Ericsson I 888 Trouble-Shooting Instruction page 41

32
33
D600
64
65
Check the solderings on J604 (class A, Fig 11.3) and the connection pins for dam-
ages. If the solderings and the pins are fine, replace H661 (class A, Fig 11.1). If that
didn´t make it, replace C683 (class A, Fig 11.1). If the fault remains, measure the
resistance of R670 (100 kOhm, class A, Fig 11.3), R653 (47 Ohm, class A, Fig
11.3), L601/R690* (approximately 0/33 Ohm, class A, Fig 11.3), C623 (>1 MOhm,
class A, Fig 11.3) and R658 (2.2 kOhm, class A, Fig 11.1). Measure the resistance
of C686 (>100 kOhm, Fig 11.1). If the resistance are lower than that, replace C686
and C684 (both are class A, Fig 11.1). If the resistance are correct, replace D600
(class B, Fig 11.3). If that didn´t make it, send the phone to the next repair level.
*The component is changed between the revisions R1C and R2A of the board, see
the sparepart list under product change.
4-00021-2/FEA 209 544/5.C
I888, Standard Electrical Repairs
R653
R670
1
128
J604
L601/R690
97
96
C623
Fig. 11.3
41
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