PDP-425CMX
124
1
2
3
4
1
2
3
4
C
D
F
A
B
E
• Diagnosis of the Power-down
Frequency
of Flashing
of Red LED
PD
Operation
Defective Board
Assy
Reason for
Power-down
Point to be Checked
Possible Defective
Parts
Remarks
2
POWER
POWER SUPPLY
3
SCAN
SCAN A, B
VH UVP
SCAN IC
SCAN IC
Short-circuiting between VH and GNDH
Y DRIVE
Y SUS BLOCK
IC2252, IC2253
Short-circuiting between VSUS and
SUSOUT or SUSOUT and SUSGND
VH DC/DC
IC2502, L2501
Detection of connector
disconnection
Detection of connector
disconnection
Detection of connector
disconnection
Detection of connector
disconnection
Detection of connector
disconnection
CN2001, CN2350
X DRIVE
VH UVP
IC1202
C1202
Short-circuiting between VSUS and
SUSOUT or SUSOUT and SUSGND
4
SCN-5V
SCAN A, B
CN2401, CN2402
IC5V UVP
SCAN IC
SCAN IC
Y DRIVE
IC5V DC/DC
Q2605, R2647
Y SUS BLOCK
R2352
6
Y-DCDC
Y DRIVE
VOFS UVP
VOFS DC/DC
Q2606, R2619, R2620
Y SUS BLOCK
IC2252, IC2253, Q2280,
Q2281
Short-circuiting between MSKS
and SUSOUT
Vprst UVP
Vprst Regulator
Q2531, Q2532, IC2535
7
Y-SUS
Y DRIVE
Detection of midpoint
voltage PD
Y RESONANCE BLOCK
IC2101
Y SUS BLOCK
Q2221
8
ADRS
ADDRESS
Address PD
ADDRESS RESONANCE
BLOCK
D1634
Short-circuiting between V+ADR
and GND_ADR
CN1501, CN3501-CN3504
9
XDRIVE
X DRIVE
CN1001
10
X-DCDC
X DRIVE
CN1201
VRN UVP
VRN DC/DC
Q1323, R1332, R1333
X SUS BLOCK
R1204, Q1272
11
X-SUS
X DRIVE
Detection of midpoint
voltage PD
X RESONANCE BLOCK
IC1101
*
When the Power-down is occured as the key-lock is effective.
• Please pull out the AC-plug, and make the state to stand-by mode.
• The lock is cancelled when the key-lock button is pressed for 5 seconds.
Summary of Contents for PDP-42MXE10
Page 9: ...PDP 425CMX 9 5 6 7 8 5 6 7 8 C D F A B E ...
Page 27: ...PDP 425CMX 27 5 6 7 8 5 6 7 8 C D F A B E ...
Page 37: ...PDP 425CMX 37 5 6 7 8 5 6 7 8 C D F A B E ...
Page 129: ...PDP 425CMX 129 5 6 7 8 5 6 7 8 C D F A B E ...
Page 132: ...PDP 425CMX 132 1 2 3 4 1 2 3 4 C D F A B E MAIN PWB CONNECTOR WAVE FORM POINT SIDE B ...