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Chapter 2 Service
Troubleshooting the Counter
2-46 Assembly-Level Service Guide
2
Figure 2-9. A4 AC Power Suppy Testpoint Locations on A1 Motherboard
Assembly (Bottom View)
J18
-9V
9G
-12
GND
+12
GND
+5
Ref
In
!
AC LINE:
10 MHz Out
60 VA
100 - 120 VAC
200 - 240 VAC
50/60/400 Hz
50/60 Hz
OPTIONS
001 MS Oven
010 HS Oven
SERIAL PLATE
To Configure:
Hold Recall during turn-on.
Osc Adjust
RS - 232
ISM 1-A
92
FOR LABORATORY USE BY
QUALIFIED PERSONNEL
FOUR USAGE EN LABORATOIRE
PAR PERSONNEL QUALIFIE
HP-IB
Talk Only
2
A1
Motherboard
Assembly