Pioneer MEP-7000 Service Manual

57
MEP-7000
5
6 7 8
5
6 7 8
A
B
C
D
E
F
No. Waveform Items for check Causes and measures
1-
2-
3-
4
Points to be checked
-
-
CABLES
SJACK ASSY/
SMAIN ASSY
24,25
*1
PRO DJ screen
If operation stops at the point at which the PRO DJ logo*1 is displayed in Normal Style mode, communication between the
control and drive units has not been established.
Upon startup, a signal is output from the North CPU (IC601) of the control unit to the FPGA (IC301) of the drive unit, then
returned from the FPGA to the North CPU to establish communication.
Has the updating of the firmware
for the drive unit failed?
Check the defective point with the
Status LEDs on the SMAIN Assy.
Check if the FFC cables that
connect the SMAIN and SJACK
Assys are securely connected
and if there is breakage in the
FFC cables.
Check the waveforms of the
signals shown below that are
output from the SJACK Assy to
the FPGA (IC301) on the SMAIN
Assy in order to confirm in which
point communication is
interrupted.
From the control unit to the
drive unit:
• BRDG_CLK
• BRDG_FS
• BRDG_CS#
• KEY_DATA
From the drive unit to the
control unit:
• DISP ASSY_DATA1
• DISP ASSY_DATA2
If updating failed, operation stops at the point
at which the PRO DJ logo is displayed after
startup, and the LED for the USB STOP key
flashes repeatedly.
See [4] in “8.3 UPDATING/RECOVERY OF
FIRMWARE.”
If any point is judged as NG,
see “[8] Auto Device Diagnosis/Status LEDs” in
this section.
If the Status LEDs flash continuously, go to [4].
If a connection is loose, firmly connect the
cable.
If there is breakage, replace the cable.
If a signal sent from the control unit to the drive
unit is not input to the JA13 jack on the SJACK
Assy either, the control unit may be defective.
Go to [6].
Check the input/output signals to/from the
buffer ICs (IC303 and IC306) on the SMAIN
Assy. If no signal is output even if there is an
input signal, the ICs may be defective or
improperly mounted. Resolder the ICs, and if it
does not resolve the problem, replace the ICs.
If no signal is input to the buffer ICs (IC303 and
IC306), connection between the SJACK and
SMAIN Assys is poor. Resolder the corre-
sponding ICs.
[2-1] After startup, operation stops at the point at which the PRO DJ logo is displayed.*1
[2] Problems upon startup (Normal Style)

Pioneer MEP-7000 Specifications

General

Frequency range	4 - 20000 Hz
Channels quantity	- channels
Digital sound processing	- bit
Total Harmonic Distortion (THD)	0.006 %
Dimensions (WxDxH)	483 x 325 x 91 mm
Power consumption (typical)	33 W

Weight and Dimensions

Weight	6100 g