Pioneer CDJ-850, Руководство по обслуживанию

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[10] Basic operation
check of CPU/DSP
10.13 V OLTAGES
[9] Error Codes
How to respond when an error code is displayed on the FL DISPLAY is described below.
The MAI N CPU cannot write in a program to the AUDIO DSP at start-up.
[9-1] E-6002: COMMUNICATION ERROR
1 Power failure MAI N Assy
Check the power voltages for Audio DSP.
(
V +3R3_A, V +1R25)
If the voltage level is abnormal, IC402 or IC403
may be defective.
2 Defective part MAI N Assy
Check if the AUDIO DSP (IC301) is
operating.
If the AUDIO DSP (IC301) is not operating, AUDIO
DSP (IC301) and its peripheral parts may be defective.
If the AUDIO DSP (IC301) is operating, the MAI
N
CPU (IC103) and its peripheral parts may be defective.
[8] SER V ICE
MODE
[9-2] E-7201: TOC READ ERROR
TOC data cannot be read from a disc.
1
TM Assy-S
(Traverse mecha)
Measure the error rate in Player Operation
mode of Service mode in order to distinguish
whether the cause is attributable to the disc
or to the player. For measurement, play back
the reading point at which reading resulted in
an error, by listening to the sound.
See [8] SER V ICE MODE for details.
1 Defective pickup MAI N Assy
Check the LD current and measure the
resistance value of the actuator.
Refer to the “5.3 Diagnosis of the Pickup Assy.”
5.3 Diagnosis of
the Pickup Assy
2 Power failure MAI N Assy
Check the power voltages.
(
V +7R6_M, V +5R6_M, V REF1R65,
V +3R3_S)
For any power-supply section that does not output
the voltage, check the mounting statuses of the
regulator IC and its peripheral parts. If they are
properly mounted, then the parts may be defective.
4.3 POWER SUPPLY
BLOCK DIAGRAM
N o tracking close
3 —
TM Assy-S
(Traverse mecha)
Check that focusing is in. (If focusing is out,
tracking close is not possible.)
See “In-focus not possible” above. —
—
[1-3] “E-8709” is
displayed on the
DATA FL display
after startup
[9-3] E- 8 709: COMMUNICATION ERROR
Communication between the PA N EL CPU (IC1007) and MAI N CPU (IC103) is not possible.
1
DFLB Assy
MAI
N Assy
Check the waveforms of TSCK, TSI,
P
N L_BUSY, TSO, and MAI N _BUSY,
check the voltages of V +3R3 and V +1R2.
See “[1-3] “E-8709” is displayed on the DATA FL
display after startup“ for details.
—
No. Cause Diagnostics Point Item to be Checked Corrective Action Reference
No. Cause Diagnostics Point Item to be Checked Corrective Action Reference
No. Cause Diagnostics Point Item to be Checked Corrective Action Reference
No. Cause Diagnostics Point Item to be Checked Corrective Action Reference
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