Philips SPENDEX 40 Maintenance Manual page 42

NATO CONFIDENTIAL
SPENDEX 40 UA 8251/00 AND /Ol
LIMITED MAINTENANCE MANUAL
r
6 . 3 . 4
Memory test
In the memory test substate it is possible to test the data memory
black, the data memory red, the zeroise memory, the program memory 1
(main-EPROM) and program memory 2 (user-EPROM).
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Actions
LED
Display
Remarks
S t a r t c o n d i t i o n s :
- Apparatus on hook
"TESTMODE"
Apparatus in
test wait state.
1. Key in test code 3.
"MEM TEST"
Apparatus in
memory test
substate.
2. Press # key.
"MEM TEST"
Memory is tested.
"MEM OK "
Memory OK.
3. Press P key.
"TESTMODE"
Apparatus back
t o t e s t w a i t
s t a t e .
Memory test - fault finding table
D i s p l a y Meaning
Suspected module
"BLK RAM " Data memory black faulty
• Controller board
"RED RAM "
Data memory red faulty
• Controller board
"ZER RAM "
Zeroise memory faulty
• Key memory board
"M EPROM "
Program memory 1 faulty
• Controller board
"U EPROM "
Program memory 2 faulty
• Key memory board
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9922 154 13431
NATO CONFIDENTIAL
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