MICROFILM
SERVICE MANUAL
African Model
SLV-ED3AF
Australian Model
SLV-EZ1AZ/EZ4AZ/EZ7AS
E Model
SLV-ED1PS/ED4PS/ED6PS/ED7MN/ED7FS
French Model
SLV-ED7FS
Hong Kong Model
SLV-ED7MI
Irish Model
SLV-ED7MI
ME Model
SLV-ED1ME/ED1SG/ED4ME/ED4SG/
ED5ME/ED6ME/ED6SG/ED7MI
Newzealand Model
SLV-EZ7NZ
South Afrifca Model
SLV-ED2SA/ED7MI
UK Model
SLV-ED7MI
RMT-V245A/V245B/V247/V247A/V248A
VIDEO CASSETTE RECORDER
SLV-ED1ME/ED1PS/ED1SG/ED2SA/ED3AF/ED4ME/ED4PS/ED4SG/ED5ME/
ED6ME/ED6PS/ED6SG/ED7FS/ED7MI/ED7MN/EZ1AZ/EZ4AZ/EZ7AS/EZ7NZ
G
· Refer to the SERVICE MANUAL of VHS MECHANICAL
ADJUSTMENTS VI for MECHANICAL ADJUSTMENTS.
(9-921-647-11)
* The abbreviations of ED1, ED2, ED3, ED4, ED5, ED6, ED7, EZ1, EZ4 and
EZ7 contained in this service manual are indicated when these models are
common to all their corresponding models as given below.
Photo: SLV-ED1
S MECHANISM
ED1ME
ED1PS
ED1SG
ED1
Abbreviated
model name
All model
names
SLV-
ED2SA
ED2
ED3AF
ED3
ED4ME
ED4PS
ED4SG
ED4
ED5ME
ED5
ED6ME
ED6PS
ED6SG
ED6
ED7FS
ED7MI
ED7MN
ED7
EZ1AZ
EZ1
EZ4AZ
EZ4
EZ7AS
EZ7NZ
EZ7
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
! 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 PUB-
LISHED BY SONY.
SPECIFICATIONS
System
Color system
ED1/ED2/ED4/ED5/ED6/ED7MI/ED7MN:
PAL, MESECAM, NTSC 3.58,
NTSC 4.43
ED3/ED7FS:
PAL, SECAM, MESECAM, NTSC 3.58,
NTSC 4.43
EZ1/EZ4/EZ7:
PAL, NTSC 4.43
TV system
ED1/ED2/ED3/ED4/ED6/ED7MN:
B/G, D/K, I
ED5/ED7FS/ED7MI:
B/G, D/K, I, M
EZ1/EZ4/EZ7
B/G
Channel coverage
ED1/ED2/ED3/ED4/ED5/ED6/ED7:
B/G: VHF E2 to E12/UHF E21 to E69/
CATV S01 to S05, S1 to S41
D/K: VHF R1 to R12, C1 to C12/UHF R21
to R69, C13 to C57
I: VHF SA4 to SA13/UHF B21 to B69/
CATV S01 to S05, S1 to S41
M (ED5/ED7FS/ED7MI): VHF A2 to A13/
UHF A14 to A69/CATV A-8 to A1, A to W,
W+1 to W+84
EZ1/EZ4 (COUNTRY is set to AUS),
EZ7AS:
VHF AS0 to AS12, AS5A, AS9A
UHF AS28 to AS69
CATV S01 to S05, S1 to S41
EZ1/EZ4 (COUNTRY is set to NZ),
EZ7NZ:
VHF NZ1 to NZ11
UHF E21 to E69
CATV S01 to S05, S1 to S41
RF output signal
ED1/ED2/ED3/ED4/ED5/ED6/ED7/
EZ7NZ:
UHF channels 21 to 69
EZ1/EZ4/EZ7AS:
UHF channels 28 to 69
Aerial out
75-ohm asymmetrical aerial socket
Inputs and outputs
LINE-IN (ED1/ED2/EZ1/EZ4/EZ7)
LINE-1-IN (ED3/ED4/ED5/ED6/ED7)
VIDEO IN, phono jack (1)
Input signal: 1 Vp-p, 75 ohms, unbalanced,
sync negative
AUDIO IN (MONO), phono jack (1) (ED1/
ED2/ED3/ED4/ED5/EZ1/EZ4)
AUDIO IN, phono jack (2) (ED6/ED7/EZ7)
Input level: 327 mVrms
Input impedance: more than 47 kilohms
LINE-2 IN (ED4/ED5/ED6/ED7FS/ED7MI)
VIDEO IN, phono jack (1)
Input signal: 1Vp-p, 75 ohms, unbalanced,
sync negative
AUDIO IN (MONO), phono jack (2) (ED4/
ED5)
AUDIO IN, phono jack (2) (ED6/ED7FS/
ED7MI)
Input level: 327mVrms
Input impedane: more than 47 kilohms
LINE-2 IN (SAT IN) (ED3/ED7MN)
LINE-3 IN (SAT IN) (ED4/ED5/ED6/ED7FS/
ED7MI)
VIDEO IN, phono jack (1)
Input signal: 1Vp-p, 75 ohms, unbalanced,
sync negative
AUDIO IN (MONO), phono jack (2) (ED3/
ED4/ED5)
AUDIO IN, phono jack (2) (ED6/ED7)
Input level: 327mVrms
Input impedane: more than 47 kilohms
LINE OUT
VIDEO OUT, phono jack (1)
Output signal: 1 Vp-p, 75 ohms, unbal-
anced,
sync negative
AUDIO OUT, phono jack (1) (ED1/ED2/
EZ1/EZ4)
AUDIO OUT (MONO), phono jack (2)
(ED3/ED4/ED5)
AUDIO OUT, phono jack (2) (ED6/ED7/
EZ7)
Standard output: 327 mVrms
Load impedance; 47 kilohms
Output impedance: less than 10 kilohms
General
Power requirements
110 240 V AC, 50/60 Hz (ED1/ED2/ED3/
ED4/ED5/ED6/ED7)
220-240 V AC, 50 Hz (EZ1/EZ4/EZ7)
Power consumption
19W (ED1/ED2/ED3/ED4/ED5/EZ1/EZ4)
20W (ED6)
22W (ED7/EZ7)
Operating temperature
5 °C to 40 °C
Storage temperature
20 °C to 60 °C
Dimensions
Approx. 355
× 102 × 278 mm (w/h/d):
(ED1/ED2/EZ1)
Approx. 430
× 100 × 286 mm (w/h/d):
(ED3/ED4/ED5/ED6/ED7/EZ4/EZ7)
including projecting parts and controls
Mass
Approx. 3.7 kg: (ED1/ED2/EZ1)
Approx. 4.2 kg: (ED3/ED4/ED5/ED6/ED7/
EZ4/EZ7)
Supplied accessories
Remote commander (1)
R6 (size AA) batteries (2)
Aerial cable (1)
Plug adaptor (1) (ED1ME/ED1SG/ED3/
ED4ME/ED4SG/ED6ME/ED6SG/ED7FS)
Design and specifications are subject to change
without notice.
3
SLV-
ED 1
ED 2
ED 3
ED 4
ED 5
ED 6
ED7
ED7
ED7
FEATURE
FS
MI
MN
HEAD/CH
2/2
2/2
2/2
4/4
4/4
4/6
4/6
4/6
4/6
NTSC
(3.58) (REC/PB)
g
g
ggg
gg
gg
(4.43) (REC/PB)
g
g
ggg
gg
gg
SECAM
(REC/PB)
gg
ME-SECAM
(REC/PB)
g
g
ggg
gg
gg
REC (NTSC)
(SP/EP)
g/Gg/Gg/G
g
gg
gg
g
(PAL)
(SP/LP)
g/Gg/Gg/G
g
gg
gg
g
PLAY (NTSC)
(SP/LP/EP)
g/G/Gg/G/Gg/G/G
g
gg
gg
g
(PAL)
(SP/LP)
g/Gg/Gg/G
g
gg
gg
g
RCA REAR LINE IN/OUT
gg
g (3pin g (3pin g (3pin
gg
gg
Y.B.B)
Y.B.B)
Y.B.B)
ADDITIONAL REAR INPUT (SAT IN)
g (3pin g (3pin g (3pin
gg
gg
Y.B.B)
Y.B.B)
Y.B.B)
RCA FRONT LINE IN/OUT
g (3pin g (3pin
g/Gg/Gg/G
Y.B.B)/
G Y.B.B)/G
MODULATOR SYSTEM
G/K/I
G/K/I
G/K/I
G/K/I G/K/I//M G/K/I G/K/I/M G/K/I/M G/K/I
CLICK SHUTTLE
gg
REMOTE COMMANDER
RMT-
V248A V245B V248A
V247
V247
V247
V247
V247A V247A
· Feature Difference
SLV-
EZ 1
EZ 4
EZ 7
FEATURE
HEAD/CH
2/2
4/4
4/6
NTSC
(3.58) (REC/PB)
(4.43) (REC/PB)
G/gG/gG/g
SECAM
(REC/PB)
ME-SECAM
(REC/PB)
REC (NTSC)
(SP/EP)
(PAL)
(SP/LP)
g/Gg
g
PLAY (NTSC)
(SP/LP/EP)
g/G/Gg
g
(PAL)
(SP/LP)
g/Gg
g
RCA REAR LINE IN/OUT
ggg
ADDITIONAL REAR INPUT (SAT IN)
RCA FRONT LINE IN/OUT
MODULATOR SYSTEM
G
G
G
CLICK SHUTTLE
REMOTE COMMANDER
RMT-
V245B V245A V245A
4
TABLE OF CONTENTS
Section
Title
Page
Section
Title
Page
Feature Difference ................................................................... 3
SERVICE NOTE ...................................................................... 5
1.
GENERAL
Getting Started .............................................................. 1-1
Basic Operations ........................................................... 1-4
Additional Operations .................................................... 1-8
Editing ............................................................................ 1-9
Additional Information ................................................... 1-10
2.
DISASSEMBLY
2-1.
Upper Case Removal .................................................... 2-1
2-2.
NK-11, RJ-80, SE-73 Board Removal .......................... 2-1
2-3.
Rear Panel Removal ..................................................... 2-1
2-4.
Front Panel Section Removal ....................................... 2-1
2-5.
Power Block Removal ................................................... 2-2
2-6.
Mechanism Deck Removal ........................................... 2-2
2-7.
MA-323 Board Removal ................................................ 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.
Servo/System Control Block Diagram .......................... 3-3
3-3.
Video Block Diagram ..................................................... 3-5
3-4.
Audio Block Diagram ..................................................... 3-9
3-5.
Tuner Block Diagram ..................................................... 3-11
3-6.
Mode Control Block Diagram ........................................ 3-13
3-7.
Power Block Diagram .................................................... 3-15
4.
PRINTED WIRING BOARDS AND
SCHEMATIC DIAGRAMS
4-1.
Frame Schematic Diagram ........................................... 4-1
4-2.
Printed Wiring Boards and Schematic Diagrams ......... 4-4
MA-323 Printed Wiring Board ....................................... 4-5
MA-323 (Head Amp) Schematic Diagram .................... 4-7
MA-323 (Video, Audio) Schematic Diagram ................. 4-11
MA-323 (System Control) Schematic Diagram ............ 4-15
MA-323 (Servo Control) Schematic Diagram ............... 4-18
MA-323 (Hi-Fi Audio) Schematic Diagram .................... 4-21
MA-323 (IO) Schematic Diagram .................................. 4-23
MA-323 (Tuner) Schematic Diagram ............................ 4-25
MA-323 (Mode Control) Schematic Diagram ............... 4-27
MA-323 (FL Driver) Schematic Diagram ....................... 4-29
MA-323 (Power Supply) Schematic Diagram ............... 4-31
SE-73 Printed Wiring Board and
Schematic Diagram ....................................................... 4-33
DS-80, NK-11 Printed wiring Board and
Schematic Diagram ....................................................... 4-36
DM-76, MF-312, RJ-80
Printed Wiring Board and Schematic Diagram ............. 4-39
HS-921SF/921SF1 Schematic Diagram ....................... 4-43
HS-921SF/921SF1, SR-708/718
Printed Wiring Board ..................................................... 4-45
SR-708/718 Schematic Diagram .................................. 4-47
5.
INTERFACE, IC PIN FUNCTION DESCRIPTION
5-1.
System Control-Video Block Interface
(MA-323 board IC161) .................................................. 5-1
5-2.
System Control-Servo Peripheral Circuit Interface
(MA-323 board IC161) .................................................. 5-1
5-3.
System Control-Mechanism Interface
(MA-323 board IC161) .................................................. 5-2
5-4.
System Control-Audio Block Interface
(MA-323 board IC161) .................................................. 5-3
5-5.
Servo/System/Tuner/Timer Control Microprocessor
Pin Function (MA-323 board IC161) ............................. 5-4
5-6.
NICAM Processor Pin Function (NK-11 board IC1) ..... 5-5
6.
ERROR CODE .......................................................... 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 Tape ......................................................... 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. 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 Responce Check .................................... 7-4
4.
Overall Level Characteristic and Distortion
Factor Check ............................................................ 7-5
5.
Overall S/N Check .................................................... 7-5
2-5.
Parts Arrangement Diagram for Adjustments ............... 7-6
8.
REPAIR PARTS LIST
8-1.
Exploded Views ............................................................. 8-1
8-1-1. Front Panel and Cabinet Assemblies
(ED1/ED2/EZ1) ........................................................ 8-1
8-1-2. Chassis Assembly (ED1/ED2/EZ1) .......................... 8-2
8-1-3. Front panel and Cabinet Assemblies
(Except ED1/ED2/EZ1) ............................................ 8-3
8-1-4. Chassis Assembly (Except ED1/ED2/EZ1) ............. 8-5
8-1-5. Mechanism Chassis Assembly (1) ........................... 8-6
8-1-6. Mechanism Chassis Assembly (2) ........................... 8-7
8-1-7. Mechanism Chassis Assembly (3) ........................... 8-8
8-2.
Electrical Parts List ........................................................ 8-9
5
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.
NK-11 Board (ED7:
MI, MN/EZ7NZ)
(Page 2-1)
Set
Upper case
(Page 2-1)
Front Panel
Section
(Page 2-1)
Power
Block
(Page 2-2)
SE-73 Board
(ED3/ED7FS)
(Page 2-1)
Pinch Press
Block Ass'y
(Page 14)
Ground Shaft
Ass'y
(Page 13)
RJ-80 Board
(EXCEPT EZ4/EZ7)
(Page 2-1)
Mechanism
Deck
(Page 2-2)
FL Complete
Ass'y
(Page 13)
Drum
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-323
Board
(Page 2-2)
Rubber
Belt
(Page 15)
Capstan
Motor
(Page 15)
FL Slider
Block Ass'y
(Page 22)
Rotary
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)