20
DDJ-ERGO-V
1
2
3
4
A
B
C
D
E
F
1
2
3
4
8
Improper
adjustment or
assembly of the
JOG dial
The JOG dial turns too freely. (The load value for the JOG dial is outside the specified range.)
JOG section
Check that the load value for the JOG dial
is within the specified range, referring to
“Measuring method” in “
8
.4 JOG Dial
Rotation Load Adjustment.”
If it is outside the specified range, adjust the position
of the Adjust Plate to change the load value for the
JOG dial, referring to “Load adjustment method” in
“
8
.4 JOG Dial Rotation Load Adjustment.”
8
.4 JOG DIAL
ROTATIO
N
LOAD
ADJUSTME
N
T
During the above adjustment, if the upper-limit
adjustment position of the Adjust Plate is reached,
oil may have been spattered on the Adjust Plate.
Replace the washer, load gear, and cam plate with
new ones, then reassemble.
8
.4 JOG DIAL
ROTATIO
N
LOAD
ADJUSTME
N
T
9
Improper
adjustment of
the JOG dial or
defective washer,
gear, or cam plate
Resistance to turning the JOG dial is too strong. (The load value for the JOG dial is outside the specified range.
JOG section
Check that the load value for the JOG dial
is within the specified range, referring to
“Measuring method” in “
8
.4 JOG Dial
Rotation Load Adjustment.”
If it is outside the specified range, adjust the position
of the Adjust Plate to change the load value for the
JOG dial, referring to “Load adjustment method” in
“
8
.4 JOG Dial Rotation Load Adjustment.”
8
.4 JOG DIAL
ROTATIO
N
LOAD
ADJUSTME
N
T
During the above adjustment, if the lower-limit
adjustment position of the Adjust Plate is reached,
shavings from the worn-out washer may have
increased the friction. Replace the washer, load gear,
and cam plate with new ones, then reassemble.
8
.4 JOG DIAL
ROTATIO
N
LOAD
ADJUSTME
N
T
[3-4] Abnormalities regarding the JOG dial
1
Loose connection
Turning of the JOG dial is not detected.
CDJ1 Assy
CDJ2 Assy
JOG1/2 Assy
Check the JOG_DIAL1/2_0 and
JOG_DIAL1/2_1 waveforms while the Jog
dial is rotated.
If either waveform is abnormal, connection of
that signal line may be loose or the resistor or
the capacitor may be defective.
10.13
W
A
V
EFORMS
2
"#
4
Loose connection
Pressing on the JOG dial cannot be detected.
CDJ1 Assy
CDJ2 Assy
TCH1/2 Assy
Check the signal level of the JOG_TCH1/2
when the JOG dial is pressed.
If the signal level of the JOG_TCH1/2 does not
become L when the dial is pressed and H when
the dial is released (not pressed,) loose
connection of the signal line or a defective
resistor, capacitor, transistor may be suspected.
10.13
W
A
V
EFORMS
2
!
7
Defective gear,
Defective JOG
dial B
Noise is heard when the JOG dial is turned.
JOG section
There may be any scratches on the gear
or some foreign matter between the gears.
If there are any scratches, replace the scratched
gear with a new one.
If there is any foreign matter, remove it then
replace the gears with new ones.
Gears to be replaced: Load gear, Encoder gear,
JOG shaft
———
There may be any scratches or some
foreign matter on the JOG dial B or the
Roller B Assy.
If there are any scratches, replace the scratched
gear with a new one.
If any foreign matter is attached, remove it.
———
5
Defective TCH1/2
photo interrupter
TCH1/2 Assy
Check the signal level of the JOG_TCH1/2
when the JOG dial is pressed.
If the signal level of the JOG_TCH1/2 does not
become L when the dial is pressed and H when
the dial is released (not pressed,) a defective
photo interrupter (IC1
8
01, IC2
8
01) and
peripheral circuit may be suspected.
10.13
W
A
V
EFORMS
2
!
2
Defective JOG1/2
photo interrupter
JOG1/2 Assy
Check the JOG_DIAL1/2_0 and
JOG_DIAL1/2_1 waveforms while the Jog
dial is rotated.
If either waveform is abnormal, the photo
interrupters (PC1701, PC2701) may be defective.
10.13
W
A
V
EFORMS
2
"#
3
Defective MAI
N
UCOM (IC1002)
CDJ1 Assy
If the symptom persists after the above
corrections.
The MAI
N
UCOM (IC1002) may be defective.
[7] Basic Operation
Check of the MAI
N
UCOM
6
Defective MAI
N
UCOM (IC1002)
CDJ1 Assy
If the symptom persists after the above
corrections.
The MAI
N
UCOM (IC1002) may be defective.
[7] Basic Operation
Check of the MAI
N
UCOM
After the JOG Assy is disassembled then reassembled, be sure to check that the load value for the JOG dial is within the
specified range. Refer to the "
8
.4 JOG DIAL ROTATIO
N
LOAD ADJUSTME
N
T".
No.
Cause
Diagnostics Point
Item to be Checked
Corrective Action
Reference
