Power Down diagnosis ( defective points)
Number of
PD circuit in
Reason for PD
Blinking
operation
Defective PBC Assy
(Power-down)
Point to be Checked
Possible Defective Part
Remark
2 times
POWER
P SUPPLY Ass'y
SCAN Ass'y
SCAN IC
SCAN IC
VH-GNDH
Y SUS BLOCK
IC2252,IC2253
VSUS-SUSOUT, SUSOUT-
SUSGND
VH DC/DC
IC2502,L2501
Detection of cable detection
CN2001, CN2350
Detection of cable detection
CN2401, CN2402
SCAN IC
SCAN IC
Y DRIVE Ass'y
IC5V DC/DC
Q2605,R2647
VOFS DC/DC
Q2606,R2619,R2620
Y SUS BLOCK
IC2252,IC2253,Q2280,Q2281 MSKS-SUSOUT
Vprst UVP
Vprst Regulator
Q2531,Q2532,IC2535
Y RESONANCE BLOCK
IC2101
Y SUS BLOCK
Q2221
Address Power Down
ADDRESS RESONANCE BLOCKD1634
V+ADR-GND_ADR
Detection of cable detection
CN1501
9 times
X-DRIVE
X DRIVE Ass'y
CN1201
VRN DC/DC
Q1323,R1332,R1333
X SUS BLOCK
Q1272
OVP : OVER VOLTAGE PROTECT
UVP : UNDER VOLTAGE PROTECT
PD cuased by dtection of
Sustain middle-point voltage
X RESONANCE BLOCK
IC1101
11 times
X-SUS
X DRIVE Ass'y
X DRIVE Ass'y
3 times
10 times
X-DCDC
6 times
8 times
4 times
ADRS
ADDRESS Ass'y
SCN-5V
VRN UVP
VOFS UVP
IC5V UVP
VH UVP
7 times
Y-SUS
Y DRIVE Ass'y
PD cuased by dtection of
Sustain middle-point voltage
SCAN Ass'y
SCAN
Y-DCDC
Y DRIVE Ass'y
Y DRIVE Ass'y
32