Sony SLV-EX50 / SLV-EX80S / SLV-EX90S Service Manual ▷ View online
Argentina Model
SLV-EX50AR/EX80SAR/
EX90SAR
Brazil Model
SLV-EX50BR/EX80SBR/
EX90SBR
VIDEO CASSETTE RECORDER
* The abbreviations of EX50/EX80S and EX90S contained in this
service manual are indicated when these models are common to
all their corresponding models as given below.
all their corresponding models as given below.
EX50
Abbreviated
model name
All model
names
SLV-
EX80S
EX90S
EX90SAR
EX90SBR
EX90SBR
RMT-V312/V312A
SLV-EX50/EX80S/EX90S
EX80SAR
EX80SBR
EX80SBR
EX50AR
EX50BR
EX50BR
SLV-EX90S
SERVICE MANUAL
1
2
3
4
5
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7
8
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0
VIDEO
g
S MECHANISM
Refer to the SERVICE MANUAL of VHS MECHANICAL
ADJUSTMENTS VI for MECHANICAL ADJUSTMENTS.
(9-921-647-11)
ADJUSTMENTS VI for MECHANICAL ADJUSTMENTS.
(9-921-647-11)
– 2 –
SAFETY CHECK-OUT
1. Check the area of your repair for unsoldered or poorly-soldered
connections. Check the entire board surface for solder splashes
and bridges.
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
OR DOTTED
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.
OPERATION. REPLACE THESE COMPONENTS WITH
SONY PARTS WHOSE PART NUMBERS APPEAR AS
SHOWN IN THIS MANUAL OR IN SUPPLEMENTS
PUBLISHED BY SONY.
System
Format
Format
VHS N-PAL, NTSC standard
(SLV-EX50AR/EX80SAR/EX90SAR)
VHS M-PAL, NTSC standard
(SLV-EX50BR/EX80SBR/EX90SAR)
Video recording system
Rotary head helical scanning FM system
Video heads
Double azimuth four heads
(SLV-EX80S/EX90S)
Double azimuth two heads
(SLV-EX50)
Video signal
NTSC color, EIA standards
Tape speed
SP: 33.35 mm/s (1
3/8
inches/s)
EP: 11.11 mm/s (
7/16
inches/s)
LP: 16.67 mm/s (
11/16
inches/s),
playback only
Maximum recording/playback time
8 hrs. in EP mode (with T-160 tape)
Fast-forward and rewind time
Approx. 3 min. (with T-20 tape)
Tuner Section
Channel coverage
Channel coverage
VHF 2 to 13
UHF 14 to 69
CATV A-8 to A-1, A to W, W+1 to W+84
UHF 14 to 69
CATV A-8 to A-1, A to W, W+1 to W+84
Antenna
75-ohm antenna terminal for VHF/UHF
Inputs and Outputs
SLV-EX80S/EX90S:
LINE-1 IN and LINE-2 IN
SLV-EX80S/EX90S:
LINE-1 IN and LINE-2 IN
VIDEO IN, phono jack (1 each)
Input signal: 1 Vp-p, 75 ohms,
unbalanced, sync negative
Input signal: 1 Vp-p, 75 ohms,
unbalanced, sync negative
AUDIO IN, phono jack (2 each)
Input level: 327 mVrms
Input impedance: more than 47 kilohms
Input level: 327 mVrms
Input impedance: more than 47 kilohms
LINE 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
SLV-EX50:
LINE-1 IN
LINE-1 IN
VIDEO IN, phono jack (1)
Input signal: 1 Vp-p, 75 ohms,
unbalanced, sync negative
AUDIO IN, phono jack (1)
Input level: 327 mVrms
Input impedance: more than 47 kilohms
Input signal: 1 Vp-p, 75 ohms,
unbalanced, sync negative
AUDIO IN, phono jack (1)
Input level: 327 mVrms
Input impedance: more than 47 kilohms
LINE-OUT
VIDEO OUT, phono jack (1)
Output signal: 1 Vp-p, 75 ohms,
unbalanced, sync negative
AUDIO OUT, phono jack (1)
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 (1)
Standard output: 327 mVrms
Load impedance: 47 kilohms
Output impedance: less than 10 kilohms
Timer section
Clock
Clock
Quartz locked
Timer indication
12-hour cycle
Timer setting
8 programs per month (max.)
SPECIFICATIONS
General
Power requirements
Power requirements
110-240 V AC, 50/60 Hz
(SLV-EX50BR/EX80SBR/EX90SBR)
220 V AC, 50 Hz
(SLV-EX50AR/EX80SAR/EX90SAR)
(SLV-EX50BR/EX80SBR/EX90SBR)
220 V AC, 50 Hz
(SLV-EX50AR/EX80SAR/EX90SAR)
Power consumption
14 W (SLV-EX80S/EX90S)
12 W (SLV-EX50)
12 W (SLV-EX50)
Operating temperature
5°C to 40°C
Storage temperature
–20°C to 60°C
Dimensions
Approx. 430 x 97 x 292 mm (w/h/d)
including projecting parts and controls
including projecting parts and controls
Mass
Approx. 4.1 kg
Power back-up
Built-in self-charging capacitor
Back-up duration: up to 8 hours at a time
Back-up duration: up to 8 hours at a time
Supplied accessories
Remote commander (1)
Size AA(R6) batteries (2)
75-ohm coaxial cable with F-type connectors (1)
Audio/video cable (3-phono to 3-phono)
Remote commander (1)
Size AA(R6) batteries (2)
75-ohm coaxial cable with F-type connectors (1)
Audio/video cable (3-phono to 3-phono)
(SLV-EX80SBR/EX90SBR) (1)
Design and specifications are subject to change
without notice.
without notice.
– 3 –
TABLE OF CONTENTS
Section
Title
Page
Section
Title
Page
Feature Difference ................................................................... 3
SERVICE NOTE ....................................................................... 5
SERVICE NOTE ....................................................................... 5
1.
GENERAL
Getting Started ............................................................... 1-1
Basic Operations ........................................................... 1-5
Search Operations ........................................................ 1-9
Additional Operations .................................................... 1-10
Additional Information .................................................... 1-13
Basic Operations ........................................................... 1-5
Search Operations ........................................................ 1-9
Additional Operations .................................................... 1-10
Additional Information .................................................... 1-13
2.
DISASSEMBLY
2-1.
Case Front Panel Block Assembly ................................ 2-1
2-2.
DM-98, DI-81 Board and FJ-31 Board .......................... 2-1
2-3.
Rear Panel ..................................................................... 2-2
2-4.
MA-402 Board ................................................................ 2-2
2-5.
Mechanism Deck ........................................................... 2-3
2-6.
Internal Views ................................................................. 2-4
2-7.
Circuit Boards Location ................................................. 2-5E
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.
Tuner Block Diagram ..................................................... 3-9
3-6.
Mode Control Block Diagram ........................................ 3-11
3-7.
Power Block Diagram ..................................................... 3-13
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-402 Printed Wiring Board .................................. 4-5
•
MA-402 (Video, Audio) Schematic Diagram ............ 4-9
•
MA-402 (System Control) Schematic Diagram ....... 4-13
•
MA-402 (Servo Control) Schematic Diagram .......... 4-17
•
MA-402 (Hi-Fi Audio) Schematic Diagram ............... 4-19
•
MA-402 (Tuner) Schematic Diagram ........................ 4-21
•
MA-402 (I/O) Schematic Diagram ............................ 4-23
•
MA-402 (Mode Control) Schematic Diagram ........... 4-25
•
MA-402 (Power Supply) Schematic Diagram ......... 4-27
•
FJ-31 Printed Wiring Boards and
Schematic Diagrams ................................................ 4-31
Schematic Diagrams ................................................ 4-31
•
DM-98 Printed Wiring Boards and
Schematic Diagrams ................................................ 4-31
Schematic Diagrams ................................................ 4-31
•
DI-81 Printed Wiring Board and
Schematic Diagrams ................................................ 4-33
Schematic Diagrams ................................................ 4-33
5.
INTERFACE, IC PIN FUNCTION DESCRIPTION
5-1.
System Control-Video Block Interface
(MA-402 BOARD IC101) .............................................. 5-1
(MA-402 BOARD IC101) .............................................. 5-1
5-2.
System Control-Servo Peripheral Circuit Interface
(MA-402 BOARD IC101) .............................................. 5-1
(MA-402 BOARD IC101) .............................................. 5-1
5-3.
System Control-Mechanism Block Interface
(MA-402 BOARD IC101) .............................................. 5-2
(MA-402 BOARD IC101) .............................................. 5-2
5-4.
System Control-Audio Block Interface
(MA-402 BOARD IC101) .............................................. 5-3
(MA-402 BOARD IC101) .............................................. 5-3
5-5.
Servo/System Control,
OSD Microprocessor Pin Function
(MA-402 BOARD IC101) ............................................... 5-4
OSD Microprocessor Pin Function
(MA-402 BOARD IC101) ............................................... 5-4
5-6.
NICAM Processor Pin Function
(NK-11 BOARD IC1) ..................................................... 5-5E
(NK-11 BOARD IC1) ..................................................... 5-5E
6.
ERROR CODES
..................................................... 6-1E
7.
ADJUSTMENTS
7-1.
Mechanical Adjustments ............................................... 7-1
7-2.
Electrical Adjustments ................................................... 7-1
2-1. Pre-Adjustment Preparations ........................................ 7-1
2-1-1. Instruments to be Used ............................................ 7-1
2-1-2. Connection ................................................................ 7-1
2-1-3. Set-up of Adjustment ................................................ 7-1
2-1-4. Alingment Tapes ....................................................... 7-1
2-1-5. Specified I/O Level and Impedance ......................... 7-1
2-1-6. Adjusting Sequence .................................................. 7-2
2-2. Power Supply Adjustment .............................................. 7-2
2-2-1. Power Supply Check ................................................. 7-2
2-3. Servo System Adjustment ............................................. 7-2
2-3-1. RF Switching Position Adjustment ........................... 7-2
2-4. Audio System Adjustments ............................................ 7-3
2-4-1. Hi-Fi Audio System Adjustment ............................... 7-3
2-1-1. Instruments to be Used ............................................ 7-1
2-1-2. Connection ................................................................ 7-1
2-1-3. Set-up of Adjustment ................................................ 7-1
2-1-4. Alingment Tapes ....................................................... 7-1
2-1-5. Specified I/O Level and Impedance ......................... 7-1
2-1-6. Adjusting Sequence .................................................. 7-2
2-2. Power Supply Adjustment .............................................. 7-2
2-2-1. Power Supply Check ................................................. 7-2
2-3. Servo System Adjustment ............................................. 7-2
2-3-1. RF Switching Position Adjustment ........................... 7-2
2-4. Audio System Adjustments ............................................ 7-3
2-4-1. Hi-Fi Audio System Adjustment ............................... 7-3
1. AF Switching Position Adjustment ........................... 7-3
2. Frequency Response Check .................................... 7-3
3. Overall Level Characteristic and
2. Frequency Response Check .................................... 7-3
3. Overall Level Characteristic and
Distortion Factor Check ............................................ 7-4
4. Overall S/N Check .................................................... 7-4
2-4-2. Normal Audio System Adjustment ........................... 7-4
1. ACE Head Adjustment .............................................. 7-4
2. E-E Output Level Check ........................................... 7-4
3. Frequency Responce Check .................................... 7-4
4. Overall Level Characteristic and Distortion
2. E-E Output Level Check ........................................... 7-4
3. Frequency Responce Check .................................... 7-4
4. Overall Level Characteristic and Distortion
Factor Check ............................................................. 7-5
5. Overall S/N Check .................................................... 7-5
2-5. Tuner System Adjustment .............................................. 7-5
2-5-1. Separation Adjustment ............................................. 7-5
2-6. Parts Arrangement Diagram for Adjustments ............... 7-6E
2-5-1. Separation Adjustment ............................................. 7-5
2-6. Parts Arrangement Diagram for Adjustments ............... 7-6E
8.
REPAIR PARTS LIST
8-1.
Exploded Views .............................................................. 8-1
8-1-1. Front Panel and Upper Case Section ...................... 8-1
8-1-2. Chassis Section ........................................................ 8-3
8-1-3. Mechanism Deck Section-1 ...................................... 8-5
8-1-4. Mechanism Deck Section-2 ...................................... 8-6
8-1-5. Mechanism Deck Section-3 ...................................... 8-7
8-1-2. Chassis Section ........................................................ 8-3
8-1-3. Mechanism Deck Section-1 ...................................... 8-5
8-1-4. Mechanism Deck Section-2 ...................................... 8-6
8-1-5. Mechanism Deck Section-3 ...................................... 8-7
8-2.
Electrical Parts List ........................................................ 8-8
– 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.
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 2-3)
FL Complete
Ass’y
(Page 13)
Drum
Ass’y
Ass’y
(Page 13)
Rear
Panel
(Page 2-2)
Rubber
Belt
(Page 15)
Rubber
Belt
(Page 15)
Slider
(Page 26)
Loading
Gear (T, S)
(Page 28)
Retainer
Plate
(Page 22)
Rubber
Belt
(Page 15)
Capstan
Motor
(Page 15)
FL Slider
Block Ass’y
(Page 22)
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)
MA-402
Board
(Page 2-2)
Rotary
Switch
Switch
(Page 2-3)
Tuner
Unit