Nokia 3210 Repair Manual page 15

Customer Care Europe & Africa
Technical Services Training Group
DC/DC Converter V105 faulty
Check the difference between V101 cathode 3.2VDC / anode 2.6VDC.
Check at V105 – pin 4, 5, 12, and 13: switching frequency 600kHz.
Check 1.2VDC at V105, pin 15.
Check at V105, pin3: 0V. If not, check the respective voltage dividers R131, R132, R134, R143, R144.
If all ok – change V105.
FLASH D301 / SRAM D302 related faults
Check if the current consumption is approximately 20mA.
Try to flash the phone – if this does not work go to chapter "FLASH update not possible" on page#30.
Check also near the service contacts on the PCB - If any component is missing (like on picture below) – flashing will not work!
Torn off components are the result of sliding the phone on the service battery – the contacts can be damaged, too.
NOTE: Always handle the phone in combination with the service battery with care to prevent those failures!
© 2001 Nokia Mobile Phones
CONFIDENTIAL
NSE-8/9
Date: 05.09.2001
Checked by:
CC Training Group
15 (48)
Repairhints
Version 5.0 Approved
Approved by:
Technical Services