Philips SPENDEX 40 Maintenance Manual page 41

NATO CONFIDENTIAL
SPENDEX 40 UA 8251/00 AND /Ol
LIMITED MAINTENANCE MANUAL
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6 . 3 . 3 S w i t c h t e s t
In the switch test substate it is possible to test the hook switch
the Ptt-switch and the SECURE push button.
■
■
Actions
LED
D i s p l a y
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 2.
"HI P0 SO"
Apparatus in
switch test
substate.
2. Go off hook.
"HO P0 SO"
3. Press Ptt-switch.
"HO PI SO"
4. Release Ptt-switch.
"HO P0 SO"
5. Go on hook.
"HI PO SO"
6. Press SECURE push button
"HI PO SI"
7. Release SECURE push
button.
"HI PO SO"
8. Press P key. "TESTMODE"
Apparatus back
to test wait
s t a t e .
Switch test - fault finding table
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F a i l u r e
Suspected module
- The display indication does not
change after going off/on hook.
• Cradle/upper cover
• Telephony board
- The display indication does not
always change after going off/on
hook.
• Cradle/upper cover
- The display indication does not
change after pressing/releasing
the Ptt-switch.
• Handset
• Front panel
• Connecting board
- The display indication does not
change after pressing/releasing
the SECURE push button.
• Front panel
• Connecting board
9922 154 13431
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NATO CONFIDENTIAL
6-9