Table of Contents
Advertisement
• If there is VBATT voltage at the LEDs, measure the voltage at V613 pin 1 (fig
9.1, ~1.7V while LEDs are supposed to be lit).
* If the voltage is missing, check the soldering at D600 pin 92 (fig. 9.2).
* If it's correct, measure the resistance from D600 pin 92 to V613 pin 1 (1
kohms).
* If it's incorrect, replace R607 (class A, fig. 9.3). If that doesn't help
there's a foil damage and the phone is to be discarded.
* If it's correct, measure the resistance from V613 pin 1 to ground (1.5
kohms).
* If it's less, replace C656 (class A, fig. 9.3).
* If it's more, replace R608 (class A, fig. 9.3).
If the fault remains, replace D600 (class B, fig 9.2).
9.4 Top indicator doesn't blink green.
Open the phone and check for liquid damages. Make sure the double LED, H650
(class A, fig. 9.4), is correctly soldered.
If the solderings are correct, give the board power and start it up.
Measure the voltage at H650 pad 2 (~3.8V, fig. 9.4).
• If the voltage is correct, replace H650 (class A).
• If the voltage is missing, measure the resistance of R646 (470 ohms, class A, fig.
9.4).
* If it's correct, measure the resistance of C621 (>10 kohms, fig. 9.4).
* If it's less, replace these components in the mentioned order; C621,
C614 and then C432 (all of them class A and in fig. 9.4 or 9.5). Note!
Check the resistance if C621 after every component replaced.
* If it's correct, measure the voltage at N411 pin 5 (~3.8V, fig. 9.5).
* If the voltage is missing, replace N411 (class A).
4/00021-2/FEA 209 544/3.D
SH888, S868, Standare Electrical Repair
Fig. 9.4
40
(66)
Advertisement
Table of Contents
