Download  Print this page

Power Down Diagnosis 20~21 - Pioneer PDP-V401 Field Service Manual

Hide thumbs

Advertisement

Diagnosis of Malfunctions when Power Down (PD) Occurs
TP NO.
ASSY Name
X DRIVE(A)ASSY
When K2609 is H
X DRIVE(B)ASSY
Y DRIVE(A)ASSY
When K3109 is H
Y DRIVE(B)ASSY
When the following
POWER SUPPLY
are L
MODULE
P12 Pin 5 (PD.XA)
Pin 7 (PD.XB)
P6 Pin 8 (PD.YA)
Pin 0 (PD YB)
Note) If PD occurs without +5V supplied to the PD terminal of the drive assembly, overload of the power supply or malfunction of the POWER
SUPPLY MOD. may be suspected. Turn OFF the large power ON/OFF switch SW1 of POWER SUPPLY MOD., and short-circuit Pins
1 to 3 of CN3305 of each assembly of Y DRIVE (A)/(B) so that only the small signal block can be checked.
+5V Generation Point
Operating PD
D2604 anode
VCP+12V over-current
D2703 anode
(+) reset circuit over-
current
D3104 anode
VCP+12V over-current
D3209 anode
(–) reset circuit over-
current
D3320 anode (YA)
VH150V over-current
D3310 anode (YB)
D3322 anode (YA)
VH150V over-current
D3324 anode (YB)
PD only at small signal
block
(Large Power line off)
Note)
PD at the large power
block
V
CSP
V
SUS
V
OFS
V
RN
20
PDP-501MX
Pulse module IC2610, IC2611 peripheral circuit
(+) reset circuit Q2702 peripheral circuit
Q2702G-S signal
X
signal terminal K2611 (5V amplitude)
PR-U
Pulse module IC3101, IC3106 peripheral circuit
Y
FET-Q3206-Q3209 peripheral circuit
SUS_MSK
C
FET-Q3005-Q3006 peripheral circuit
SP_MSK
Scan assembly internal bypass FET
Q7701, Q7702 peripheral circuit
Y
output FET Q3204 peripheral circuit
NR_D
Y
output FET Q3201 peripheral circuit
NR_U
Q3204 G-S control signal
Q3201 G-S control signal
Y
signal terminal K3117
NR_D
Y
signal terminal K3118
NR_U
D-D converter circuit mis-operations
When short-circuited between VH150V and
GND
Scan IC fault
D-D converter fault
When not short-circuited between VH150V and
GND
VH over-current mode (BYPASS FET is
always ON)
BYPASS output FET short-circuited
Digital section BYPASS control signal fault
Control signal stuck
VH over-current mode (Scan IC mis-
operations)
Scan IC fault
Scan IC control signal fault
V
175V line fault
SUS
When small signal block power overload
Fault of small signal block power supply of
assemblies
Fault of only the POWER SUPPLY MOD.
When not small signal block power overload
Fault of the POWER SUPPLY MOD. when PD
occurs in the POWER SUPPLY MOD. alone
Fault of assembly when PD does not occur in
the POWER SUPPLY MODULE alone
When large power block overload
Fault of power supply of each drive assemblies
Fault of the POWER SUPPLY MOD.
When not large power block overload
+40V
Fault of the POWER SUPPLY MOD. when PD
+175V
occurs in the POWER SUPPLU MOD. alone
+150V
Drive circuit mis-operations when PD occurs
–190V
due to drive assembly operations
Drive control signal fault
Pulse module IC input signal fault
Between SUS-B 4 and 6 of IC2610 (XA)
Between SUS-U 5 and 6 of IC2611 (XB)
Between SUS-D ! and @ of IC3101-1 (YA)
Between SUS-G * and ( of IC3106 (YA)
Fault between FET and G of each output
Faulty Point
83

Advertisement

Table of Contents

   Also See for Pioneer PDP-V401

   Related Manuals for Pioneer PDP-V401

This manual is also suitable for:

Pdp-v402Pdp-501mx

Comments to this Manuals

Symbols: 0
Latest comments: