ZiLOG System 8000

HRM Zilog
HRM
5.8.4. Disk/Tape Module (Model 31) DC Voltage Test:
1. Remove the CPU Module from the top of the Disk/Tape
·Module.
2. DC output voltages are checked at the SMD input power
cable power connector P2 located on the rear of the SMD
(Figure 5-7).
3. SMD Voltage adjustments on the power supply (Figure 5-
8) are for +5VDC (+5VDC ADJ), -12VDC (-12VDC ADJ), and
+24VDC(+24VDC ADJ). (See Figure 5-8 for locations.)
14·PIN CONNECTOR
PIN
14 12
+24V
11 10
+24V
RTN
9 8
+5V
7 6
+5V
RTN
5 4 3 1
-12V -12V
RTN
PLUG
P2 ON SMD
POWER CABLE
FROM POWER SUPPLY
00397
Figure 5-7 Voltage Test Points, SMD Power Connector
NOTE
Ensure that the power connector (P2) is installed
with pin 1 oriented as shown in Figure 3-11 to
avoid damage t,o drive.
4. Cartridge Tape Drive voltage adjustments include one
additonal power supply output adjustment. Voltage
5-13
Zilog
5-13