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FS-SD550R
JVC FS-SD550R User Manual
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FS-SD550R/FS-SD770R/FS-SD990R
1-20
UPD780024A
GKB19 (IC701) :
CPU
1.
Pin lay
out
2.
Block diagr
am
1
16
48
33
64 ~ 49
17 ~ 32
~
~
78K/0
CPU
CORE
ROM
(32K
BYTE)
RAM
(1024
BYTE)
16-bit TIMER/
EVENT COUNTER
8-bit TIMER/
EVENT COUNTER50
PORT0
PORT1
PORT2
PORT3
PORT4
PORT5
PORT6
PORT7
EXTERNAL
ACCESS
SYSTEM
CONTROL
8-bit TIMER/
EVENT COUNTER51
SERIAL
INTERF
ACE30
SERIAL
INTERF
ACE31
UA
RT0
INTERR
UPT
CONTROL
A/D CONVERTER
VDD0
VDD1
Vss0
Vss1
IC
BUZZER OUTPUT
CLOCK OUTPUT
CONTROL
W
A
TCHDOG TIMER
W
A
TCH TIMER
19
21
Table of Contents
Important for Laser Products
3
Preventing Static Electricity
4
Handling the Traverse Unit (Optical Pickup)
4
Dismantling and Assembling the Traverse Unit
5
Disassembly Method
6
Removing the Front Panel Assembly
7
Removing the Front Panel Board
11
Removing the Led Board
14
Maintenance of Laser Pickup
15
Replacement of Laser Pickup
15
Flow of Functional Operation until TOC Read
16
Method of Connecting Treatment Device Wire
17
Description of Major Ics
18
4
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JVC FS-SD550R Specifications
General
Brand
JVC
Model
FS-SD550R
Category
Stereo System
Language
English
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