20
DJS-1000
1
2
3
4
A
B
C
D
E
F
1
2
3
4
Interface Trouble
No
Failure in IC600 and peripheral circuit
No
Failure in the VBU
S
_DET2 peripheral circuit
Yes
Yes
PC connection is not available (U
S
B-B)
Is the voltage of IC2201
power supply normal?
*1
Is VBU
S
_DET2 set to the HI level?
[Observation point
]
No
Failure in IC2201 and peripheral circuit
Yes
Is the D+, D- line normal?
[Observation point
, waveform 17
]
No
Failure in the crystal (X2201) and peripheral circuit
No
Failure in the LAN_xR
S
T peripheral circuit
Is IC2202 16pin
(LAN_xR
S
T) set to the HI level?
[Observation point
]
No
Failure in the U
S
BHUB_xR
S
T peripheral circuit
Is IC2201 26pin
(U
S
BHUB_xR
S
T) set to the HI level?
[Observation point
]
Failure in common mode filter(L2205)
Failure in U
S
BB connector(JA2201)
Failure in IC2201 and peripheral circuit
Failure in IC2000 and peripheral circuit
Yes
Yes
Is the input clock to IC2201 normal?
[Observation point
, waveform 16
]
No
Failure in the crystal (X2202) and peripheral circuit
Is the input clock to IC2202 normal?
[Observation point
, waveform 1
8
]
No
Failure in IC600 and peripheral circuit
Failure in IC600 and peripheral circuit
No
Yes
Yes
Yes
Yes
LINK terminal does not work
Is the voltage of IC2202
power supply normal?
*1
Is the input clock to IC2200 normal?
[Observation point
`
, waveform 19
]
No
Yes
Is the voltage of IC2200
power supply normal?
*1
Failure of either IC2000, IC2200 or IC2202 and peripheral circuit
*1: Refer to 10.
3
2 VOLTAGE
S
/ WAVEFORM
S
(QRT101
8
S
ERVICE MANUAL)
*1: Refer to 10.
3
2 VOLTAGE
S
/ WAVEFORM
S
(QRT101
8
S
ERVICE MANUAL)
*1: Refer to 10.
3
2 VOLTAGE
S
/ WAVEFORM
S
(QRT101
8
S
ERVICE MANUAL)
Failure in the crystal (X2202) and peripheral circuit
