
5
CN208
CN208
CN201
5
4
2
9
3
CN206
7
6
5
13
2
3
10
11
12
9
8
CN201
14
13
15
12
11
9
8
6
5
4
CN702
FR-140 BOARD
CN605
4
1
TEST
CN604
1
3
4
5
CN601
11
12
14
2
13
CN602
7
6
5
13
2
3
10
11
12
9
8
CN601
2
3
1
4
5
7
8
SURROUND
SR-35 BOARD
(SEE PAGE 3-9)
8
S601
ON
STANDBY
FR-141 BOARD
(SEE PAGE 4-24)
S606
STOP
S609
REW
4
GA66
TO
BLOCK
CN701
/GA77K/GF99K
TEL 13942296513 QQ 376315150 892498299
EP
S614
SP/EP
SP
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