Omron 8025G Maintenance Manual page 162

MAINTENANCE AND REPAIR
SECTION 6
Processor Card. Plug the card onto the extender card and insert in the
terminal. Check for the following signals in the order given:
WAVEFORM 43: IC CLK
(
Oscilloscope Settings:
Vertical,
1
V/cm
Horizontal, 0.5 usec/cm
Synchronization. internal
IF SIGNAL IS INCORRECT OR ABSENT,
CHECK:
XC6-2, XC2, Timing Control Card
WAVEFORM 44:
CPU
Timing
Oscilloscope Settings:
Vertical, lV/em
Horizontal, 2 usec/cm
Synchroni~tion, internal
IF SIGNAL IS INCORRECT OR ABSENT,
CHECK:
XA4, XB2, circuitry related to
inputs to XA4
WAVEFORM 45: Each
MA bus
line
Oscilloscope Settings:
Vertical,
1
V/cm
Horizontal,
I
usec/cm
Synchronization. internal
IF SIGNAL IS INCORRECT OR ABSENT,
OIECK:
XF6-8; XE4-3,6,8,ll; XF4-3,6,8,llj
XE5-3,6; XFS-3,6,8,1Ij XD2j XD4i
XD3; XDSj input circuitry related
to
XD2.
XD4,
XDS
and
XDS
6-39