Sony XBR-55X900H Service Manual page 26
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Also See for XBR-55X900H:
- Service manual (108 pages) ,
- Reference manual (47 pages) ,
- Reference manual (29 pages)
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2020/06/27 06:31:32 (GMT+09:00)
1.3 No Power DDCON/LDO
BM5S Board Model
Board Operation
BM5S
DC/DC
IC4800
BM5S
DC/DC
IC4801
BM5S
DC/DC
IC4802
BM5S
DC/DC
IC4803
BM5S
DC/DC
IC4809
BM5S
DC/DC
IC4810
SECTION 1
IC Ref
Voltage supply
1.8V_BE_DDC
1.1V_BE
0.9V_BE_DDC_1
0.9V_BE_DDC_2
0.8V_BE
0.7V_BE
SECTION 2
S E C T I O N 3
T R O U B L E S H O O T I N G
Checking item summary
Output ref.
Enable pin
C4805/JL4801 R4801(shorted)/CL4816
C4813/JL4803 R4809(shorted)/CL4817
C4820/JL4805 R4819(shorted)/CL4818
C4828/JL4807 R4827(shorted)/CL4819
C4860/JL4819 R4849(shorted)/CL4808
C4878/JL4821 R4865(shorted)/CL4811
SECTION 3
SECTION 4
Enable source
Fuse
P_ON_#2
F4800
P_ON_#2
F4801
P_ON_#1
F4802
P_ON_#1
F4803
P_ON_#1
F4804
P_ON_#1
F4805
P_ON_#1 : P-on u-com IC401 #pin12
P_ON_#2 : P-on u-com IC401 #pin13
SECTION 5
SECTION 6
Vcc ref.
C4803
C4812
C4819
C4827
C4845
C4863
26
SYS SET
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