Protection
circuit
OIVPC
REGULATOR
1
2
3
4
5
6
7
8
9
10
11
12
Vcc-C
COMP
VDD
CD 8V
Vcc
AJ
Vcc-B
ACC
AUDIO 9V
CTRL
ILM 10V
GND
BA4901A-V2 (IC911) : Regulator
1. Pin layout & Block diagram
2. Pin function
1
2
3
4
5
6
7
8
9
10
11
12
To be connected with the collector of PNP Tr.
To be connected with the base of PNP Tr.
Voltage supply for ACC block.
Control of the COMP output by inputting voltage.
This voltage supply is for microcomputer.
This voltage supply for audio.
This voltage supply for CD.
Output selector of CD, AUDIO, ILM and Vcc-B.
To be connected with the BACK UP of car.
Output voltage is adjustable.
ILM output voltage adjustable.
Ground.
Vcc-C
Vcc-B
COMP
ACC
VDD
AUDIO
CD
CTRL
Vcc
ILM
AJ
GND
Pin No.
Symbol
Function
Summary of Contents for KD-MX2900R
Page 64: ...Printed circuit boards Main board old type Forward side Main board old type Reverse side ...
Page 65: ...Main board new type Forward side Main board new type Reverse side ...
Page 66: ...MD CD Servo board Forward side Switch board Forward side ...
Page 67: ...MD CD Servo board Reverse side Switch board Reverse side ...