Sony SLV-ED8KR, SLV-ED9KR Service Manual

MICROFILM
SERVICE MANUAL
Korean Model
SLV-ED8KR/ED9KR
RMT-V244/V246
SPECIFICATIONS
G
Refer to the SERVICE MANUAL of VHS MECHANICAL
(9-921-647-11)
* The abbreviations of ED8 and ED9 contained in this service manual are indi-
cated when these models are common to all their corresponding models as
given below.
Photo: SLV-ED8KR
S MECHANISM
ED8KR
ED8
Abbreviated
model name
All model
names
SLV-
ED9KR
ED9
VIDEO CASSETTE RECORDER
– 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 ! 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
SERVICE NOTE...................................................................... 4
1. GENERAL
Getting Started .............................................................. 1-1
Basic Operations ........................................................... 1-5
Additional Operations.................................................... 1-8
Editing............................................................................ 1-11
Additional Information ................................................... 1-12
2. DISASSEMBLY
2-1. Upper Case Removal.................................................... 2-1
2-2. RJ-79, NK-11 Board Removal....................................... 2-1
2-3. Rear Panel Removal ..................................................... 2-1
2-4. Front Panel Section Removal ....................................... 2-1
2-5. FR-137, DM-77, SW-307, IO-64 Board
Removal (ED9).............................................................. 2-2
2-6. Control Switch Block Removal (ED9) ........................... 2-2
2-7. FR-137, DM-77, IO-64 Board Removal (ED8) ............. 2-2
2-8. Mechanism Deck Removal ........................................... 2-2
2-9. Power Block Removal ................................................... 2-3
2-10. PS-414, MA-325 board Removal .................................. 2-3
2-11. Internal Views................................................................ 2-4
2-12. Circuit Boards Location ................................................. 2-5
3. BLOCK DIAGRAMS
3-1. Overall Block Diagram .................................................. 3-1
3-2. Video1 Block Diagram ................................................... 3-4
3-3. Video2 Block Diagram ................................................... 3-5
3-4. Servo/System control Block Diagram ........................... 3-7
3-5. Audio Block Diagram..................................................... 3-9
3-6. Tuner Block Diagram ..................................................... 3-11
3-7. Mode Control Block Diagram ........................................ 3-13
3-8. Power Block Diagram.................................................... 3-15
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-325 (Head Amp) Schematic Diagram .................... 4-5
MA-325 Printed Wiring Board ....................................... 4-9
MA-325 (Video, Audio) Schematic Diagram................. 4-11
MA-325 (System Control) Schematic Diagram ............ 4-15
MA-325 (Servo Control) Schematic Diagram ............... 4-17
MA-325 (Bias, CTL) Schematic Diagram ..................... 4-19
MA-325 (Hi-Fi Audio) Schematic Diagram .................... 4-21
MA-325 (OSD) Schematic Diagram.............................. 4-23
MA-325 (IO) , RJ-79 Schematic Diagrams and
RJ-79 Printed Wiring Board .......................................... 4-25
MA-325 (Tuner) Schematic Diagram ............................ 4-27
NK-11 Printed Wiring Board and
Schematic Diagram ....................................................... 4-29
DM-77, IO-64 Printed Wiring Boards and
Schematic Diagrams ..................................................... 4-31
FR-137, SW-307 Printed Wiring Boards....................... 4-33
FR-137, SW-307 Schematic Diagram .......................... 4-35
PS-414 Printed Wiring Board........................................ 4-37
PS-414 Schematic Diagram.......................................... 4-39
SR-718 Printed Wiring Board ....................................... 4-41
SR-718 Schematic Diagram ......................................... 4-43
5. INTERFACE, IC PIN FUNCTION DESCRIPTION
5-1. System Control-Video Block Interface
(MA-325 board IC161) .................................................. 5-1
5-2. System Control-Servo Peripheral Circuit Interface
(MA-325 board IC161) .................................................. 5-1
5-3. System Control-Mechanism Block Interface
(MA-325 board IC161) .................................................. 5-2
5-4. System Control-System Control Peripheral Circuit
Interface (MA-325 board IC161) ................................... 5-3
5-5. System Control-Hi-Fi Audio Block Interface
(MA-325 board IC161) .................................................. 5-3
5-6. Servo/System Control Microprocessor Pin Function
(MA-325 board IC161) .................................................. 5-4
5-7. Timer/Tuner Control Microprocessor Pin Function
(FR-137 board IC301) ................................................... 5-5
5-8. KOREAN Processor Pin Function
(NK-11 board IC1) ......................................................... 5-6
6. ERROR CODE.......................................................... 6-1
7. ADJUSTMENTS
7-1. Mechanical Adjustments ............................................... 7-1
7-2. Adjustments................................................................... 7-1
2-1. EEP ROM Initial Data Input .......................................... 7-1
7-3. Electrical Adjustments................................................... 7-1
3-1. Pre-Adjustment Preparations........................................ 7-1
3-1-1. Instruments to be Used............................................ 7-1
3-1-2. Connection ............................................................... 7-1
3-1-3. Set-up of Adjustment ............................................... 7-2
3-1-4. Alignment T apes....................................................... 7-2
3-1-5. Specified I/O Level and Impedance
Input/Output T erminal............................................... 7-2
3-1-6. Adjusting Sequence ................................................. 7-2
3-2. Power Supply Adjustment ............................................. 7-2
3-2-1. Power Supply Check................................................ 7-2
3-2-2. +6 V Adjustment ....................................................... 7-2
3-3. Servo System Adjustment............................................. 7-3
3-3-1. RF Switching Position Adjustment........................... 7-3
3-4. Audio System Adjustments ........................................... 7-3
3-4-1. Hi-Fi Audio System Adjustment ............................... 7-3
1. AF Switching Position Adjustment........................... 7-3
2. Frequency Response Check.................................... 7-4
3. Overall Level Characteristic and
Distortion Factor Check ........................................... 7-4
4. Overall S/N Check.................................................... 7-4
3-4-2. Normal Audio System Adjustment ........................... 7-5
1. ACE Head Adjustment ............................................. 7-5
2. E-E Output Level Check........................................... 7-5
3. Frequency Responce Check.................................... 7-5
4. Overall Level Characteristic and Distortion
Factor Check ............................................................ 7-5
5. Overall S/N Check.................................................... 7-5
3-5. Video System Adjustment ............................................. 7-5
3-5-1. VCO Oscillation Frequency Adjustment .................. 7-5
3-6. 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 (ED8)............ 8-1
8-1-2. Front Panel and Cabinet Assemblies (ED9)............ 8-2
8-1-3. Chassis Assembly .................................................... 8-3
8-1-4. Mechanism Chassis Assembly (1)........................... 8-4
8-1-5. Mechanism Chassis Assembly (2)........................... 8-5
8-1-6. Mechanism Chassis Assembly (3)........................... 8-6
8-2. Electrical Parts List........................................................ 8-7
– 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.
NK-11 Board
(Page 2-1)
Set
Upper case
(Page 2-1)
Front Panel
Section
(Page 2-1)
Power
Block
(Page 2-3)
Rear Panel
(Page 2-1)
Pinch Press
Block Ass’y
(Page 14)
Ground Shaft
Ass’y
(Page 13)
Drum Ass’y
(Page 13)
RJ-79 Board
(Page 2-1)
Mechanism
Deck
(Page 2-2)
FR-137 Board
(Page 2-2)
FL complete
Ass’y
(Page 13)
FL Slider
Block Ass’y
(Page 22)
DM-77 Board
(Page 2-2)
SW-307 Board
(ED9)
(Page 2-2)
Rubber
Belt
(Page 15)
IO-64 Board
(Page 2-2)
Retainer
Plate
(Page 22)
Rubber
Belt
(Page 15)
Capstan
Motor
(Page 15)
Control Switch
Block (ED9)
(Page 2-2)
Rotary
Switch
(Page 2-2)
Tuner
Unit
Pully Gear
Ass’y
(Page 29)
Cam Gear
(Page 23)
Cam Motor
Retainer
(Page 31)
Rubber
Belt
(Page 15)
Reel Direct
Ass’y
(Page 30)
Slider
(Page 26)
Loading
Gear (T, S)
(Page 28)
Cam Motor
(Page 31)
MA-325 Board
(Page 2-3)
PS-414 Board
(Page 2-3)
1-1
SECTION 1

GENERAL

This section is extracted from SLV -ED8KR
instruction manual (3-861-812-11).
SLV-ED8/ED9
1-2
1-3
1-4
1-5
1-6
1-7
1-8
1-9
1-10
1-11
1-12
1-13
1-13 E
2-1
Note: Follow the disassembly procedure in the numerical order given.
SECTION 2

DISASSEMBLY

2-1. UPPER CASE REMOVAL 2-3. REAR PANEL REMOVAL
2-2. RJ-79, NK-11 BOARD REMOVAL
2-4. FRONT PANEL SECTION REMOVAL
SLV-ED8/ED9
1 Two tapping screws
2 Two tapping screws
3 Upper case
5 NK-11 board
1 Two connectors
(CN951, 952)
4 Connector
(CN751)
3 RJ-79 board
2 Four screws
(BVTP3 × 12)
3 Harness
5 Two claws
4 Three claws
6 Claw
7 Claw
8 Rear panel
2 Connector
(CN361)
1 Two connectors
(CN101, 901)
1 Connector
(CN423)
2 Flat cable
(CN105)
3 Two claws
4 Claw
5 Three claws
6 Front panel section
2-2
2-5. FR-137, DM-77, SW-307, IO-64 BOARD
REMOVAL (ED9)
2-8. MECHANISM DECK REMOVAL
2-6. CONTROL SWITCH BLOCK REMOVAL
(ED9)
2-7. FR-137, DM-77, IO-64 BOARD
REMOVAL (ED8)
8 DM-77 board
!™ IO-64
board
1 Flat cable
(CN309)
5 Flat cable
(CN308)
9 Flexible board
(CN451)
6 Flexible board
(CN302)
7 Four screws
(B2.6 × 8)
3 Four screws
(B2.6 × 8)
2 Screw
(B2.6 × 8)
4 FR-137 board
SW-307 board
0 Two screws
(B2.6 × 8)
5 Control switch block
2 Damper holder
4 Fulcrum plate
(right) assembly
1 Two screws
(B2.6 × 8)
3 Screw
(B2.6 × 8)
8 IO-64 board
4 Flexible board
(CN451)
2 Four screws
(B2.6 × 8)
1 Nine screws
(B2.6 × 8)
3 FR-137 board
5 Connector
(CN307)
6 DM-77 board
7 Screw
(B2.6 × 8)
1 Flexible board
5 Screw
(BVTP3 × 12)
4 Screw
(B3)
6 Two screws
(BVTP3 × 12)
7 Mechanism deck
3 Connector
(FE head)
2 Connector
(ACE head)
Note: When mounting the mechanism deck,
first align ¢ mark on the rotary switch.
2-3
2-9. POWER BLOCK REMOVAL
2-10. PS-414, MA-325 BOARD REMOVAL
1 Power cord
3 Power block
2 Two screws
(B3)
6 MA-325 board
3 PS-414 board
2 Three screws
(B3)
4 Screw
(B3)
1 Connector
(CN162)
5 Three screws
(B3)
2-4
2-11. INTERNAL VIEWS
Drum assembly (M901) (DZH-94A/ZRP)
8-839-044-02
Q100
Tape end sensor
8-729-043-84
D102
Tape top/end LED
8-719-048-26
M903
Cam motor assembly
X-3947-577-1
Q101
Tape top sensor
8-729-043-84
FE head
1-500-144-11
Drum assembly (M901) (DZH-94A/ZRP)
8-839-044-02
M902
Capstan motor
1-698-971-11
2-52-5 E
2-12. CIRCUIT BOARDS LOCATION
MA-325
(
VIDEO, AUDIO, I/O,
SERVO/SYSTEM CONTROL, TUNER
)
DM-77
(MODE CONTROL)
PS414
(POWER SUPPLY)
SW-307 (ED9)
(POWER SWITCH)
NK-11
(KOREAN STEREO)
RJ-79
(ADDITIONAL REAR OUT)
FR-137
(
FL DRIVE,
)
MODE CONTROL
POWER BLOCK
(SR-718)
(SWITCHING REGULATOR)
IO-64
(FRONT IN)
SLV-ED8/ED9
3-1 3-2
SECTION 3

BLOCK DIAGRAMS

3-1. OVERALL BLOCK DIAGRAM
IIC CLK, IIC DATA
COMP SYNC
RF ENV, RF SWP
SCK, SO
AF SWP
A MUTE
CNJ480
L2 IN V
L2 IN L
L2 IN R
VIDEO
AUDIO L
AUDIO R
IO-64 BOARD
(SEE PAGE 4-32)
RJ-79 BOARD
(SEE PAGE 4-25)
LINE 2 IN
CNJ901
L1 IN V
L1 IN L
L1 IN R
L1 IN L
NA HEAD PB
BIAS VCC
NORMAL AU
NA HF OUT
A MUTE
NA REC
L1 IN R
VIDEO
AUDIO L
AUDIO R
LINE 1 IN
CNJ953
VIDEO
AUDIO L
AUDIO R
AUDIO L
AUDIO R
LINE-1 OUT
LINE-2 OUT
PS-414 BOARD
(SEE PAGE 4-39)
BUFFER
IC901
IC501
SWITCH
Q600
CNJ901
SWITCH
Q601
12V
REC
MTR12V
UN13V
UN30V
POWER CONT
SW12V
SW5V
D6V
–13V
–F
+F
GND
35V
AC
110~240V
6V
–13V
GND
13V
SWITCH
Q603
SWITCH
Q602
IC600
VIDEO
REC/PB
AMP
IC340
AUDIO
REC/PB
AMP
IC201
AUDIO
PROCESSOR
(MONO)
IC201
IC202
IC401
CCD
OSD
Y/C
PROCESSOR
VIDEO
HEAD
Hi-Fi
AUDIO HEAD
(1/2)
(2/2)
IC360
LINE OUT L, LINE OUT R
MOD A
TUNER L
TUNER R
AUDIO
PROCESSOR
(Hi-Fi)
IN
OUT
TUNER/MODURATOR
DRUM FG
DRUM PG
M901
DRUM MOTOR
MONO
AUDIO HEAD
AUDIO
ERASE HEAD
FULL
ERASE HEAD
SP CH1
SP CH2
EP CH1
EP CH2
CH1
CH2
COMP SYNC
RF ENV, RF SWP
REC RF, PB RF, CROT
SCK, SO
AF SWP
AFM REC, PB AFM
BIAS
OSC
BIAS
OSC
SWITCH
T081
T091
IC071
TU701
MOD V
LINE OUT L
LINE OUT R
MA-325 BOARD
(SEE PAGE 4-5~4-28)
IIC CLK, IIC DATA
QVD
TV VIDEO
VIDEO OUT
OSD V
CGV, HDET,
CG CS
SCK, SI
TV/VTR
VIDEO
MOD A
SIF
SDA0,SCL0
PLL DATA,
PLL CLK,
PL ENABLE,
AFT, SAP,
FMONO
MUTE
Q751-Q753
TA MUTE
KOREAN
STEREO
IC301
IC303
IC302
IC400
POWER
L OUT, R OUT
NK-11 BOARD
(SEE PAGE 4-29)
TIMER/TUNER/
MODE
CONTROL
SW-307 BOARD
(SEE PAGE 4-35)
FR-137 BOARD
(SEE PAGE 4-35)
DM-77 BOARD
(SEE PAGE 4-32)
LED
DRIVER
FUNCTION
SWITCH
FUNCTION
SWITCH
EEP
ROM
RESET PULS
GENERATOR
FUNCTION
SWITCH
FUNCTION
SWITCH
CLIK
SHUTTLE
REMOTE
CONTROL
RECEIVER
OPERATING
SWITCH BLOCK
REMOTE
CONTROL
RECEIVER
FLUORESCENT
INDICATOR
TUBE
Q400
ED9
ED8
POWER
LED
DRIVER
Q300
JOG
LED
DRIVER
POWER CONT
A/D2
TA MUTE
HDET, CGV, CG CS
SCK, SI, SO
A/D6, 7
LED CS
A/D0, 1
DMS1, 2
SIRCS IN
SDA0, SCL0
PLL DATA, PLL CLK,
PLL ENABLE,AFT
BZ201
ASURA CS, ASURA RESET
POWER
FAIL
RESET
BUZZER
G1-G3
SEG1-6
ND320
D FG
D PG
DRM DA
D VS
M
IC101
IC161
(1/2)
CAP FG
M902
CAPSTAN MOTOR
CAP FG
CAP DA
CAP RVS, CAP TRQ PWM
M
CAM
M903
CAM MOTOR
CAP VS
M
MODE1-4
IC101
IC130
S100
(2/2)
CAM MOTOR
DRIVER
T/S LED
Q111
LED
DRIVER
ROTARY
SWITCH
D102
Q101
T SENS
Q101
S SENS
PH100
T REEL
SENS
T REEL FG
PH101
S REEL
SENS
S REEL FG
T SENS
S SENS
S101
REC PRE
REC PRE
CTL RESET
CTL HEAD
IC001, IC021
CTL AMP
Q001
CTL HYS HIGH
PB CTL, REC CTL
AF RECP, AF RFC, FULL ERASE
CAP STOP
SERVO/SYSTEM
CONTROL
WC
POWER
BLOCK
SR-718
AF RECP, AF RFC, FULL ERASE
FULL ERASE
AMP
AMP
GAIN
SWITCH
05
S701
RF UNIT
BUFFER
Q901
BUFFER
Q401
IC304
IC 1
QVD
VHF/UHF
3-4
3-2. VIDEO1 BLOCK DIAGRAM
SLV-ED8/ED9
3
REC
IDEL
ENV
DET
PB RF
BUFF
3
2
4
7
5
6
8
1
11
10
2
5
13
14
22
28
21
18
26
4
12
30
6
2
1
3
20
19
17
REC
ADJ
IC501
CN502
SP CH1 F
SP CH1 S
SP CH2 F
SP CH2 S
EP CH2 F
EP CH2 S
EP
CH1 S
EP
CH1 F
DET
HPF
MA-325 BOARD (1/5)
(SEE PAGE 4-5)
CN501
REC CURR
REC RF
REC SWP
CHECK
VIDEO
HEAD
SP
CH1
SP
CH2
EP
CH2
EP
CH1
SW2
SW1
SW9
SW5
REC
REC
VCA
PB
PB
PB
PB
VIDEO REC/PB AMP
SW6
SW10
SW4
SW8
SW3
SW7
Q501
C ROT
COMP SYNC
PB RF
REC RF
C ROT
COMP SYNC
PB ENV
SCK1 (SSB)
SO1 (SSB)
RF SWP
SCK1 (SSB)
SO1 (SSB)
RF SWP
SYSTEM
CONTROL
(SEE PAGE 3-8)
VIDEO 2
(SEE PAGE 3-5)
05
IC501 !¶ REC/PB
5.1Vp-p (2V)
2.5Vp-p (H)
IC501 !• REC/PB
IC501 REC/PB
4.6Vp-p (2V)
IC501@™ PB
88mVp-p (H)
IC501 @• REC
640mVp-p (H)
IC5014 REC
3.4Vp-p (H)
SLV-ED8/ED9
3-5 3-6
3-3. VIDEO2 BLOCK DIAGRAM
IC401 7 REC/PB
IC401 2 REC/PB
5.2 Vp-p (2V)
1.6Vp-p (14.32 MHz)
1.9 Vp-p (H)
IC401 REC/PB
3.6 Vp-p (13.89 MHz)
IC401 @•REC/PB
2.0Vp-p ( H)
IC401 ,!• REC/PB
4.4Vp-p (H)
IC201 REC/PB
IC201 %∞ REC/PB
552mVp-p (3.58MHz)
IC202 REC/PB
REC:360mVp-p (H)
PB:270mVp-p(H)
IC202 7 REC/PB
400mVp-p(H)
IC201 $• REC/PB
REC:320mVp-p(H)
PB:270mVp-p(H)
REC:440mVp-p(H)
PB:400mVp-p(H)
IC201 $™ REC/PB
1Vp-p(H)
IC201 @• REC
576mVp-p(H)
IC201 !∞ PB
310mVp-p(H)
IC201 !• REC/PB
340mVp-p(H)
IC201 REC
MA-325 BOARD (2/5)
(SEE PAGE 4-11,4-23,4-25)
5 7 4042
348
CLK
10
1H
DL
YNRLPF
DL EQBPF1
SUB
LPF
DEM
DOUB
LIM
FM
AGC
1/2
BUFFER
SUB
CONV
SUB
BPF
KIL
C LPF
SEQ
PB EQ
ACC
DET
1H/2H
DL
BUFFER
13 52
BUFFER
BUFFER
150
25
26
45
37
33
38
18
16
10
9
29
7
8
19
20
63
64
46
55
56
DE
EMH
CLP
DE
EMPH
CLP
LPF
KIL
B.D.
NAP
BPF
REC
BGA
PB
BGA-B
NL
DE-EM
DHP
NC
PIC
CTL
C
NC
SYNC
SEP
QV/QH
INS
VIDEO
AMP
BUFFER
CLP
SYNC
SEP
FBC
34 35
VIDEO
AGC
Y/C
MIX
FM
MOD
REC
EQ
BUFFER
IC202
CCD DELAY
IC401
OSD
17
1416
15
20
18
66
28
30
32
ACC
AMP
BPF2
MAIN
CONV
+
Q203
S
N
Q208
Q204
Q201
X202
3.58MHz
COMB
CTH
R
P
S
N
R
P
R
P
PB RF
REC RF
C ROT
COMP SYNC
VIDEO 1
(SEE PAGE 3-4)
Q202
C ROT
IC201 (1/2)
Y/C PROCESS
P
R
P
R
Q206
P
R
R
P
2
3
X401
14.31818MHz
15
28 27
Q403, 404
BUFFER
Q401
BUFFER
Q901
Q402
SW5V
CT401
VCO ADJ
VCO
OUT
VCO
IN
CV IN
S IN
S CLK
CV OUT
SYNC DET
V SYNC OUT
CS
XTAL OUT1
XTAL IN1
CV CR
SYNC IN
RESET
VCLK (IIC)
VSDATA (IIC)
VCLK (IIC)
VSDATA (IIC)
COMP SYNC
QVD
SI
S CLK
MOD V
SYSTEM
CONTROL
(SEE PAGE 3-8)
TUNER
(SEE PAGE 3-11)
MODE
CONTROL
(SEE PAGE 3-14)
5 5
CN480
CN423
L2 VIDEO
10
15
26
CN105
H DET
CG V
OSD CS
VIDEO
LINE-1
OUT
CNJ901
VIDEO
LINE-2
IN
CNJ480
VIDEO
LINE-1
IN
CNJ901
IO-64 BOARD (1/2)
(SEE PAGE 4-32)
TU VIDEO
TUNER
(SEE PAGE 3-11)
P
R
05
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