Pioneer MJ-L5 Service Manual page 55

Step No. Operation Keys and Operation Method
7 Press the REC key.
8 When J+ is larger than J-, press the REC key and
display the C1 error when the focus offset is
applied up to +0.4 µm.
(Do nothing when J- is larger than J+.)
9 Change the value with F.SKIP/R.SKIP until
the value becomes the same.
10 Press the PLAY key.
11 Power OFF
Connection diagram
7 Jitter/C1 Error Check at the time of Playback
Step No. Operation Keys and Operation Method
1 Short circuit MECH TEST MODE during the
power ON, or press the ESC key.
(Service remote control unit)(Fig.1)
2 Insert the test disc GGF1328 (MMD-212).
3 Perform " Normal Adjustment " (step 3, step 4).
4 Press the REC key.
5 Press the SET (for Remote control unit) key and
display the inner circumference address.
6 Press the PLAY key and display the C1 error for
the inner circumference.
7 Press the CANCEL (for Remote control unit) key. A0062 c0013
Jitter Meter
LEVEL JITTER
GND
FL Display
of-04 c0020 The C1 error with application of a focus offset of
about 0.4 µm on the – side is displayed.
The jitter value (J–) at this time is recorded.
of+04 c0032
of+04 c0032 When the smaller offset of the jitter value has
of+03 c0025 been corrected mistakenly, press the SET key
of+02 c0020 (Remote control unit) and return to step 4.
COMPLETE The mean value of the changed set value and
the offset of the other setting limit is written into
the EEPROM as the compensation offset.
Test mode is ended.
MD CORE MAIN UNIT
EFM MON
REFO
FL Display
EJECT Test mode
LOADING
GRT AJST
AUTO AJST
TEST PLAY TEST PLAY mode
ADRES 0050
a0050 c0015 Check that the jitter value meets the standard
value of the following table.
GGF1328 (MMD-212) jitter value
Inner circumference
Intermediate circumference 29 nsec or less
Outer circumference
Seven data are acquired, the largest and the
AVE. c0012 smallest value are discarded, and fixed display
is made for the mean value of the remaining
five data. Check that this value is 200 or less.
MJ-L5, SP-L5
6 Defocus adjustment
Status
SIDE A
Status
31 nsec or less
29 nsec or less
Remarks
Remarks
55