KD-LX555R Datasheet PDF - JVC

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KD-LX555R
JVC

Part Number KD-LX555R
Description CD RECEIVER SERVICE MANUAL
Page 30 Pages


KD-LX555R datasheet pdf
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SERVICE MANUAL
CD RECEIVER
KD-LX555R429070933
S
S T DM
SOURCE
7 89
KD-LX555R
10 11 12
Area Suffix
E ------ Continental Europe
TABLE OF CONTENTS
1 Precautions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
2 Disassembly method . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
3 Adjustment. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
4 Description of major ICs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32
COPYRIGHT © 2003 VICTOR COMPANY OF JAPAN, LTD.
No.49793
2003/5



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SECTION 4
Description of major ICs
4.1 BA6956AN (IC830, IC831) : Reversible motor driver
• Block diagram
TSD
CONTROL LOGIC
123456789
• Pin function
Pin No. Symbol
1 VREF
2 OUT2
3 RNF
4 OUT1
5 VM
6 Vcc
7 FIN
8 GND
9 RIN
Function
Output high voltage level control terminal
Output terminal for motor
GND of driver division
Output terminal for motor
Power supply for driver division
Power supply for signal division
Input terminal for control logic
GND
Input terminal for control logic
• Truth table
FIN RIN
HL
LH
HH
LL
OUT1 OUT2
MODE
H L Forward rotation mode
L H Reverse rotation mode
L L Break Mode
OPEN OPEN Stand-by mode
1-32 (No.49793)



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4.2 BR24C01AFV-W-X (IC1502) : EEPROM
• Pin layout
Vcc WP SCL SDA
A0 A1 A2 GND
• Block diagram
A0 1
A1 2
1kbit EEPROM ARRAY
7bit
ADDRESS
DECODER
SLAVE/WORD
7bit ADDRESS REGISTER
8bit
DATA
REGISTER
A2 3
GND 4
START
STOP
CONTROL LOGIC
ACK
HIGH VOLTAGE GEN.
Vcc LEVEL DETECT
• Pin function
Pin name
Vcc
GND
A0,A1,A2
SCL
SDA
WP
I/O
-
-
IN
IN
IN / OUT
IN
Description
Power supply
Ground (0v)
Slave address set
Serial clock input
Slave and word addressserial data input serial data output *1
Write protect input
*1 An open drain output requires a pull-up resister.
8 Vcc
7 WP
6 SCL
5 SDA
(No.49793)1-33



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4.3 BR24C32F (IC703) : EEPROM
• Pin Layout
VCC WP SCL
SDA
BR24C32/F
A0 A1 A2 GND
• Pin function
• Pin layout & Block diagram
PIN NAME
VCC
GND
A0-A2
SCL
SDA
WP
I/O Function
- Power Supply
- Ground (0V)
I Slave Address Set
I Serial Clock Input
I/O Slave and Word Address.
Serial Data Input$ Serial Data Output *1
I Write Protect Input
A0 1
A1 2
32 Kbit EEPROM ARRAY
12bit
ADDRESS
DECODER
SLAVE WORD
12bit ADDRESS REGISTER
8bit
DATA
REGISTER
8 Vcc
7 WP
A2 3
START STOP
CONTROL LOGIC
ACK
GND 4 HIGH VOLTAGE GEN. VCC LEVEL DETECT
6 SCL
5 SDA
4.4 HD74HC126FP (IC771) : Changer Control
OE1 1
A1 2
Y1 3
OE2 4
A2 5
Y2 6
Vss 7
HD74HC126
14 Vcc
13 OE4
12 A4
11 Y4
10 OE3
9 A3
8 Y3
1-34 (No.49793)



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