Service manual

6.3.6 SPS Module Analysis
Item Checked components Instrument function Reference Value Failed condition
1 Q201 (S, D) Diode Voltage Droop 0.42V Short or open
2 R206, R206A
Ω
47 Open
3 R209
Ω
0.10 Open
4 R207
Ω
1K Open
5 U01 (3845) PIN 5-6
PIN 5-7
PIN 5-8
PIN 6-8
Ω
46.7K
38K
4.31K
50.9K
<10K
6.3.7 1A Charger Module Analysis
Item Checked components Instrument function Reference Value Failed condition
1 Q2 (S, D) Diode Voltage Droop 0.45V Short or open
2 R40
Ω
47.00 Open
3 R38
Ω
0.50 Open
4 U07 (3845) PIN 5-6
PIN 5-7
PIN 4-8
Ω
47K
20K
7.48K
Too low
5 D10.D11, D12, D13, D15 Diode Voltage Droop 0.45 Short or open
!
DO NOT let the charger work with full load when the outside cover is removed, without the
airflow path forming with cover, it can cause over-heated of TX1, and therefore the other
related components will fail again.
As usual, the most possible fail component is Q2, if this indeed happens; please replace
not only that component but also R40, R38, D15, R37and U1. Since failure of Q2 may
cause the other components listed above fail.
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