Each Setting And Adjustment; Confirmation Mode And Adjustment Method For Load On The Jog Dial - Pioneer MEP-7000 Service Manual

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8. EACH SETTING AND ADJUSTMENT

8.1 CONFIRMATION MODE AND ADJUSTMENT METHOD FOR LOAD ON THE JOG DIAL

In this mode, the rotation load on the JOG dial (light or heavy) can be measured objectively.
Confirmation Mode for Load on the JOG Dial: ON
Fig. 1
[How to Measure]
After entering this mode, rotate the JOG dial clockwise rapidly and wait
until the dial stops by itself. If the maximum rotation speed exceeds
7.0-times speed, the result of measurement is displayed on the OEL
display. For example, if "0860:0115" is displayed, it signifies that the JOG
dial was rotated at 8.6-times speed at maximum (one rotation per second
is defined as normal speed) and that the time required for decelerating
from 3-times to 1.5-times speed was 115 ms.
Check that the deceleration time is within the specified range after the
JOG dial was rotated 5 times successively. If it is outside the specified
range, adjust the load on the dial, following the procedures in [How to
Adjust].
Specified range: 130 +50-30 msec
- Measurement of the deceleration time is invalid with 7-times speed or
lower.
- To minimize the variations in measurement of deceleration time, if
measurements are performed twice or more, the progressive average
(calculated by dividing the results of the all measurements by the number
of measurements) is displayed from the 2nd measurement or after.
[How to Adjust]
1. Enter this mode.
2. Set the adjustment value of the adjustor plate to "0."
3. Set the TEMPO adjustment slider to the far + (lowest) position.
4. Rotate the JOG dial clockwise rapidly and wait until the dial stops by
itself.
5. Measure the deceleration time, following the descriptions in [How to
Measure].
If the result is outside the specified range, adjustment of the adjustor plate
is required.
If the deceleration time is less than 90 ms: Set the adjustment value of
the adjustor plate to "-1."
If the deceleration time is more than 200 ms: Set the adjustment value
of the adjustor plate to "+1."
After the above adjustment, check if the adjusted value is within the range
shown below, following the description in [How to Measure]. If it is outside
the specified range, further setting of the adjustor plate is required.
Range of adjustment value: 130 ± 15 ms
-3
Adjust plate
-2 +2
(See "JOG Dial" of "7. DISASSEMBLY.")
+1
-1
0
How to Reset the Measured Value
To reset the progressive average value of measured deceleration
time, set the TEMPO adjustment slider to its center position.
5
6
1
While holding the LOAD A and LOAD B
keys pressed, Pressthe power key to turn
the unit on. Continue holding the LOAD A
and LOAD B keys pressed until the
indication shown in Fig. 1 appears.
LOAD A LOAD B
MEP-7000
6
7
The indication on the OEL display when Panel
Diagnosis mode is entered (See [1] of "6.3 SERVICE
MODE FOR THE CONTROL UNIT.")
Fig. 2
1
POWER ON
The indication on the LCD when Panel
Diagnosis mode is entered (See [1] of "6.3
SERVICE MODE FOR THE CONTROL
UNIT.")
Set the TEMPO adjustment slider to
the far + (lowest) position.
Confirmation Mode for
Load on the JOG Dial
OEL indication in Confirmation Mode for Load on the JOG Dial
Fig. 4
Maximum speed (**times speed)
Location of the adjustor plates
7
8
Fig. 3
Time required for decelerating from
3-times to 1.5-times speed (msec)
Adjust plate
8
A
B
C
D
E
F
115