D 8725 Traunreut ‘Tel. (08669) 31-O
SERVICE MANUAL 'IWC 151/155
Page 30
Se&ion 2.2.6
Kundendienst
Sequential (duration) test
Check that all test adapters are correctly connected, inclu-
ding the connection to the V-24 interface socket.
The sequential test for the TNC 151 is comprised of the
following individual tests:
a) Key I3
"TEST INT.PCT, BATTERY TRIGGER"
The internal potentiometers (on the front panel) are in
order when set to 100 + 2%.
b) Key m
"EiROrTEST CPU"
xxxx xxxx
The contents of the EPROMS addressed by the main processor
are tested through their CRC check-sums. The sums of the
individual address ranges are displayed in one data word.
The MS-byte contains the generated check-sum, the LS-byte
contains the expected check-sum. The address range dis-
played in a fail condition is the first that deviates from
the expected check-sum.
c) Key
El
"RAM TEST NOT NAPPED"
Addressed is the range from EOOOH to FFF9H, which is
battery backed-up during power interruption.
d) Key
"RAM iii, NAPPED"
Addressed is the range from FFFFFH and upwards depending
on RAMS equipped. During this test, no power interruption
should occur.
e) Key
El
"TEST PC RAN"
Range: EOOOH to FFFFH (through CRU addressing)
"TESTSTATIC RAM CLP PROCESSOR BOARD"
Range: DSOOH to DFFFH
The sequential test for the TNC 155 is comprised of the
following individual tests:
a) Key
El
"TEST INT.POT, BATTERY TRIGGER"
The internal potentiometers (on the front panel) are in
order when set to 100 + 2%.
b)Key
q
"EPROM TEST CPU"
xxxx xxxx
the contents of the EPROMS addressed by the main proces-
sor are tested through their CRC check-sums. The sums of
the individual address ranges are displayed in one data
word. The MS-byte contains the generated check-sum, the
LS-byte contains the expected check-sum. The address
range displ'ayed in a fail condition is the first that
deviates from the expected check-sum.
c) Key
El
'PAM TEST NOT NAPPED"
Addressed is the range from EOOOH to FFF9H, which is
battery backed-up during power interruption.
d) Key
El
"RAM TEST MAPPED"
Addressed is tha range from FFFFFH and upwards depen-
ding on RAMS equipped. During this test, no power
interruption should occur.
6) Key
El
"TEST PC RAM"
Range: EOOOH to FFFFH (through CRU addressing)
"TEST STATIC RAM CLP GRAPHICS BOARD'
Range: AOOOH to BFFFX
D800H to DFFFH
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