Service manual

111
8258I N/B Maintenance
8258I N/B Maintenance
When the power button is pressed, nothing happens, no fan activity is heard and power indicator is not light up.
8.1 No Power-5
PL502
120Z/100M
S
D
2
3
1
6
7
8
5
G
PQ503
AO4419
ADPIN
CHARGING
PR28
20K
BATT
Charge
PR41
4.7K
PQ6
2N7002
PQ5
DDTA144WCA
PC5
0.01U
PR42
4.7K
PQ9
MMBT2222A
PD6
BAS32L
PR514
100K
PD503
B340A
PL501
33UH
PC506
10U
PC504
10U
PC16
0.1U
PR17
23.7K
PR15
13.7K
PR16
392K
PJS1
SHORT-SMT3
PR12
2.49K
PR10
124K
PR8
0
I_CTRL
P26
PU2
TL594C
P18
P18
PR14
10K
PC3
0.01U
PR502
0.02
C1E1
E2
C2
VCC
GND
RT
CT
DTC
FEEDBACK
1IN-
1IN+
2IN-
2IN+
REF
OUTPUTCTRL
1
2
3
4
5
6
7
8
16
15
14
13
12
11
10
9
PR25
0
PR24
7.5K
PC15
1000P
PR13
100K
PC7
1U
PR9
6.19K
PC2
0.1U
PC6
0.1U
GND GNDB
PF502
TR/3216FF-3A
PC509
10U
PD501
SSA34
PD3
RLZ20C
CHARGING
PQ3
2N7002
P18
BATTERY_TYPE
P18
PQ4
2N7002
PR18
0
GND GND
GND
GND
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