Instruction manual

Chapter 9 - Module Descriptions
Section 9-1 - Introduction
There are two items on the parts list for the panel. They are:
• SPB-80/4MB (PC Board)
• SPB-160MB (PC Board)
• SAPS (24VDC Power Supply Module)
Section 9-2 - Audio Booster PC Board
The Audio Booster PC Board provides all signal handling capabilities, amplification and
supervision.
SPB-160 SPB-80/4
Rated audio output at 1kHz: 2 – 80 Watt circuits 1 – 80 Watt circuit
UL Frequency response: 800Hz to 2.8kHz 800Hz to 2.8kHz
Rated STB Output: None 2 – 24VDC 2A circuits
The PC Boards are illustrated in Figure 9-1A (SPB-80/4) and 9-1B (SPB-160).
N
W5
W8
SW4
SW1
J2
R23
W1
D28
J1B
D33
D24
D22
W10
D27
D26
D32
D31
D37
D38
D62
D61
D77
D36
D35
D76
D34
W4
W6
D75
J3
D60
F2
F1
TB6
TB5
TB4
TB1
TB2
TB3
AUX
TRB
TROUBLE
AMP TRB
GF
EXP OPEN
EXP SHORT
AUD1 OPEN
AUD1
SHORT
STRB1
OPEN
STRB2
SHORT
STRB1 SHORT
STRB1 OUT
STRB2 OPEN
STRB2
OUT
EXP OUT
POWER
AC TRB
BAT TRB
LVL
L
AC
DC IN
DC OUT
BATTERY
STB2 OUT
STB1 OUT
EXP OUT
SPARE
C
NO
NC
T
R
B
STB RET
STB IN
AUX RET
AUX IN
AUD RET
AUD IN
TRANSFORMER
W7
25
70
25
70
25
70
D59
AC
AUD1 OUT
1
Figure 9-1A
SPB-80/4 PC Board
59