Name: Nokia 7110
Brand: Nokia
Rating: 5 (1 reviews)

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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

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