Ricoh HL-F1, Field Service Manual

Page: 250 / 296

F-4 No bell ring.
Possible cause and Remedy
1. Ring delay
• 1 Ring delay is set to "0".
Yes: Set the ring delay to other than "0".
2. Ring volume
• 2 Ring volume is set to "OFF".
Yes: Set the ring volume to other than "OFF".
3. Connection between main PCB and scanner unit
• Main PCB and scanner unit are properly connected.
No: Fix the connection properly.
4. Harness between main PCB and scanner unit
• Harness is damaged.
Yes: Replace the harness with a normal part.
5. Connection between main PCB and NCU PCB
• Main PCB and NCU PCB are properly connected.
No: Fix the connection properly.
6. Harness between main PCB and NCU PCB
• Harness is damaged.
Yes: Replace the harness with a normal part.
7. Speaker
• Replacement of speaker solves the problem.
Yes: Replace the speaker with a normal part.
8. NCU PCB
• Replacement of NCU PCB solves the problem.
Yes: Replace the NCU PCB with a normal part.
9. Main PCB
• Replacement of main PCB solves the problem.
Yes: Replace the main PCB with a normal part.
F-5 Speaker is silent during on-hook dialing.
Possible cause and Remedy
1. Connection between main PCB and speaker
6. Troubleshooting
248
6