BDP-95FD
24
1
2
4
1
2
3
4
C
D
F
A
B
E
5. DIAGNOSIS
5.1 POWER ON SEQUENCE
1
Pressing of the POWER key is detected
b
y the IC3601 Su
b
microcomputer on the MAI
N
Assy.
The IC3601 then outputs a POWER_O
N
signal to the SYPS Assy.
Power On Se
q
uence
2
After recei
v
ing the POWER_O
N
signal, the SYPS Assy acti
v
ates, secondary
Power, setting it to O
N
.
4
Communication
b
etween the SMP
8
634 and the DDR SDRAM starts.
Troubleshootin
g
v
oltages?
3
Is the 27 MHz CLK oscillating? (X1001)
5
Communication
b
etween the SMP
8
634 and the FLASH_IC starts.
It takes a
b
out 1 minute to complete the startup process.
3
The SMP
8
634 (IC1001), the core LSI, starts up.
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Q
Q
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