Pd Diagnosis Of Failure Analysis - Pioneer PDP-5020FD Service Manual

1
A
[2] PD (POWER-DOWN) DIAGNOSIS OF FAILURE ANALYSIS
Red LED Factory
Flashing History
Count Display
2 P-PWR
B
3
SCAN
4 SCN5V
C
6 Y-DCDC
D
7 Y-SUS
8 ADRS
E
10 X-DCDC
11 X-SUS
12
D-DCDC
F
15 UNKNOW
74
1
2
Defective
Assy
Each PD in the POWER SUPPLY Unit
POWER SUPPLY
Connector disconnection
Unit
X DRIVE Assy VSUS under voltage protection
Y DRIVE Assy VSUS under voltage protection
Connector disconnection
ADDRESS Assy
DIGITAL Assy Connector disconnection
SCAN Assy
X DRIVE Assy
VH over or under voltage protection
Y DRIVE Assy
Connector disconnection
DIGITAL Assy Connector disconnection
SCAN Assy
Connector disconnection
IC5V over or under voltage protection
Y DRIVE Assy
VNOFS under voltage protection
VYPRST under voltage protection
15VDD under voltage protection
Y DRIVE Assy
VKOFS1,2 under voltage protection
VKOFS3 under voltage protection
VKOFS4 under voltage protection
Over or under voltage protection of the
Y DRIVE Assy
center electric potential
DIGITAL Assy SQ_LSI does not operate
VADR under voltage protection
ADDRESS Assy
Connector disconnection
DIGITAL Assy Connector disconnection
Y DRIVE Assy Connector disconnection
X DRIVE Assy
Connector disconnection
POWER SUPPLY
Connector disconnection
Unit
Connector disconnection
15VDD under voltage protection
X DRIVE Assy
VXKOFS1 under voltage protection
VXKOFS2 under voltage protection
Over or under voltage protection of the
X DRIVE Assy
center electric potential
3.3V,2.5V,1.1V
DIGITAL Assy Over voltage/under voltage/overcurrent
protection
POWER SUPPLY
Connector disconnection
Unit
Connector disconnection
DIGITAL Assy
ModuleUcom can not detection
PDP-5020FD
2
3
PD Outline
Connector [P14][P15] (60"only)
X SUS block
Y SUS block
Connector [AD1]
Connector [D13] to [D20]
SCAN IC
X SUS block
Y SUS block
VH DC/DC
OFFSET block
Connector [Y1][Y2]
Connector [D21]
Connector [SA1][SB1][SB2][SC1][SC2]
[SD1]
SCAN IC
IC5V DC/DC
Y MSK block
NOFS block
VNOFS DC/DC
VPRST regulaotr
PR-U block
15V DC/DC
SOFT-G block
Y MSK block
KNOFS2 block
VYKOFS1, 2 regulaotr
Y MSK block
VYKOFS3 regulaotr
Y MSK block
KNOFS4 block
VYKOFS4 regulaotr
Y resonance block
SEQ_LSI (Sync input, output waveform)
Address resonance block
TCP
Connector [AD1][AD2]
Connector [D13] to [D20]
Connector [Y2][Y5][Y6]
Connector [X2][X3][X4]
Connector [P1][P2]
Connector [X2]
X SUS block
15V DC/DC
VXKOFS1 regulaotr
X OFFSET block
VXKOFS2 regulaotr
X OFFSET block
X resonance block
DC/DC controlo IC
DC/DC block
Connector [P4]
Connector [D23]
Each PD line of ModuleUcom
3
4
Checkpoint
4