Parts - Pioneer DEH-P550MP Service Manual

1

7.2 PARTS

7.2.1 IC
PD6294A
A
NJM2391DL1-33
PD5800A
MSM51V4265EP-70TS
BA25BC0WFP
- Pin Functions (PD6294A)
Pin No. Pin Name
1 VSS
B
2 X1
3 X0
4 NC
5,6 MOD1,0
7 DIMMER
8 KYDT
9 DPDT
10 REMIN
11 GRN
12 AMB
13–16 KD4–1
C 17-22 KST6–1
23 VDD
24-73 SEG49–0
74–77 COM3–0
78 VLCD
79,80 V2,1
*PD6294A
D
80
1
20
E
21
IC's marked by * are MOS type.
Be careful in handling them because they are very
liable to be damaged by electrostatic induction.
F
62
1
2
I/O Function and Operation
GND
Crystal oscillator connection pin
Crystal oscillator connection pin
Not used
I Connect to GND
O Dimmer select output
O Key data output
I Display data input
I Remote control pulse input
Dual Illumination (Green)
Dual Illumination (Amber)
I Key data input
O Key strobe output
VDD
O LCD segment output
O LCD common output
I LCD voltage input
Power supply terminal
61
60
41
40
DEH-P550MP/XN/UC
2
3
UPD63760GJ
UPD61002GC
PE5352B
NJM2391DL1-33
VREF
Thermal Over current
Shutdown protector
2
1
IN
GND
3
4
3
OUT
4