Hookswitch Problems; Sometimes Not Possible To Release "Incoming Call; No Voice Dial Possible - Nokia 6310 Manual

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Hookswitch problems

Sometimes not possible to release "incoming call"

No voice dial possible

When the headset HDC-9P is connected to the bottom connector of NPE-4 and a call is coming in, it is often not possible
to release the call by pressing the hookswitch.
Often it is also not possible to initiate the voice call by pressing the hookswitch.
If one of the problems mentioned above occurs, changing the R175 can solve the problem.
Note: Do not check audio function of the phone with HDC-9P by using the JBV-1 docking station!
Only noise will be audible,I f testing in this way
Open the BB-shield and measure the resistor R175=100kΩ.
If R175=100kΩ, change the resistor to 15kΩ. (see pictue below).
Note! Up to HW-ID 06.01 there is a 100kΩ resistor. From HW-ID 06.02 the value has changed to 15kΩ.
For more information also see SB 024 (NPE-4).
© NMP 2003
CONFIDENTIAL
NPE-4 6310/NPL-1 6310i
Date 22.04.2003
100kohm
15kohm
Checked by:
SCCE Training Group
21 (29)
Repair Hints
Version 3.0 Approved
Approved by:
SCCE