Nokia 8310 - Page 5

CONFIDENTIAL 5 (18)
Customer Care Europe & Africa NHM-7 Repairhints
SCCE Training Group Version 1.0 Approved
 2002 Nokia Mobile Phones
Date 28.02.2002
© NMP 2002
Checked by:
SCCE Training Group
Approved by:
SCCE
CHAPTER 1 PHONE DOES NOT SWITCH ON
Phone does not switch on
Try to make SW-update,
continue with section
"Flash update not possible" if
not ok
check if
current consumption
is around 15mA
(in Servicejig supplied with
4VDC)
check VBATT
4VDC at both sides of Z260-
Z265
Check X101, also check
resistance of Z260-Z265
(0 Ohm)
check 32.768kHz
at C209/210
change B200,
also check C209/210.
Probably D200 faulty
check that
PWRONX decreases to 0V if
powerswitch is pressed
check that
VIO, VCORE, VANA, VFLASH1
and VR3 rise to their intended
values
check 13MHz reference clock at
R420
Check PURX 1.8VDC at J402
check / change
S300, R301
check lines for shorts to ground
or interruption, change UPP if
necessary
Check / change
G660, N600
OK
OK
OK
OK
OK
nOK
nOK
nOK
nOK
nOK
Check if
current consumption
is higher than
1 Ampere
Usually N700 faulty
(remove L703 to ensure)
yes
yes
no
no
UEM D200 faulty in all
probability
Try to flash the phone.
If SW-update does not work,
continue with chapter
"Flash update not possible"
nOK