Sony PFM-42B2, Руководство по обслуживанию

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2-28
PFM-42B2/42B2E
1. Apply AC 100 VAC-240 VAC to CN61 of switching regulator
Applied voltage Output voltage location ADJ Specification
2.
_ St-by 5 V (CN9002
1
-
2
) RV203 5.05
±
0.05 V
3.
3.3 V between PFC go PFC (C112) RV301 385
±
2 V
(CN7 pin-
!/
and GND)
4.
3.3 V between 26 V ON 26 V output voltage RV201 26
±
0.1 V
(CN9003 pin-
8
and GND) (CN9003 pin-
1
and GND)
5.
3.3 V between Vcego Vcc (5 V) output voltage RV270 5.18
±
0.02 V
(CN7 pin-
8
and GND) (CN23 pin-
3
and GND)
6.
3.3 V between Vcego A13.5 V output voltage RV202 13.8
±
0.02 V
(CN7 pin-
8
and GND) (CN9001 pin-
7
and GND)
7.
1.00 V between Vrs Vs output voltage RV802 Fully counterclockwise
(CN7 pin-
!]
and GND) (CN23 pin-
8
and GND) RV801 79.6
±
0.05 V
and 3.3 V between Vsago RV802 80
±
0.1 V
(CN7 pin-
6
and GND) Va output voltage RV803 Fully counterclockwise
(CN23 pin-
1
and GND) RV860 48.0
±
0.05 V
RV803 50
±
0.1 V
8.
Set the Va load to 1.0 A. Iak (CN7
!;
-GND) RV861 0.60
±
0.01 V
9. Change the Vrs and Vra in the range of .05 V to 2.0 V and check to see that the Vs and Va output
voltage remain in the variable range.
If not, repeat the adjustment from step 7.
Vs and Va output voltage variable range
Vrs, Vra Vs (V) Va (V)
0.5 V 75
±
1.9 % 40
±
3.0 %
1.0 V 80
±
1.9 % 50
±
3.0 %
2.0 V 90
±
1.9 % 70
±
3.0 %
APS-179 board
CN9004
RV270
1
1
1
1
1
1
1
1
1
1
1
1
1
1
RV202 PH107
RV102
RV150
Q504
C112
Q113
Q302
B side mount
C122
CN9001
CN9002
CN9003
CN23
CN6
CN7
RV203
RV201
PH101
PH111
RV101
Q108
Q704
RV950
Q504
PH902
RV901
RV861
RV860
RV801
RV803
RV802
CN61
A SIDE