SLV-LF1, SLV-LF1AS, SLV-LF1MI — Sony VCR Service Manual (repair manual)

Model
SLV-LF1 SLV-LF1AS SLV-LF1MI
Pages
77
Size
4.98 MB
Type
PDF
Document
Service Manual
Brand
Device
VCR
File
slv-lf1-slv-lf1as-slv-lf1mi.pdf
Date

View Sony SLV-LF1 / SLV-LF1AS / SLV-LF1MI Service Manual online

Australian Model
SLV-LF1AS
Hong Kong Model
SLV-LF1MI
VIDEO CASSETTE RECORDER
RMT-V313/V313A
SLV-LF1
S  MECHANISM
SLV-LF1
SERVICE MANUAL
1
2
3
4
5
6
7
8
9
0
VIDEO
Refer to the SERVICE MANUAL of VHS MECHANICAL
ADJUSTMENTS VI for MECHANICAL ADJUSTMENTS.
(9-921-647-11)
System
Color system
LF1MI:
PAL, MESECAM, NTSC 3.58,
NTSC 4.43
LF1AS:
PAL, NTSC 3.58, NTSC 4.43
TV system
LF1MI:
B/G, D/K, I, M
LF1AS:
B/G
Channel coverage
LF1MI:
B/G: VHF E2 to E12/UHF E21 to E69/
CATV S01 to S05, S1 to S41
D/K: VHF R1 to R12/UHF R21 to R69
I: VHF SA4 to SA13/UHF B21 to B69/
CATV S01 to S05, S1 to S41
M: VHF A2 to A13/UHF A14 to A69/
CATV A-8 to A-1, A to W, W+1 to W+84
LF1AS:
VHF AS0 to AS12, AS5A, AS9A
UHF AS28 to AS69
CATV S01 to S05, S1 to S41
RF output signal
LF1MI:
UHF channels 21 to 69
LF1AS:
UHF channels 28 to 69
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
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
General
Power requirements
110 - 240 V AC, 50/60 Hz (LF1MI)
220 - 240 V AC, 50 Hz (LF1AS)
Power consumption
16 W
Operating temperature
5°C to 40°C
Storage temperature
–20°C to 60°C
SPECIFICATIONS
Dimensions
Approx. 430 x 97 x 292 mm (w/h/d)
including projecting parts and controls
Mass
Approx. 4.6 kg
Supplied accessories
Remote commander (1)
R6 (size AA) batteries (2)
Aerial cable (1)
Plug adaptor (1) (LF1MI)
Design and specifications are subject to
change without notice.
– 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.
– 3 –
TABLE  OF  CONTENTS
Section
Title
Page
Section
Title
Page
Feature Difference ................................................................... 3
SERVICE NOTE ....................................................................... 5
1.
GENERAL
Getting Started .............................................................. 1-1
Basic Operations ........................................................... 1-8
Search Operations ......................................................... 1-12
Additional Operations .................................................... 1-14
Additional Information .................................................... 1-16
2.
DISASSEMBLY
2-1.
Case Front Panel Block Assembly ................................ 2-1
2-2.
DM-98 and FJ-33 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
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
GK-12 Printed Wiring Board and
Schematic Diagram .................................................. 4-29
NK-11 Printed Wiring Board and
Schematic Diagram .................................................. 4-31
FJ-33 Printed Wiring Board and
Schematic Diagram .................................................. 4-33
DM-98 Printed Wiring Board and
Schematic Diagram .................................................. 4-34E
5.
INTERFACE,  IC  PIN  FUNCTION  DESCRIPTION
5-1.
System Control-Video Block Interface
(MA-402 BOARD IC101) ............................................... 5-1
5-2.
System Control-Servo Peripheral Circuit Interface
(MA-402 BOARD IC101) ............................................... 5-1
5-3.
System Control-Mechanism Block Interface
(MA-402 BOARD IC101) ............................................... 5-2
5-4.
System Control-Audio Block Interface
(MA-402 BOARD IC101) ............................................... 5-3
5-5.
Servo/System Control,
OSD Microprocessor Pin Function
(MA-402 BOARD IC101) ............................................... 5-4
5-6.
NICAM Processor Pin Function
(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
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. Tuner System Adjustment ............................................. 7-5
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
8-2.
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)
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
(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
(Page 2-3)
Tuner
Unit
Page of 77
Display

Download Sony SLV-LF1 / SLV-LF1AS / SLV-LF1MI Service Manual (Repair Manual)

Here you can view online or download Sony SLV-LF1 / SLV-LF1AS / SLV-LF1MI Service Manual in pdf. This Service Manual can help you recover, restore, fix, disassemble and repair Sony SLV-LF1 / SLV-LF1AS / SLV-LF1MI VCR. Information contained in Sony SLV-LF1 / SLV-LF1AS / SLV-LF1MI service manual (repair manual) typically includes:

  • 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).