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SLV-ED1PL/ED4PL/ED7KR/ED8PL
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RMT-V247B/V248 |
SERVICE MANUAL |
SLV-ED7KR |
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Korean Model |
Ver 1.0 1998. 08
• Refer to the SERVICE MANUAL of VHS MECHANICAL ADJUSTMENTS VI for MECHANICAL ADJUSTMENTS. (9-921-647-11)
Philippine Model
-ED1PL/ED4PL/ED8PL
S MECHANISM
G
*The abbreviations of ED1, ED4, ED7 and ED8 contained in this service manual are indicated when these models are common to all their corresponding models as given below.
Abbreviated |
ED1 |
ED4 |
ED7 |
ED8 |
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model name |
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All model |
ED1PL |
ED4PL |
ED7KR |
ED8PL |
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names |
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SLV- |
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SPECIFICATIONS
System |
Inputs and outputs |
Timer section |
Format |
LINE-1 IN |
Clock |
VHS NTSC standard |
VIDEO IN, phono jack (1) |
Quartz locked |
Video recording system |
Input signal: 1 Vp-p, 75 ohms, unbalanced, |
Timer indication |
Rotary head helical scanning FM system |
sync negative |
12-hour cycle |
Video heads |
AUDIO IN, phono jack (1) (ED1/ED4) |
Timer setting |
Double azimuth two heads |
AUDIO IN, phono jack (2) (ED7/ED8) |
8 programs per month (max.) |
Video signal |
Input level: 327 mVrms |
Power back-up |
NTSC color, EIA standards |
Input impedance: more than 47 kilohms |
Built-in self-charging capacitor |
Tape speed |
LINE-2 IN (ED7/ED8) |
Back-up duration: up to 1 hour at a time |
SP: 33.35 mm/s |
VIDEO IN, phono jack (1) |
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EP: 11.11 mm/s |
Input signal: 1 Vp-p, 75 ohms, unbalanced, |
General |
LP: 16.67 mm/s, playback only |
sync negative |
Power requirements |
Maximum recording |
AUDIO IN, phono jack (2) |
110 – 240 V AC, 50/60 Hz |
playback time |
Input level: 327mVrms |
Power consumption |
8 hrs. in EP mode (with T-160 tape) |
Input impedane: more than 47 kilohms |
19W (ED1/ED4) |
Fast-forward and rewind time |
LINE OUT |
22W (ED7/ED8) |
Approx. 3 min. (with T-120 tape) |
VIDEO OUT, phono jack (1) |
Operating temperature |
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Output signal: 1 Vp-p, 75 ohms, unbal- |
5 ˚C to 40 ˚C |
Tuner section |
anced, sync negative |
Storage temperature |
Channel coverage |
AUDIO OUT, phono jack (1) (ED1/ED4) |
–20 ˚C to 60 ˚C |
VHF 2 to 13 |
AUDIO OUT, phono jack (2) (ED7/ED8) |
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UHF 14 to 69 |
Standard output: 327 mVrms |
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CATV A-8 to A-1, A to W, W+1 to W+84 |
Load impedance; 47 kilohms |
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Antenna |
Output impedance: less than 10 kilohms |
– Continued on next page – |
75-ohm antenna terminal for VHF/UHF |
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VIDEO CASSETTE RECORDER
MICROFILM
Dimensions
Approx. 355 × 96 × 285 mm (w/h/d): (ED1) Approx. 430 × 100 × 286 mm (w/h/d): (ED4/ED7/ED8)
including projecting parts and controls Mass
Approx. 3.7 kg: (ED1)
Approx. 4.2 kg: (ED4/ED7/ED8)
Supplied accessories
Remote commander (1) R6 (size AA) batteries (2)
75-ohm coaxial cable with F-type connectors (1) Plug adaptor (1) (ED1/ED4/ED8)
Design and specifications are subject to change without notice.
• Feature Difference
SLV- |
ED1PL |
ED4PL |
ED7KR |
ED8PL |
FEATURE |
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HEAD/CH |
2/2 |
4/4 |
4/6 |
4/6 |
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RCA REAR LINE IN/OUT |
®/® |
®/® |
®(3P)/®(3P) |
®(3P)/®(3P) |
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RCA FRONT LINE IN |
G |
G |
®(3P) |
®(3P) |
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CLICK SHUTTLE |
G |
G |
G |
® |
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REMOTE COMMANDER RMT- |
V248 |
V248 |
V247B |
V247B |
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SAFETY CHECK-OUT
After correcting the original service problem, perform the following safety checks before releasing the set to the customer:
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 transistors, that were installed during a previous repair. Point them out to the customer and recommend their replacement.
4.Look for parts which, though 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.
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.
– 2 –
TABLE OF CONTENTS
Section |
Title |
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Section |
Title |
Page |
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Feature Difference ................................................................... |
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2 |
5. |
INTERFACE, IC PIN FUNCTION DESCRIPTION |
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SERVICE NOTE ...................................................................... |
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4 |
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5-1. System Control-Video Block Interface |
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1. |
GENERAL |
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(MA-323 board IC161) .................................................. |
5-1 |
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5-2. System Control-Servo Peripheral Circuit Interface |
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(MA-323 board IC161) .................................................. |
5-1 |
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Getting Started .............................................................. |
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1-1 |
5-3. |
System Control-Mechanism Block Interface |
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Basic Operations ........................................................... |
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1-4 |
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(MA-323 board IC161) .................................................. |
5-2 |
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Additional Operations .................................................... |
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1-7 |
5-4. |
System Control-Audio Block Interface |
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Additional Information ................................................... |
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1-9 |
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(MA-323 board IC161) .................................................. |
5-3 |
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5-5. |
Servo/System/Tuner/Timer Control Microprocessor |
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Pin Function (MA-323 board IC161) ............................. |
5-4 |
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2. |
DISASSEMBLY |
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5-6. Korean Stereo Processor Pin Function |
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(NK-11 board IC1) ......................................................... |
5-5 |
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2-1. |
Upper Case Removal .................................................... |
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2-1 |
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2-2. |
NK-11 Board Removal .................................................. |
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2-1 |
6. |
ERROR CODES |
6-1 |
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2-3. |
Rear Panel Removal ..................................................... |
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2-1 |
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2-4. |
Front Panel Section Removal ....................................... |
2-1 |
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2-5. |
Power Block Removal ................................................... |
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2-2 |
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2-6. |
Mechanism Deck Removal ........................................... |
2-2 |
7. |
ADJUSTMENTS |
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2-7. |
MA-323 Board Removal ................................................ |
2-2 |
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2-8. |
Internal Views ................................................................ |
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2-3 |
7-1. |
Mechanical Adjustments ............................................... |
7-1 |
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2-9. |
Circuit Boards Location |
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2-4 |
7-2. |
Electrical Adjustments ................................................... |
7-1 |
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2-1. |
Pre-Adjustment Preparations ........................................ |
7-1 |
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3. |
BLOCK DIAGRAMS |
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2-1-1. Instruments to be Used ............................................ |
7-1 |
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2-1-2. Connection ............................................................... |
7-1 |
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2-1-3. |
Set-up of Adjustment ................................................ |
7-1 |
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3-1. |
Overall Block Diagram .................................................. |
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3-1 |
2-1-4. |
Alignment Tape ......................................................... |
7-1 |
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3-2. |
Video1 Block Diagram ................................................... |
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3-4 |
2-1-5. |
Specified I/O Level and Impedance ......................... |
7-1 |
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3-3. |
Video2 Block Diagram ................................................... |
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3-5 |
2-1-6. |
Adjusting Sequence ................................................. |
7-2 |
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3-4. Servo/System Control Block Diagram .......................... |
3-7 |
2-2. |
Power Supply Adjustment ............................................. |
7-2 |
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3-5. |
Audio Block Diagram ..................................................... |
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3-9 |
2-2-1. |
Power Supply Check ................................................ |
7-2 |
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3-6. |
Tuner Block Diagram ..................................................... |
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3-11 |
2-2-2. |
+6V Adjustment ........................................................ |
7-2 |
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3-7. Mode Control Block Diagram ........................................ |
3-13 |
2-3. |
Servo System Adjustment ............................................. |
7-2 |
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3-8. |
Power Block Diagram .................................................... |
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3-15 |
2-3-1. |
Switching Position Adjustment ................................. |
7-2 |
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2-4. |
Audio System Adjustments ........................................... |
7-3 |
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2-4-1. Hi-Fi Audio System Adjustment ............................... |
7-3 |
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4. |
PRINTED WIRING BOARDS AND |
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1. |
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AF Switching Position Adjustment ........................... |
7-3 |
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SCHEMATIC DIAGRAMS |
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2. |
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Frequency Response Check .................................... |
7-3 |
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3. |
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Overall Level Characteristic and |
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4-1. |
Frame Schematic Diagram |
4-3 |
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Distortion Factor Check ........................................... |
7-4 |
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4. |
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Overall S/N Check |
7-4 |
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4-2. |
Printed Wiring Boards and Schematic Diagrams |
4-5 |
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2-4-2. Normal Audio System Adjustment |
7-4 |
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MA-323 (Head Amp) Schematic Diagram |
4-5 |
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ACE Head Adjustment |
7-4 |
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MA-323 Printed Wiring Board |
4-9 |
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2. |
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E-E Output Level Check |
7-4 |
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MA-323 (Video, Audio) Schematic Diagram |
4-11 |
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3. |
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Frequency Responce Check |
7-4 |
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MA-323 (System Control) Schematic Diagram |
4-15 |
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4. |
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Overall Level Characteristic and Distortion |
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MA-323 (Servo Control) Schematic Diagram |
4-17 |
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Factor Check |
7-5 |
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MA-323 (Hi-Fi Audio) Schematic Diagram |
4-19 |
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5. |
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Overall S/N Check |
7-5 |
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MA-323 (IO) Schematic Diagram |
4-21 |
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2-5. |
Tuner System Adjustment |
7-5 |
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MA-323 (Tuner) Schematic Diagram |
4-23 |
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2-5-1. |
Separation Adjustment |
7-5 |
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MA-323 (Mode Control) Schematic Diagram |
4-25 |
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2-6. Parts Arrangement Diagram for Adjustments |
7-6 |
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MA-323 (FL Driver) Schematic Diagram |
4-27 |
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MA-323 (Power Supply) Schematic Diagram ............... |
4-29 |
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DS-80 Printed wiring Board and |
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8. |
REPAIR PARTS LIST |
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Schematic Diagram ....................................................... |
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4-31 |
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NK-11 Printed wiring Board and |
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8-1. |
Exploded Views |
8-1 |
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Schematic Diagram ....................................................... |
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4-33 |
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DM-76, MF-312 |
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8-1-1. |
Front Panel and Cabinet Assemblies (ED1) ........... |
8-1 |
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Printed Wiring Board and Schematic Diagram ............. |
4-35 |
8-1-2. |
Chassis Assembly (ED1) ......................................... |
8-2 |
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HS-921SF/921SF1 Printed Wiring Board ..................... |
4-37 |
8-1-3. |
Front panel and Cabinet Assemblies |
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HS-921SF/921SF1 Schematic Diagram ....................... |
4-39 |
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(ED4/ED7/ED8) ........................................................ |
8-3 |
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SR-708 Printed Wiring Board ........................................ |
4-41 |
8-1-4. |
Chassis Assembly (ED4/ED7/EZ8) ......................... |
8-4 |
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SR-708 Schematic Diagram ......................................... |
4-43 |
8-1-5. |
Mechanism Chassis Assembly (1) ........................... |
8-5 |
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8-1-6. Mechanism Chassis Assembly (2) ........................... |
8-6 |
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8-1-7. Mechanism Chassis Assembly (3) ........................... |
8-7 |
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8-2. |
Electrical Parts List ....................................................... |
8-8 |
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– 3 –
SERVICE NOTE
1. DISASSEMBLY
• This set can be disassembled in the order shown below.
Note: Pages in |
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indicated pages in the SERVICE MANUAL. |
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Pages in |
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indicated pages in the VHS MECHANICAL ADJUSTMENT MANUAL VI. |
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Set
Upper case (Page 2-1)
Front Panel |
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Pinch Press |
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Ground Shaft |
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Rear |
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Power |
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NK-11Board |
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Section |
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Block Ass’y |
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Ass’y |
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Panel |
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Block |
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(ED7) |
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(Page 2-1) |
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(Page 14) |
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(Page 13) |
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(Page 2-1) |
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(Page 2-2) |
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(Page 2-1) |
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FL Complete |
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Mechanism |
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Drum |
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Ass’y |
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Deck |
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Ass’y |
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(Page 13) |
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(Page 2-2) |
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(Page 13) |
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Retainer |
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Rubber |
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Rubber |
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MA-323 |
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Plate |
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Belt |
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Belt |
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Board |
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(Page 22) |
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(Page 15) |
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(Page 15) |
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(Page 2-2) |
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FL Slider |
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Capstan |
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Pully Gear |
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Rotary |
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Tuner |
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Block Ass’y |
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Motor |
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Ass’y |
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Switch |
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Unit |
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(Page 22) |
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(Page 15) |
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(Page 29) |
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(Page 2-2) |
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Cam Gear |
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Cam Motor |
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Reel Direct |
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Retainer |
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Ass’y |
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(Page 23) |
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(Page 31) |
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(Page 30) |
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Rubber |
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Cam Motor |
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Belt |
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(Page 31) |
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(Page 15) |
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Slider |
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(Page 26) |
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Loading |
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Gear (T, S) |
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(Page 28) |
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– 4 –
SECTION 1 |
SLV-ED1/ED4/ED7/ED8 |
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This section is extracted from SLV- |
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GENERAL |
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ED1PL instruction manual. |
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1-1
1-2
1-3
1-4
1-5
1-6
1-7
1-8
11-10-10E
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SECTION 2 |
SLV-ED1/ED4/ED7/ED8 |
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DISASSEMBLY |
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Note: Follow the disassembly procedure in the numerical order given. |
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2-1. UPPER CASE REMOVAL |
2-3. |
REAR PANEL REMOVAL |
3 Upper case |
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7 Rear panel |
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1 Two tapping screws |
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6 Two claws |
2 Two tapping screws |
1 Power cord |
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2 Harness |
4 Claw
3 Claw
(ED4/ED7/ED8)
5 Three claws
2-2. NK-11 BOARD REMOVAL |
2-4. FRONT PANEL SECTION REMOVAL |
2 NK-11 board |
ED7/ED8 |
(ED7) |
3 Connector |
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(CN423) |
1 Connector |
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(CN751) |
2 Flat cable |
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(CN105) |
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ED4/ED7/ED8 |
4 Three claws
1 Flat cable (CN424)
6 Front panel section
5 Three claws
2-1
2-5. POWER BLOCK REMOVAL |
2-7. MA-323 BOARD REMOVAL |
2 Power cord |
1 Five screws |
(CN101) |
(B3) |
3 Two screws |
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(B3) |
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2 MA-323 |
4 Power block |
board |
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1Connector (CN600)
ED4/ED7/ED8
2-6. MECHANISM DECK REMOVAL
4 Connector
5 Connector (ACE head ) (FE head )
9 Two screws (BVTP3 × 12)
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1 Flat cable |
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ED1 |
6 Screw |
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(B3) |
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7 Earth lug |
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2 Connector |
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!¡ Mechanism |
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deck |
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(CN101 ) |
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!º Screw |
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(BVTP3 × 12) |
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ED4/ED7/ |
8 Screw |
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(B3) |
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ED8 |
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3 Flexible board |
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3
Note: When mounting the mechanism deck, first align ¢mark on the rotary switch.
2-2
2-8. INTERNAL VIEWS
Drum assembly (M901) (DZH-71D-R) 1-759-455-11 (ED1)
Drum assembly (M901) (DZH-73D/Z-RP) 8-839-036-04 (ED4)
Drum assembly (M901) (DZH-94A/ZRP-R) 8-839-044-02 (ED7/ED8)
FE head 1-500-144-11
Q100
Tape top sensor 8-729-043-84
Capstan motor 1-698-971-11
ACE head assembly
A-6759-620-A
D102
Tape top/end LED 8-719-048-26
Q101
Tape end sensor 8-729-043-84
Drum assembly (M901) (DZH-71D-R) 1-759-455-11 (ED1)
Drum assembly (M901) (DZH-73D/Z-RP) 8-839-036-04 (ED4)
Drum assembly (M901) (DZH-94A/ZRP-R) 8-839-044-02 (ED7/ED8)
Cam motor assembly X-3947-577-1
2-3
2-9. CIRCUIT BOARDS LOCATION |
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ED1 |
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MA-323 |
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VIDEO, AUDIO, I/O, |
POWER BLOCK (HS-921SF) |
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( SERVO/SYSTEM CONTROL, TUNER ) |
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(POWER SUPPLY) |
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DS-80
(MODE CONTROL)
ED4/ED7/ED8
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MA-323 |
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VIDEO, AUDIO, I/O, |
NK-11 (ED7) |
( SERVO/SYSTEM CONTROL, TUNER ) |
(KOREAN STEREO) |
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MF-312
( MODE CONTROL, ) FRONT IN
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POWER BLOCK (HS-921SF1)(ED4) |
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DM-76 |
POWER BLOCK (SR-708) (ED7/ED8) |
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(POWER SUPPLY) |
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(MODE CONTROL) |
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22-4-4E
SLV-ED1/ED4/ED7/ED8
SECTION 3
BLOCK DIAGRAM
3-1. OVERALL BLOCK DIAGRAM
3-1 |
3-2 |
SLV-ED1/ED4/ED7/ED8
3-2. VIDEO1 BLOCK DIAGRAM
IC501 4 REC |
IC501 !• REC/PB |
2.8 Vp-p (H) |
2.2 Vp-p (H) |
IC501 @™ PB
800m Vp-p (H)
IC501 @• REC
100m Vp-p (H)
IC501 !¶ REC/PB
5.2 Vp-p (2 V)
IC501 @¡ REC
4.6 Vp-p (2 V)
3-4
SLV-ED1/ED4/ED7/ED8
3-3. VIDEO2 BLOCK DIAGRAM
IC202 5 REC/PB |
IC202 8 REC/PB |
IC202 1 REC/PB |
IC201 4 REC/PB |
IC201 &¶ REC/PB |
IC201 &¡ REC/PB |
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360m Vp-p (H) |
REC: 250m Vp-p (H) |
REC: 400m Vp-p (H) |
560m Vp-p (H) |
REC: 470m Vp-p (H) |
440m Vp-p (H) |
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PB: 300m Vp-p (H) |
PB: 500m Vp-p (H) |
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PB: 260m Vp-p (H) |
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IC201 ^º REC
1 Vp-p (H)
IC2014PB
840m Vp-p (H)
IC2016REC
IC201 %º PB
400m Vp-p (H)
640m Vp-p (H)
IC2017PB |
IC201! REC |
IC201 %¶ REC/PB
2.2 Vp-p (H)
IC161 $£,$ REC/PB
2 Vp-p (H)
IC201 %£ REC/PB |
IC161 %™ REC/PB |
5 Vp-p (H) |
2.4 Vp-p (14.318 MHz) |
840m Vp-p (H) |
370m Vp-p (H) |
IC201@§REC/PB
1.1 Vp-p (3.58 MHz)
3-5 |
3-6 |
SLV-ED1/ED4/ED7/ED8
3-4. SERVO/SYSTEM CONTROL BLOCK DIAGRAM
IC161 &™ REC/PB
3.2 Vp-p (10 MHz)
IC161 @¢ REC/PB
4.9 Vp-p (2 V)
IC161 #• REC/PB |
IC161 #ª REC/PB |
IC161 ^ª REC/PB |
4.2 Vp-p (360 Hz) |
4.7 Vp-p (2 V) |
2.2 Vp-p (32.768 kHz) |
IC161 $º REC/PB
4 Vp-p (1 kHz)
IC161 #¡ REC/PB
5 Vp-p (2 V)
IC161 #™ REC/PB
5 Vp-p (2 V)
3-7 |
3-8 |
SLV-ED1/ED4/ED7/ED8
3-5. AUDIO BLOCK DIAGRAM
3-9 |
3-10 |
SLV-ED1/ED4/ED7/ED8
3-6. TUNER BLOCK DIAGRAM
IC1 !§ REC/PB
740m Vp-p (24.576 MHz)
3-11 |
3-12 |
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