23
DDJ-RZX
5
6
7
8
5
6
7
8
A
B
C
D
E
F
Lit or light off
(not flashing in red)
3.3 V
It is not
displayed.
It is displayed.
Confirm the power suplly that is not detected
by the voltage monitoring circuit.
Refer “10.62 VOLTAGES” and confirm if the
voltage value is within the normal range.
Confirm each power supply voltages.
Confirm the circuit or power supply IC where
the abnormal voltage is supplied.
Confirm the following items
“Confirmation of the power lines”
“Confirmation of PNL1 UCOM”
Confirm the communication line of PNL1 I0_**** of PNL1 UCOM when there is no problem in each items.
(Refer to ”
AM3352/PNL1/2 Communication
” )
(MAIN Assy : AM3352 (IC1701) STMO Assy : PNL1 UCOM (IC7001))
When there is no problem, replace PNL1 UCOM or MAIN Assy because the PNL1 UCOM or AM3352
is defective.
* When it is difficult to decide which PNL UCOM is defective or the commnunication CLK signals do
not operate, the AM332 is likely to be defective.
Mount R3527 (0 ) of the MAIN Assy.
(The voltage monitoring function is effective.)
Confirm that the unit functions normally.
Failure of LCD section
Refer to the following items
“Confirmation of the LCD backlight”
“Confirmation of the LCD module /
peripheral circuits”
Confirm the LED power supply of the control
button side.
Confirm the peripheral circuits of the IC and
connecting points of the power supply.
MAIN Assy : IC1151, IC1154, IC1155
Confirm the WAKE UP LED.
Confirm the voltage of F-DET terminal.
flashing in red
0 V
Remove the AC cord from the unit, and then
remove R3527 (0 ) in the MAIN Assy.
Connect the AC cord again, and turn ON the
power switch while monitoring each power supply.
[Note] Unplug the power cord in sconds as the
monitoring circuit is no effect state.
Confirming detection
of the power line
failure
Defect of the boot and
communication lines
Neither LCD nor LED of the control elements
side is displayed at startup.
It is unable to boot up.
The LCD is displayed but the LED of the
control element side is not lit at startup.
The LCD is not displayed but the LED of the
control element side is lit at startup.
It is unable to boot up.
Only the LCD is not displayed
at startup.
Ch 1: TP3515 (CN3501_ pin 17) (AM_PNL1_SPI1_XCS0)
Ch 2: TP3516 (CN3501_ pin 15) (AM_PNL1_SPI1_MOSI)
Ch 3: TP3517 (CN3501_ pin 13) (AM_PNL1_SPI1_SCLK)
Ch 4: TP3518 (CN3501_ pin 11) (AM_PNL1_SPI1_MISO)
V: 2 V/div. H: 200 us/div. V: 2 V/div. H: 2 us/div.
1-2
1-3
1-4
1-5
Ch 1
Ch 2
Ch 3
Ch 4
Ch 1
Ch 2
Ch 3
Ch 4
AM3352/PNL1/2 Communication