Table of Contents
Advertisement
8-3-5 Failure of Hook-off
FAILURE OF HOOK-OFF
48V
TO TIP AND RING
OFF HOOK MODE
VOLTAGE AT
COLLECTOR OF
Trouble Shooting
BL5
IS FEED
DC
YES
IN THE
Q9>6
YES
OK
1. CHECK TEL-LINE CONNECTION
NO
2. CHECK ISOLATION BETWEEN
TIP AND RING
3. CHECK MODULAR JACK
1. CHECK Q1, Q14 AND Q7
NO
2. CHECK Q9, C64 AND ITS
CONCERNED COMPONENTS
8-18
Advertisement
Table of Contents
Troubleshooting
Need help?
Do you have a question about the SP-R5200 and is the answer not in the manual?
Questions and answers