Sony SLV-GA35MK2 / SLV-GA36 / SLV-GA45AV / SLV-GA55MK2 / SLV-GA59 / SLV-GF85MK2 / SLV-GF86 / SLV-SA34 Service Manual ▷ View online
SERVICE MANUAL
GA45AV
All model
names
SLV-
GF85MK2
GA55MK2
GA65MK2
African Model
SLV-GA59
E Model
SLV-GA35MK2/GA45AV/GA55MK2
Middle East Model
SLV-GA45AV/GA55MK2/GA65MK2
Philippine Model
SLV-GA35MK2/GA55MK2/GF85MK2
Taiwan Model
SLV-GA36/GA45AV/GF86/SA34
Thailand Model
SLV-GA45AV/GF85MK2
VIDEO CASSETTE RECORDER
• Refer to the SERVICE MANUAL of VHS MECHANICAL
ADJUSTMENTS
VI
for MECHANICAL ADJUSTMENTS.
(9-921-647-11)
* The abbreviations of GA35, GA45, GA55, GA65 and GF85 contained in this service manual are indicated
when these models are common to all their corresponding models as given below.
GA45
Abbreviated
model name
model name
GA55
GA65
GF85
RMT-V286/V286A/V286B/V286C
SLV-GA35/GA36/GA45/GA55/GA59/
GA65/GF85/GF86/SA34
Photo: SLV-GA59
SPECIFICATIONS
S MECHANISM
GA35MK2
GA35
– Continued on next page –
System
SLV-GA35: E/GA45: E, ME, TH/
GA55: E, ME/GA59/GA65/GF85: TH
GA55: E, ME/GA59/GA65/GF85: TH
Colour
SECAM (GA59)
system
PAL, MESECAM, NTSC 3.58, NTSC 4.43
RF output signal
UHF channels 30 to 39
(B/G, D/K)
(B/G, D/K)
Aerial out
75-ohm asymmetrical aerial socket
Inputs and outputs
LINE 1 IN
VIDEO IN, phono jack (1)
Input signal: 1 Vp-p, 75 ohms,
unbalanced, sync negative
AUDIO IN, phono jack (2)
Input level: 327 mVrms
Input impedance: more than 47 kilohms
Input signal: 1 Vp-p, 75 ohms,
unbalanced, sync negative
AUDIO IN, phono jack (2)
Input level: 327 mVrms
Input impedance: more than 47 kilohms
LINE 1 OUT
VIDEO OUT, phono jack (1)
Output signal: 1 Vp-p, 75 ohms,
unbalanced, sync negative
AUDIO OUT, phono jack (2)
Standard output: 327 mVrms
Load impedance: 47 kilohms
Output impedance: less than 10 kilohms
Output signal: 1 Vp-p, 75 ohms,
unbalanced, sync negative
AUDIO OUT, phono jack (2)
Standard output: 327 mVrms
Load impedance: 47 kilohms
Output impedance: less than 10 kilohms
General
Power requirements
110 – 240 V AC, 50/60 Hz
Power consumption
12 W (GA45: E, ME, TH/GA55: PL, E,
ME/GA59/GA65/GF85: PL, TH/
GA45AV/GF86)
ME/GA59/GA65/GF85: PL, TH/
GA45AV/GF86)
Operating temperature
5°C to 40°C
Storage temperature
–20°C to 60°C
System
Format
VHS NTSC standar
Colour system
PAL, MESECAM, NTSC 3.58 (GA35: PL/GA55: PL)
d
Video recording system
Rotary head helical scanning FM system
Video heads
Double azimuth two heads
Video signal
NTSC color, EIA standards
Tape speed
SP: 33.35 mm/s
EP: 11.1
LP: 16.67 mm/s (GA35: PL/GA55: PL)
EP: 11.1
LP: 16.67 mm/s (GA35: PL/GA55: PL)
1 mm/s
Maximum recording/playback time
9 hrs. in EP mode (with T-180 tape)
Fast-forward and rewind time
Approx. 4 min. 30 sec. (with T-120 tape)
Tuner section
RF output channel
VHF channel 3 or 4
Antenna
75-ohm antenna terminal for VHF/UHF
SLV-GA35: PL/GA55: PL/GF85: PL/
GA36/GA45: TW/SA34/GF86
GA36/GA45: TW/SA34/GF86
10 W (GA35: PL, E/GA36: TW/SA34)
– 2 –
SAFETY CHECK-OUT
1. Check the area of your repair for unsoldered or poorly-sol-
dered connections. Check the entire board surface for solder
splashes and bridges.
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 transis-
tors, that were installed during a previous repair. Point them
out to the customer and recommend their replacement.
out to the customer and recommend their replacement.
After correcting the original service problem, perform the following
safety checks before releasing the set to the customer:
safety checks before releasing the set to the customer:
4. Look for parts which, though functioning, show obvious signs
of deterioration. Point them out to the customer and recom-
mend their replacement.
mend their replacement.
5. Check the B+ voltage to see it is at the values specified.
SAFETY-RELATED COMPONENT WARNING!!
COMPONENTS IDENTIFIED BY MARK
0
OR DOTTED
LINE WITH MARK
0
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 PUB-
LISHED BY SONY.
OPERATION. REPLACE THESE COMPONENTS WITH
SONY PARTS WHOSE PART NUMBERS APPEAR AS
SHOWN IN THIS MANUAL OR IN SUPPLEMENTS PUB-
LISHED BY SONY.
• Feature Difference
SLV- GA35MK2: GA35MK2:
GA36
GA45AV: E
GA45AV: GA55MK2:
GA59
GA65MK2 GF85MK2: GF85MK2:
GF86
PL
E
SA34
GA45AV: ME
TW
PL
PL
TH
GA45AV: TH
GA55MK2: E
GA55MK2: E
FEATURE
GA55MK2: ME
HEAD/CH
2/2
2/2
2/2
2/2
2/2
2/2
2/2
2/2
2/4
2/4
2/4
NTSC (3.58)
(REC/PB)
×
/
a
×
/
×
×
/
a
a
/
a
a
/
a
a
/
a
a
/
a
a
/
a
a
/
a
a
/
a
a
/
a
NTSC (4.43)
(REC/PB)
×
/
×
×
/
a
×
/
×
a
/
a
×
/
×
×
/
×
a
/
a
a
/
a
×
/
×
a
/
a
×
/
×
PAL
(REC/PB)
×
/
a
×
/
a
×
/
×
a
/
a
×
/
×
a
/
a
a
/
a
a
/
a
×
/
×
a
/
a
×
/
×
SECAM
(REC/PB)
×
/
×
×
/
×
×
/
×
×
/
×
×
/
×
×
/
×
×
/
a
×
/
×
×
/
×
×
/
×
×
/
×
ME-SECAM
(REC/PB)
×
/
a
×
/
a
×
/
×
a
/
a
×
/
×
a
/
a
a
/
a
a
/
a
×
/
×
a
/
a
×
/
×
REC (NTSC)
(SP/EP)
×
×
×
a
a
a
a
a
a
a
/
×
a
REC (PAL) (SP/LP)
×
×
×
a
×
a
a
a
×
a
/
×
×
PLAY (NTSC)
(SP/LP/EP)
a
a
a
/
×
/
a
a
a
/
×
/
a
a
a
a
a
/
×
/
a
a
/
×
/
×
a
/
×
/
a
PLAY (PAL) (SP/LP)
a
a
×
a
×
a
a
a
×
a
/
×
×
RCA REAR LINE
IN/OUT
IN/OUT
×
/
a
(2P)
×
/
a
(2P)
×
/
a
(2P)
a
(2P)
a
(2P)
a
(2P)
a
(2P)
a
(2P)
a
(3P)
a
(3P)
a
(3P)
MODULATOR
SYSTEM
SYSTEM
3/4 ch
G/K
13 ch
G/K
13 ch
3/4 ch
G/K
G/K
3/4 ch
G/K
13 ch
REMOTE
RMT-
COMMANDER
V286A
V286A
V286C
V286
V286B
V286
V286
V286
V286
V286
V286B
• Abbreviation
ME : Middle East model
PL : Philippine model
TH : Thailand model
TW : Taiwan model
PL : Philippine model
TH : Thailand model
TW : Taiwan model
Supplied accessories
Remote commander (1)
R6 (Size AA) batteries (2)
R6 (Size AA) batteries (2)
Aerial cable (1)
Audio/video cable (3-phono to 3-phono) (1) (GF85: PL, TH)
Audio/video cable (3-phono to 3-phono) (1) (GF85: PL, TH)
Design and specifications are subject to change
without notice.
without notice.
Dimensions
Approx. 355
×
96
×
293 mm (w/h/d)
including projecting parts and controls
Mass
Approx. 3.8 kg
75-ohm coaxial cable with F-type connectors (1)
(GA35: PL/GA55: PL/GF85: PL)
(GA35: PL/GA55: PL/GF85: PL)
Audio/video cable (2-phono to 2-phono) (1) (GA45: E, ME)
– 3 –
TABLE OF CONTENTS
Section
Title
Page
Section
Title
Page
Feature Difference ................................................................... 2
SERVICE NOTE ...................................................................... 4
SERVICE NOTE ...................................................................... 4
1.
GENERAL
Getting Started .............................................................. 1-1
Basic Operations ........................................................... 1-2
Additional Operations .................................................... 1-3
Additional Information ................................................... 1-5
Basic Operations ........................................................... 1-2
Additional Operations .................................................... 1-3
Additional Information ................................................... 1-5
2.
DISASSEMBLY
2-1.
Upper Case Removal .................................................... 2-1
2-2.
Front Panel Section Removal ........................................ 2-1
2-3.
Rear Panel Removal ..................................................... 2-1
2-4.
Mechanism Deck Removal ............................................ 2-1
2-5.
MA-366 Board Removal ................................................ 2-2
2-6.
Internal Views ................................................................ 2-3
2-7.
Circuit Boards Location ................................................. 2-4
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.
Mode Control Block Diagram ........................................ 3-9
3-6.
Power Block Diagram .................................................... 3-11
4.
PRINTED WIRING BOARDS AND
SCHEMATIC DIAGRAMS
SCHEMATIC DIAGRAMS
4-1.
Frame Schematic Diagram ............................................ 4-3
4-2.
Printed Wiring Boards and Schematic Diagrams ......... 4-5
MA-366 Printed Wiring Board ....................................... 4-5
MA-366 (Video, Audio) Schematic Diagram ................. 4-9
MA-366 (OSD, Servo/System/Mode Control)
Schematic Diagram ....................................................... 4-13
MA-366 (HiFi Audio, I/O, Tuner)
Schematic Diagram ....................................................... 4-15
MA-366 (Power Supply) Schematic Diagram ............... 4-17
SE-119 Printed Wiring Board ........................................ 4-20
SE-119 Schematic Diagram .......................................... 4-21
FR-167 Printed Wiring Board and
Schematic Diagram ....................................................... 4-23
MA-366 Printed Wiring Board ....................................... 4-5
MA-366 (Video, Audio) Schematic Diagram ................. 4-9
MA-366 (OSD, Servo/System/Mode Control)
Schematic Diagram ....................................................... 4-13
MA-366 (HiFi Audio, I/O, Tuner)
Schematic Diagram ....................................................... 4-15
MA-366 (Power Supply) Schematic Diagram ............... 4-17
SE-119 Printed Wiring Board ........................................ 4-20
SE-119 Schematic Diagram .......................................... 4-21
FR-167 Printed Wiring Board and
Schematic Diagram ....................................................... 4-23
5.
INTERFACE, IC PIN FUNCTION DESCRIPTION
5-1.
System Control-Video Block Interface
(MA-366 BOARD IC101) ............................................... 5-1
(MA-366 BOARD IC101) ............................................... 5-1
5-2.
System Control-Servo Peripheral Circuit Interface
(MA-366 BOARD IC101) ............................................... 5-1
(MA-366 BOARD IC101) ............................................... 5-1
5-3.
System Control-Mechanism Block Interface
(MA-366 BOARD IC101) ............................................... 5-2
(MA-366 BOARD IC101) ............................................... 5-2
5-4.
System Control-Audio Block Interface
(MA-366 BOARD IC101) ............................................... 5-3
(MA-366 BOARD IC101) ............................................... 5-3
5-5.
Servo/System Control Microprocessor
Pin Function (MA-366 BOARD IC101) ......................... 5-4
Pin Function (MA-366 BOARD IC101) ......................... 5-4
6.
ADJUSTMENTS
6-1.
Mechanical Adjustments ............................................... 6-1
6-2.
Electrical Adjustments ................................................... 6-1
2-1.
Pre-Adjustment Preparations ........................................ 6-1
2-1-1. Instruments to be Used ............................................ 6-1
2-1-2. Connection ............................................................... 6-1
2-1-3. Set-up of Adjustment ............................................... 6-1
2-1-4. Alignment Tapes ....................................................... 6-1
2-1-5. Specified I/O Level and Impedance ......................... 6-1
2-1-6. Adjusting Sequence ................................................. 6-2
2-1-2. Connection ............................................................... 6-1
2-1-3. Set-up of Adjustment ............................................... 6-1
2-1-4. Alignment Tapes ....................................................... 6-1
2-1-5. Specified I/O Level and Impedance ......................... 6-1
2-1-6. Adjusting Sequence ................................................. 6-2
2-2.
Power Supply Adjustment ............................................. 6-2
2-2-1. Power Supply Check ................................................ 6-2
2-3.
Servo System Adjustment ............................................. 6-2
2-3-1. RF Switching Position Adjustment ........................... 6-2
2-4.
Audio System Adjustments ........................................... 6-3
2-4-1. Hi-Fi Audio System Adjustment ............................... 6-3
1.
1.
AF Switching Position Adjustment ........................... 6-3
2-4-2. Normal Audio System Adjustment ........................... 6-3
1.
1.
ACE Head Adjustment ............................................. 6-3
2.
E-E Output Level Check ........................................... 6-3
2-5.
Parts Arrangement Diagram for Adjustments ............... 6-4
7.
REPAIR PARTS LIST
7-1.
Exploded Views ............................................................. 7-1
7-1-1. Front Panel and Cabinet Assemblies ....................... 7-1
7-1-2. Chassis Assembly .................................................... 7-3
7-1-3. Mechanism Chassis Assembly (1) ........................... 7-4
7-1-4. Mechanism Chassis Assembly (2) ........................... 7-5
7-1-5. Mechanism Chassis Assembly (3) ........................... 7-6
7-1-2. Chassis Assembly .................................................... 7-3
7-1-3. Mechanism Chassis Assembly (1) ........................... 7-4
7-1-4. Mechanism Chassis Assembly (2) ........................... 7-5
7-1-5. Mechanism Chassis Assembly (3) ........................... 7-6
7-2.
Electrical Parts List ....................................................... 7-7
– 4 –
SERVICE NOTE
1. DISASSEMBLY
• This set can be disassembled in the order shown below.
Note:
Pages in indicated pages in the SERVICE MANUAL.
Pages in indicated pages in the VHS MECHANICAL ADJUSTMENT MANUAL VI.
Pages in indicated pages in the VHS MECHANICAL ADJUSTMENT MANUAL VI.
Set
Upper case
(Page 2-1)
(Page 2-1)
Front Panel
Section
(Page 2-1)
Pinch Press
Block Ass’y
(Page 14)
Ground Shaft
Ass’y
(Page 13)
Mechanism
Deck
(Page 2-1)
FL Complete
Ass’y
(Page 13)
Drum
Ass’y
Ass’y
(Page 13)
Rear
Panel
(Page 2-1)
Rubber
Belt
(Page 15)
Rubber
Belt
(Page 15)
Slider
(Page 26)
Loading
Gear (T, S)
(Page 28)
Retainer
Plate
(Page 22)
MA-366
Board
(Page 2-2)
Rubber
Belt
(Page 15)
Capstan
Motor
(Page 15)
FL Slider
Block Ass’y
(Page 22)
Rotary
Switch
Switch
(Page 2-2)
Tuner
Unit
Pully Gear
Ass’y
(Page 29)
Cam Motor
Retainer
(Page 31)
Cam Gear
(Page 23)
Cam Motor
(Page 31)
Reel Direct
Ass’y
(Page 30)