SLV-ED22KR, SLV-ED22PL, SLV-ED22TW, SLV-ED55KR, SLV-ED55PL, SLV-ED88TW, SLV-ED99KR, SLV-ED99PL, SLV-ED99TW — Sony VCR Service Manual (repair manual)

Model
SLV-ED22KR SLV-ED22PL SLV-ED22TW SLV-ED55KR SLV-ED55PL SLV-ED88TW SLV-ED99KR SLV-ED99PL SLV-ED99TW
Pages
75
Size
16.1 MB
Type
PDF
Document
Service Manual
Brand
Device
VCR
File
slv-ed22kr-slv-ed22pl-slv-ed22tw-slv-ed55kr-slv-ed.pdf
Date

View Sony SLV-ED22KR / SLV-ED22PL / SLV-ED22TW / SLV-ED55KR / SLV-ED55PL / SLV-ED88TW / SLV-ED99KR / SLV-ED99PL / SLV-ED99TW Service Manual online

SERVICE MANUAL
Taiwan Model
SLV-ED22TW/ED88TW/ED99TW
Korea Model
SLV-ED22KR/ED55KR/ED99KR
Philippines Model
SLV-ED22PL/ED55PL/ED99PL
VIDEO CASSETTE RECORDER
SLV-ED22/ED55/ED88/ED99
RMT-V297/V297A/V297D/V299/V299C
• Refer to the SERVICE MANUAL of VHS MECHANICAL
ADJUSTMENTS 
VI
 for MECHANICAL ADJUSTMENTS.
(9-921-647-11)
Photo: SLV-ED99KR
S  MECHANISM
* The abbreviations of ED22/ED55/ED88 and ED99 contained in this
service manual are indicated when these models are common to all
their corresponding models as given below.
Abbreviated
ED22
ED55
ED88
ED99
model name
All model
ED22KR
ED55KR
ED99KR
names
ED22PL
ED55PL
ED88TW
ED99PL
SLV-
ED22TW
ED99TW
SPECIFICATIONS
System
Format
VHS NTSC standard
Video recording system
Rotary head helical scanning FM system
Video heads
Double azimuth four heads (SLV-ED55/ED88/
ED99)
Double azimuth two heads (SLV-ED22)
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-120 tape)
Tuner section
Channel coverage 
VHF 2 to 13 
UHF 14 to 69 
CATV A-8 to A-1, A to W, W+1 to W+84
(SLV-ED22: KR, PL/ED55/ED99: KR, PL)
CATV A-6 to A-1, A, B, C to W+1, W+12 to W+84
(SLV-ED22TW/ED88/ED99TW)
Antenna
75-ohm antenna terminal for VHF/UHF
SLV-ED22: KR, PL/ED55/ED99: KR, PL
SP: 33.35 mm/s (1 
3
/
8
 inches/s)
EP: 11.11 mm/s (
7
/
16
 inches/s)
SLV-ED22TW/ED88/ED99TW: 
Inputs and outputs
SLV-ED99:
LINE-1 IN and LINE-2 IN (SLV-ED99PL)
LINE-1 IN (SAT IN/STB IN), LINE-2 IN and
LINE-3 IN (SLV-ED99: KR, TW)
VIDEO IN, phono jack (1 each)
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
– Continued on next page –
– 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.
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.
After correcting the original service problem, perform the following
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.
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.
SLV-ED22/ED55:
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
LINE-2 IN (SLV-ED55)
 
VIDEO IN, phono  jack (1)
Input signal:  1 Vp-p, 75 ohms,  unbalanced,
sync negative
AUDIO IN (MONO), 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  (1)
Standard output: 327 mVrms
Load impedance: 47 kilohms
Output impedance: less than 10 kilohms
Timer section 
Clock
Quartz locked
Timer indication
12-hour cycle
Timer setting
8 programs per month (max.)  
Power back-up
Built-in self-charging capacitor
Back-up duration: up to 8 hours at a time
General
Power requir ements
110 - 240 V AC, 50/60 Hz 
(SLV-ED22PL/ED55PL/ED99PL) 
100 V AC, 60 Hz
(SLV-ED22TW/ED88TW/ED99TW)
110 - 220 V AC, 60 Hz
(SLV-ED22KR/ED55KR/ED99KR)
Power consumption
21 W (SLV-ED99KR)
17 W (SLV-ED99PL)
15 W (SLV-ED22: KR, PL/ED55/ED88/ED99TW)
14 W (SLV-ED22TW)
Operating temperature
5
°
C to 40
°
C
Storage temperature
–20
°
C to 60
°
C
Dimensions
Approx. 430 
×
 97 
×
 288  mm  (w/h/d)
including projecting parts and controls
Mass
Approx. 4.1 kg
Supplied accessories
Remote commander  (1) 
Size  AA (R6) batteries (2)
75-ohm coaxial cable with F-type connectors (1) 
Plug  adaptor (1) (SLV-ED22PL/ED55PL/ED99PL)
Design and specifications are subject to change
without notice.
LINE-2 OUT
AUDIO OUT, phono  jack  (2)
Standard output: 327 mVrms
Load impedance: 47 kilohms
Output impedance: less than 10 kilohms
SLV-ED88:
LINE-1 IN
VIDEO IN, phono jack (1)
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
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
LINE-2 OUT
AUDIO OUT, phono  jack  (2)
Standard output: 327 mVrms
Load impedance: 47 kilohms
Output impedance: less than 10 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
– 3 –
TABLE  OF  CONTENTS
Section
Title
Page
Section
Title
Page
SERVICE NOTE ...................................................................... 4
1.
GENERAL
Getting Started .............................................................. 1-1
Basic Operations ........................................................... 1-5
Additional Operations .................................................... 1-8
Editing ............................................................................ 1-12
Additional Information ................................................... 1-13
2.
DISASSEMBLY
2-1.
Upper Case Removal .................................................... 2-1
2-2.
Rear Panel Removal ..................................................... 2-1
2-3.
PSM17-501 Board Removal ......................................... 2-1
2-4.
Front Panel Section Removal ........................................ 2-1
2-5.
Mechanism Deck Removal............................................ 2-2
2-6.
MA-377 Board Removal ................................................ 2-2
2-7.
RF-048 Board Removal (ED22TW/ED88/ED99TW) .... 2-2
2-8.
Internal Views ................................................................ 2-3
2-9.
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.
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
4-1.
Frame Schematic Diagram ............................................ 4-3
4-2.
Printed Wiring Boards and Schematic Diagrams ......... 4-5
MA-377 Printed Wiring Board ....................................... 4-5
MA-377 (Video, Audio) Schematic Diagram ................. 4-9
MA-377 (System Control) Schematic Diagram ............ 4-13
MA-377 (Servo Control) Schematic Diagram ............... 4-15
MA-377 (Hi-Fi Audio) Schematic Diagram .................... 4-17
MA-377 (Tuner) Schematic Diagram ............................ 4-19
MA-377 (I/O) Schematic Diagram ................................. 4-21
MA-377 (Mode Control) Schematic Diagram ................ 4-23
GK-12 Printed Wiring Board and
Schematic Diagram ....................................................... 4-25
RF-048 Printed Wiring Board and
Schematic Diagram ....................................................... 4-27
FJ-26, MF-321 Printed Wiring Boards and
Schematic Diagrams ..................................................... 4-29
DS-92, KK-24 Printed Wiring Boards and
Schematic Diagrams ..................................................... 4-31
PSM17-501 Printed Wiring Board ................................. 4-33
PSM17-501 Schematic Diagram ................................... 4-35
5.
INTERFACE,  IC  PIN  FUNCTION  DESCRIPTION
5-1.
System Control-Video Block Interface
(MA-377 BOARD IC101) ............................................... 5-1
5-2.
System Control-Servo Peripheral Circuit Interface
(MA-377 BOARD IC101) ............................................... 5-1
5-3.
System Control-Mechanism Block Interface
(MA-377 BOARD IC101) ............................................... 5-2
5-4.
System Control-Audio Block Interface
(MA-377 BOARD IC101) ............................................... 5-3
5-5.
Servo/System Control,
OSD Microprocessor Pin Function
(MA-377 BOARD IC101) ............................................... 5-4
5-6.
ZWEITON Processor Pin Function
(GK-12 BOARD IC001) ................................................. 5-5
6.
ERROR  CODES
....................................................... 6-1
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. Alignment Tapes ....................................................... 7-1
2-1-5. Specified I/O Level and Impedance
Input/Output terminal ............................................... 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
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 Response 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.
Par ts Arrangement Diagram for Adjustments ............... 7-6
8.
REPAIR  PARTS  LIST
8-1.
Exploded Views ............................................................. 8-1
8-1-1. Front Panel and Cabinet Assemblies ....................... 8-1
8-1-2. Chassis Assembly .................................................... 8-2
8-1-3. Mechanism Chassis Assembly (1) ........................... 8-3
8-1-4. Mechanism Chassis Assembly (2) ........................... 8-4
8-1-5. Mechanism Chassis Assembly (3) ........................... 8-5
8-2.
Electrical Parts List ....................................................... 8-6
– 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)
Front Panel
Section
(Page 2-1)
PSM17-501
Board
(Page 2-1)
Pinch Press
Block Ass’y
(Page 14)
Ground Shaft
Ass’y
(Page 13)
Mechanism
Deck
(Page 2-2)
FL Complete
 Ass’y
(Page 13)
Drum
Ass’y
(Page 13)
Rear
Panel
(Page 2-1)
RF-048
Board
(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-377
Board
(Page 2-2)
Rotary
Switch
(Page 2-2)
Tuner
Unit
Page of 75
Display

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  • Disassembly, troubleshooting, programming, maintenance, remote, adjustment, installation and setup instructions.
  • Schematics, wiring and block diagrams.
  • Printed wiring boards (PWB) and printed circuit boards (PCB).
  • Parts list (bill of materials).