Pioneer TRAKTOR PRO CDJ-350, Руководство по обслуживанию

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27
CDJ-350
5 6 7 8
5 6 7 8
A
B
C
D
E
F
10.11
WA
V EFORMS
MAI N
1
,
4
[9] Confirmation of basic operations of the CPU/DSP
First, check if the voltage at each section is OK.
[9-1] Periphery of the MAIN CPU: IC103
1
MAI N Assy
IC103
Check the waveforms and levels of the
following signals:
• Reset: MAI
N _RST must be ”H.”
• Clock: Check the waveform of CLK66M.
• Status: Check the waveform of SH_STATUS.
If the SH_STATUS signal is fixed at “L” or ”H,” the
Main CPU is not operating.
If both the Reset and Clock signals are OK, IC103
(MAI
N CPU), IC101 (FLASH ROM) or IC102
(SDRAM) may be defective.
—
10.11
WA
V EFORMS
MAI N
3
,
6
[9-2] SERVO DSP: IC201
1
MAI N Assy
IC201
Check the waveforms and levels of the
following signals (in CD PLAY mode):
• Reset: SR
V RST must be ”H.”
• Clock: Check the waveform of CLK_S_16M.
• Servo clock: Check the waveform of
SR
V SCLK.
If both the Reset and Clock signals are OK, but the
SR
V SCLK signal is not output, the SER V O DSP
(IC201) may be defective.
—
10.11
WA
V EFORMS
MAI N
5
,
2
[9-3] AUDIO DSP: IC301
1
MAI N Assy
IC301
Check the waveforms and levels of the
following signals (in PLAY mode):
• Data request: DSPDREQ
• Reset: DSPRST must be ”H.”
• Clock: Check the waveform of CLK_A_16M.
If both the Reset and Clock signals are OK, but the
DSPDREQ signal is not output, the AUDIO DSP
(IC301) may be defective.
—
10.11
WA
V EFORMS
MAI N
8
[9-4] PANEL CPU: IC501
1
MAI N Assy
IC501
Check the waveforms and levels of the
following signals:
• Reset: RESET (IC501, Pin 12) must be ”H.”
• MAI
N communication clock: Check the
waveform of TSCK (IC501, Pin 37).
If the Reset signal is OK, but the TSCK signal is not
output, the PA
N EL CPU (IC501) may be defective.
—
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