JVC UX-P55 Service Manual

(No.22036)1-37
4.12 LB1641 (IC801) : DC motor driver
•Pin layout •Truth table
4.13 NJU6433FG1 (IC934) : LCD driver
• Pin layoout • Pin function
• Block diagram
1 2 3 4 5 6 7 8 9
10
GND OUT1 P1
VZ IN1 IN2
VCC1
VCC2 P2
OUT2
Input Output Mode
IN1 IN2 OUT1 OUT2
0000 Brake
1 0 1 0 CLOCKWISE
0 1 0 1 COUNTER-CLOCKWISE
1100 Brake
49
64
1
16
17
32
3348
Pin
No.
Symol Function
1~50 SEG1~SEG50 Segment output terminal for LCD.
51,52 OSC1,OSC2 CR oscillating terminal.
53 VDD Power supply terminal for inside.
54 Vss GND level.
55 VLCD Power supply terminal for LCD drive.
56 CE Chip enable.
57 SCL Serial data transmission clock terminal.
58 DATA Serial data input terminal.
59 MODE Mode-setting-signal input terminal.
60 INH Display-off control signal input terminal.
61~44 COM4~COM1 Common output terminal for LCD.
COMMON
DRIVER
OSC
INPUT
SELECTING
CIRCUIT
DIVIDING
CIRCUIT
DECORDER
SHIFT RESISTOR
CONTROL CIRCUIT
MSB LSB
SHIFT REGISTOR 4
50bit
MSB LSB
SHIFT REGISTOR 3
50bit
MSB LSB
SHIFT REGISTOR 2
50bit
MSB LSB
SHIFT REGISTOR 1
50bit
LATCH CIRCUIT/SEGMENT DRIVER
INPUT CHANGING CIRCUIT
VDD
Vss
VLCD
INH
OSC1
OSC2
CE
DATA
MODE
SCL
COM1 COM4 SEG50 SEG1

JVC UX-P55 Specifications

General

Brand	JVC
Model	UX-P55
Category	Stereo System
Language	English