Nokia 7110 - In-Call Features and Call Holding

CONFIDENTIAL 27 (30)
NSE-5
Service & Analysis Center Europe Repairhints Version 1.0 Approved
SACE AMS Training Group 30.07.2000
Repairhints_nse5_002508 Checked by:
AMS TRAINING GROUP
Approved by:
SACE
Rollerkey problems
Note : First of all check the mechanical funktionality.
Check the ESD & connector springs.
If scrollfunction failed, check R411 on PCB (broken or bend).
Cut the RTC battery holder or change the B-cover.
For more details see SB 012
Check connections between R409 and J400, R410 and J401, R412 and J402.
If one of these connections failed, swap PCB.
Check resistance of R407-R412.
If all resistors and connections are OK, probably MAD or PCB should be the reason.
C400 C401 C402
10nF
R407/150R
R408/150R
R411/150R
R409/470R
R410/470R
R412/470R
J400
J401
J402
Roller_A
Roller_B
Roller_C