TABLE OF CONTENTS
Section Title Page Section Title Page
SERVICE NOTE...................................................................... 4
5. INTERFACE, IC PIN FUNCTION DESCRIPTION
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
5-1. 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
– 3 –
3-1. OVERALL BLOCK DIAGRAM
SLV-ED8/ED9
SECTION 3
BLOCK DIAGRAMS
SP CH1
SP CH2
EP CH1
EP CH2
CH1
CH2
MONO
AUDIO HEAD
AUDIO
ERASE HEAD
FULL
ERASE HEAD
VIDEO
HEAD
Hi-Fi
AUDIO HEAD
LINE 1 IN
VIDEO
AUDIO L
AUDIO R
LINE 2 IN
VIDEO
AUDIO L
AUDIO R
MA-325 BOARD
(SEE PAGE 4-5~4-28)
REC/PB
REC/PB
IC071
T081
BIAS
OSC
T091
BIAS
OSC
CNJ901
L1 IN V
L1 IN L
L1 IN R
IO-64 BOARD
(SEE PAGE 4-32)
CNJ480
L2 IN V
L2 IN L
L2 IN R
IC501
VIDEO
AMP
IC340
AUDIO
AMP
SWITCH
BUFFER
IC901
REC RF, PB RF, CROT
COMP SYNC
RF ENV, RF SWP
SCK, SO
AF RECP, AF RFC, FULL ERASE
AF SWP
AFM REC, PB AFM
IC201
NA HEAD PB
NA REC
BIAS VCC
L1 IN L
L1 IN R
AUDIO
PROCESSOR
(MONO)
(1/2)
NORMAL AU
NA HF OUT
A MUTE
FULL ERASE
IC201
Y/C
PROCESSOR
PROCESSOR
(2/2)
VIDEO OUT
TV VIDEO
QVD
IIC CLK, IIC DATA
IC360
AUDIO
(Hi-Fi)
IC401
OSD
IC202
CCD
LINE OUT L, LINE OUT R
MOD A
TUNER L
TUNER R
OSD V
CGV, HDET,
CG CS
SCK, SI
Q401
BUFFER
LINE OUT L
LINE OUT R
Q901
BUFFER
RJ-79 BOARD
(SEE PAGE 4-25)
Q751-Q753
CNJ901
CNJ953
MUTE
TA MUTE
LINE-1 OUT
VIDEO
AUDIO L
AUDIO R
LINE-2 OUT
AUDIO L
AUDIO R
TU701
VHF/UHF
IN
OUT
MOD V
TUNER/MODURATOR
VIDEO
L OUT, R OUT
NK-11 BOARD
(SEE PAGE 4-29)
S701
SIF
MOD A
AF RECP, AF RFC, FULL ERASE
IC 1
KOREAN
STEREO
RF UNIT
SDA0,SCL0
PLL DATA,
PLL CLK,
PL ENABLE,
AFT, SAP,
FMONO
IIC CLK, IIC DATA
COMP SYNC
RF ENV, RF SWP
QVD
SCK, SO
AF SWP
A MUTE
TV/VTR
IC161
SERVO/SYSTEM
CONTROL
D FG
D PG
DRM DA
CAP FG
CAP DA
CAP STOP
CAP RVS, CAP TRQ PWM
CAM
MODE1-4
T/S LED
T SENS
S SENS
IC101
AMP
IC101
AMP
IC130
CAM MOTOR
DRIVER
S100
ROTARY
SWITCH
Q111
LED
DRIVER
(2/2)
Q101
T SENS
Q101
S SENS
(1/2)
D VS
CAP VS
D102
M901
DRUM MOTOR
DRUM FG
DRUM PG
M
M902
CAPSTAN MOTOR
CAP FG
M
M903
CAM MOTOR
M
AC
110~240V
POWER
BLOCK
SR-718
35V
13V
6V
–13V
GND
PS-414 BOARD
(SEE PAGE 4-39)
Q600
SWITCH
Q601
SWITCH
IC600
12V
REC
Q603
SWITCH
Q602
SWITCH
UN30V
UN13V
MTR12V
POWER CONT
SW12V
SW5V
D6V
–13V
GND
FR-137 BOARD
(SEE PAGE 4-35)
ED9
FUNCTION
SWITCH
POWER
Q400
LED
DRIVER
IC400
REMOTE
CONTROL
RECEIVER
SW-307 BOARD
(SEE PAGE 4-35)
OPERATING
SWITCH BLOCK
JOG
LED
DRIVER
CLIK
SHUTTLE
–F
+F
FUNCTION
SWITCH
DM-77 BOARD
(SEE PAGE 4-32)
ED8
POWER
IC304
FUNCTION
SWITCH
Q300
LED
DRIVER
REMOTE
CONTROL
RECEIVER
FUNCTION
SWITCH
TA MUTE
HDET, CGV, CG CS
SCK, SI, SO
A/D2
POWER CONT
SIRCS IN
A/D6, 7
LED CS
A/D0, 1
DMS1, 2
IC301
TIMER/TUNER/
MODE
CONTROL
SDA0, SCL0
IC303
WC
EEP
ROM
PLL DATA, PLL CLK,
PLL ENABLE,AFT
ASURA CS, ASURA RESET
POWER
FAIL
RESET
BUZZER
G1-G3
SEG1-6
IC302
RESET PULS
GENERATOR
BZ201
ND320
FLUORESCENT
INDICATOR
TUBE
T REEL FG
S REEL FG
REC PRE
PB CTL, REC CTL
CTL RESET
CTL HYS HIGH
PH100
T REEL
SENS
PH101
S REEL
SENS
S101
REC PRE
IC001, IC021
CTL AMP
Q001
GAIN
SWITCH
CTL HEAD
05
3-1 3-2