Pioneer PDP-4280HD, Руководство по обслуживанию

Страница: 68 / 176

PDP-4280HD
68
1 2 3 4
1 2 3 4
C
D
F
A
B
E
5.4.2 SD (SHUTDOWN) DIAGNOSIS
Frequenc
y of
LED Flashing
Major T
ype
Detailed T
ype
Log Indication in F
actor
y Mode
Chec
kpoint
P
ossib
le Def
ective
Pa
rt
Remarks
MAIN
SUB
Blue 1
Abnor
mality in the
Sequence LSI
Comm
unication error
SQ-LSI
R
TR
Y
CLK_SQ/TXD_SQ, etc.
IC3401, IC3151
SQ_IC comm
unication not estab
lished.
IC3401 ma
y not ha
ve proper
ly star
ted up
.
Dr
iv
e stop
SQNO
Chec
k if the video sync signal is input to IC3401.
CN3001, IC3001,IC3401
A shutdo
wn occurs if IC3401 has not proper
ly star
ted up (a comm
unication f
ailure betw
een IC3401 and IC3306 [FLASH]).
Busy
B
USY
B
USY_SQ
IC3401, IC3151
If B
USY_SQ remains high, a shutdo
wn is gener
ated.
Incoherent v
ersion (hardw
are
, softw
are)
VER-HS
Chec
k the model n
umber of the DIGIT
AL Assy and the destination of the sequence LSI.
IC3306, IC3151
The wr
itten SQ_PR
OG is incoherent with data on the DIGIT
AL Assy
.
Incoherent v
ersion (memor
y,
softw
are)
VER-MS
Chec
k the model n
umber of the DIGIT
AL Assy and the
destination of the sequence LSI.
IC3306, IC3151
A shutdo
wn occurs if the SEQ-PR
OG that has been stored in bac
kup
memor
y does not coincide with the actual SEQ-PR
OG.
Blue 2
F
ailure in IIC
comm
unication with the
module microcomputer
DIGIT
AL Assy EEPR
OM
MD-IIC
EEPR
OM
IIC comm
unication line of IC3156
IC3156, IC3151
Chec
k the pull-up resistor of the IIC control line and the po
w
er to the corresponding IC
.
SENSOR Assy EEPR
OM
BA
CKUP
IIC comm
unication line of IC3652
IC3652, IC3151
Chec
k the pull-up resistor of the IIC control line and the po
w
er to the corresponding IC
.
DA
C
1
DA
C
1
IIC comm
unication line of IC3157
IC3157, IC3151
Chec
k the pull-up resistor of the IIC control line and the po
w
er to the corresponding IC
.
DA
C
2
DA
C
2
IIC comm
unication line of IC3158
IC3158, IC3151
Chec
k the pull-up resistor of the IIC control line and the po
w
er to the corresponding IC
.
Blue 3
Abnor
mality in RST2
po
w
er decrease
–
RST2
–
Is the output v
oltage of the DC-DC con
v
er
ter lo
w?
IC3602(BD9302FP)
If RST2 does not become high after the unit is tur
ned on, a shutdo
wn will be gener
ated in se
ver
al seconds
.
The 12
V po
w
er is not output.
PO
WER SUPPL
Y Unit,FU3601
Chec
k if
V + 12
V is star
ted.
Also chec
k if the FU3601 on the DIGIT
AL Assy has been melted.
Blue 4
Abnor
mality in panel
temper
ature
–
TMP-NG
TMP-H TMP-L
High temper
ature abnor
mality in the panel temper
ature sensor
If
TEMP1 that is read b
y the module microcomputer is 75
°
C or higher
, a shutdo
wn will be gener
ated.
Lo
w temper
ature abnor
mality in the panel temper
ature sensor
SENSOR Assy (IC3651) SENSOR Assy (IC3651)
A shutdo
wn occurs if the reading of
TEMP1 detected b
y the module microcomputer is
–20°C or less
. Also chec
k the connection with the SENSOR Assy
.
Blue 5
Shor
t-circuiting of the
speak
ers / D-AMP
temper
ature abnor
mality
–
A
UDIO
–
Speak
er ter
minals
CN9251
Chec
k if an
y speak
er cab
le is in contact with the chassis
.
A
UDIO_AMP
IC9201, IC9101
Chec
k if the AMP output is shor
t-circuited.
P
er
ipher
y of the cab
le betw
een IO3 and M8, and IO6 and P5
CN8803,CN4001,CN8806,P5
Chec
k if cab
les are fir
mly connected.
Blue 6
F
ailure in comm
unication with
the module microcomputer
–
MODULE
–
Comm
unication line betw
een MAIN and MOD
IC3151, IC8401
Chec
k the comm
unication lines (TXD_MOD/RXD_MOD/REQ_MOD).
P
er
ipher
y of the cab
le betw
een D11 and M1
CN3001, CN4101
Chec
k if cab
les are fir
mly connected.
Blue 7
F
ailure in main
microcomputer 3-wire ser
ial comm
unication
IF microcomputer
MA-3L
IF
Comm
unication line betw
een IF and MAIN
IC8301, IC8401
Chec
k the comm
unication lines (TXD_IF/RXD_IF/CLK_IF/B
USY_IF/CE_IF/REQ_IF).
MUL
TI processor
MUL
TI
Comm
unication line betw
een MUL
TI and MAIN
IC8001, IC8401
Chec
k the comm
unication lines (TXD_IC3/RXD_IC3).
Blue 8
F
ailure in IIC
comm
unication with the
main microcomputer
T
uner 1
MA-IIC
FE1
IIC comm
unication line betw
een
Tuner (ANT
-A) and MAIN
U6101,IC8401
Chec
k the comm
unication lines (SCL_TU/SD
A_TU or SCL_A
V5/SD
A_A
V5).
A
V s
witch
A
V
-SW
IIC comm
unication line betw
een A
V
-SW and MAIN
IC4601, IC8401
Chec
k the comm
unication lines (SCL_A
V5/SD
A_A
V5).
RGB s
witch
RGB-SW
IIC comm
unication line betw
een RGB-SW and MAIN
IC4701, IC8401
Chec
k the comm
unication lines (SCL_A
V5/SD
A_A
V5).
VDEC
VDEC
IIC comm
unication line betw
een M-VDEC and MAIN
IC4801, IC8401
Chec
k the comm
unication lines (SCL_MB/SD
A_MB).
VDEC SDRAM
SDRAM
IIC comm
unication line betw
een
VDEC and SDRAM
IC4801, IC4802
Chec
k the comm
unication lines (SDRAM).
Def
ectiv
e SDRAM
AD/PLL
ADC
IIC comm
unication line betw
een ADC and MAIN
IC5001, IC8401
Chec
k the comm
unication lines (SCL_A
V/SD
A_A
V).
HDMI
HDMI
IIC comm
unication line betw
een HDMI_RX and MAIN
IC5201, IC8401
Chec
k the comm
unication lines (SCL_MB/SD
A_MB).
T
uner 2
FE2
IIC comm
unication line betw
een
Tuner (ANT
-B) and MAIN
U6001, IC8401
Chec
k the comm
unication lines (SCL_A
V5/SD
A_A
V5).
US-MSP
US-MSP
IIC comm
unication line betw
een US_MSP and MAIN
IC6001, IC8401
Chec
k the comm
unication lines (SCL_A
V5/SD
A_A
V5).
Chec
k the comm
unication lines (TXD_IF/RXD_IF/CLK_IF/B
USY_IF/CE_IF/REQ_IF).
Blue 9
F
ailure in comm
unication
with the main microcomputer
MAIN
–
F
AN1
–
Comm
unication line betw
een IF and MAIN
IC8301, IC8401
Blue 10
F
AN NG
F
AN
Dir
t attached to the f
an motor
–
Chec
k the f
an.
P
er
ipher
y of the F
AN CONNECT
A
WW1290, A
WW1329
F
AN NG
Chec
k if cab
les are fir
mly connected.
Per
ipher
y of the cab
le betw
een F
A1 and M5, F
AN and M4, and F
A2 and F
A5
CN9551 to CN9555,CN4103,CN4113
P
er
ipher
y of the f
an control regulator
IC4310, IC4303
–
F
AN1
MSP/MAP
MSPMAP
IIC comm
unication line betw
een MSP/MAP and MAIN
IC9101, IC8401
Chec
k the comm
unication lines (SCL_A
V/SD
A_A
V).