10-10
Chart 8. 01/84 SLIC Initialization Failure
Fail 01/84
SLIC Init Failure
Verify standard
bias per table
Table 3 pertaining
to SLIC.
No
Isolate and
repair problem.
Yes
Standard
bias OK?.
Verify Host/SLIC connections:
Use ohmmeter to electrically
verify following signal
connections to source IC:
Signal @ U702 Source
OE* U701
WE* U701
HD0-HD7 U701
4XECLK U701
HA0-HA4,
HA14_IN, HA15_IN,
HA16,HA17 U701
CSIO1* U701
CSPROG* U701
Synopsis
This failure indicates a failure
in verification of the data in the
SLIC parallel programming
registers Some basic failure
modes:
1) Missing supply or ground to
SLIC.
2) Open in parallel address bus,
data bus or associated select
lines between the host C and
the SLIC.
3) 4xECLK missing to the SLIC.
4) SLIC is faulty.
Verify 4xECLK on SLIC;
nominal 1.8432MHz
square wave, 0-5V.
Connections
good?
Repair
connections.
MAEPF-26021-O
Yes
No
Signals
verfied?
No
Yes
Replace U702.
Replace U701.
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