HP
8
114A
Service Guide
Timing Board
This board consists mainly of data-controlled devices and
troubleshooting is reduced to replacing suspect devices. However,
basic checks can be performed on some parts of the circuitry:
Supply Voltages
Check whether the power supply voltages are present on the board.
Measure against AGND at the positive pole of capacitor
C109.
FLGND
+5
VFL
I--
___-
I WING
BOARD
EY”
‘>
Figure 5-6. Supply Voltages
Testpoints
on the Timing Board
5-l
2 Troubleshooting
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