TROUBLESHOOTING HINTS
1. The bell does not ring.
NG
When the PAGE SW of the
base is pressed, does the
ringer on the handset ring?
OK
NG
When the TEL SG is joined
with the base to make bell
signal, is there pulse wave
at Pin 4 of IC4?
NG
OK
OK
Is there pulse wave at
pin 59 of IC5?
Check IC5 and its
peripheral circuit.
See 2. The bell does not
ring & page does not ring.
Check IC4 and TEL network
circuit.
Check R62, R65 and C41.
Deletion of the Caller ID memory
To delete the Caller ID memory in the EEPROM, proceed with the following process:
1) Set the TONE/PULSE switch to TONE position.
2) While pressing the PAGE button, plug the AC power adapter into the base. Keep pressing the PAGE button for more
than 2 seconds. CHARGE LED will blink rapidly.
Содержание FT-8808
Страница 1: ...SERVICE MANUAL PUBLISHED IN JAPAN Oct 1998 FILE NO 2B0 9810 FT 8808 CORDLESS TELEPHONE ...
Страница 10: ... 9 BLOCK DIAGRAMS Base Main ...
Страница 11: ... 10 Base RF ...
Страница 12: ... 11 Handset Main ...
Страница 13: ... 12 Handset RF ...
Страница 14: ...SCHEMATIC DIAGRAMS Base Main 13 14 ...
Страница 15: ...Base RF 15 16 ...
Страница 16: ...Handset Main 17 18 ...
Страница 17: ...Handset RF 19 20 ...
Страница 34: ... 37 ELECTRICAL PARTS LOCATION Base Main ...
Страница 35: ... 38 Base RF ...
Страница 36: ... 39 Handset Main ...
Страница 37: ... 40 Handset RF ...
Страница 38: ... 41 WIRING DIAGRAM Handset ...