1-55
Confidential
■
No ringing sound.
Step
Cause
Check
Result
Remedy
1
Ring delay
Ring delay is set to "0".
Yes
Change the ring delay
settings to another value.
2
Ring volume
Ring volume is set to
"OFF".
Yes
Change the ring volume
setting to another value.
3
Connection
between main
PCB and NCU
PCB
Are the main PCB and
NCU PCB connected
correctly?
No
Reconnect the connector.
4
Speaker
Is the problem solved
after replacing the
speaker?
Yes
Replace the Speaker.
5
NCU PCB
Is the problem solved
after replacing the NCU
PCB ASSY?
Yes
Replace the NCU PCB
ASSY.
6
Main PCB
Is the problem solved
after replacing the main
PCB ASSY?
Yes
Replace the main PCB
ASSY.
Summary of Contents for DCP-7030
Page 201: ...5 5 Confidential Print sample Fig 5 1 ...
Page 226: ...5 30 Confidential Location of fans Fig 5 13 Fan motor 60 unit Right side ...
Page 234: ...6 2 Confidential LVPS PCB Circuit Diagram 100V ...
Page 235: ...6 3 Confidential LVPS PCB Circuit Diagram 200V ...
Page 239: ...6 7 Confidential Wiring Diagram ...