PDP-504CMX/1
54
1
2
3
4
1
2
3
4
C
D
F
A
B
E
3.1.12 AUDIO AMP and COMM SLOT ASSYS
BAL
→
UNBAL
IC5003 LA4625
POWER AMP
IC9451 SP3232ECY
232C DRIVER
IC5001
SI-8120S
IC9453
IC9455
IC9455
IC9453
IC9455
IC9452
IC9452
IC9452
IC9452
IC9455
IC9454
IC9454
IC9454
IC9454
L+
L-
DC
DETECT
DD
CONVERTER
R+
R-
L_OUT +
L_OUT -
R_OUT +
R_OUT -
TEMP3
RXD_PDP
TXD_CARD
TXD_PDP
RXD_CARD
FIRST RXD
CB_MUTE
SL LINK
SR IN
SR OUT
SR SW
INT_EXT
GET_UART
V+16.5
TEMP3
JA9453
RS232C
TXD
T1 IN
R2 OUT
T2 IN
R1 OUT
TXD2
RXD2
RXD
CN9451
COMBI-
NATION
IN
A_NG
AMUTE
STBY
V+12V
V+6.5V
V+3.3V
V+3.3V
V+3V_STBV
V+6.5V
V+12V_D
AP3
CN5003
AP1
CN5002
CN9454
AP2
CN5001
AUDIO AMP ASSY
COMM SLOT ASSY
REG.
V+12V
CN9452
COMBI-
NATION
OUT
• Block Diagram