JVC HD-Z56RF7, Руководство по обслуживанию

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1-36 (No.YA460)
5.1.6 DETAILS
Self check is performed for the following items:
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Detection item Display Detection content
Diagnosis
signal (line)
Detection timing
Low bias line short
protection LOB Detection of the low bias line(5V/9V/12V) short.
Q9821 , Q9831 , Q9861 [POWER PWB ]
LB_PRO Detection starts 3 seconds after
the power is turned on. If error
continues between 1000ms the
power is turned off.
Fan lock FAN Not used ---- ----
Audio AUD Not used ---- ----
Devices on the ANALOG
PWB and the TUNER
PWB ANA Confirmation of reply of ACK signal which uses
I
2
C communication.
IC101 , IC102 , IC551 , IC601 , IC606 [ANALOG PWB]
IC3501 , TU3001 [TUNER PWB]
SDA Detection starts 3 seconds after
the power is turned on. If it checks
whenever I
2
C communication is
performed and no reply of ACK
signal an error will be counted.
Devices on the DIGITAL PWB DIG Not used ---- ----
Detection item Display Detection content
Diagnosis
signal (line)
Detection timing
Temp. sensor TMP Confirmation of the abnormal inner cabinet
temperature. (53
°
C)
IC2001 [THERMO PWB]
TXD It will count if the serial
communication from a DD
MICOM is always supervised and
an error occurs.
Lamp does not light up L1 Confirm that the lamp dose not light up.
CNBCT1 [DRIVE PWB]
TXD It will count if the serial
communication from a DD
MICOM is always supervised and
an error occurs.
Lamp goes out L2 Confirm that the lamp dose not goes out.
CNBCT1 [DRIVE PWB]
TXD It will count if the serial
communication from a DD
MICOM is always supervised and
an error occurs.
Abnormal DD CPU
circuit DDT Confirmation of the serial communication error
between DRIVE PWB and DIGITAL PWB.
IC3701 [DRIVE PWB]
TXD It will count if the serial
communication error is error
occurs.
Fan lock FAN Confirmation of the lock signals outputting the
operation(circuit) status of the cooling fan.
IC8005 [DRIVE PWB]
TXD It will count if the serial
communication from a DD
MICOM is always supervised and
an error occurs.
Lamp cover open LC Confirmation of the interlock switch status for the
lamp cover.
S0861 [LAMP COVER SW PWB]
TXD It will count if the serial
communication from a DD
MICOM is always supervised and
an error occurs.
Abnormal of optical iris IRS Confirmation of the abnormal optical iris
operation.
IC5005 [IRIS PWB]
TXD It will count if the serial
communication from a DD
MICOM is always supervised and
an error occurs.