Hybrid Mode, Key Check Mode - Sony MZ-R55 Service Manual

* For the mode numbers of 039 and 057, if the focus bias value is
NG, the following display is repeated:
CDmode NG
55 30
While P key is being depressed
CDmode NG
77 01
* For the mode numbers of 039 and 061, if the At error rate is NG,
the following display is repeated:
CDmode NG
39 03
7. If NG, set the servo mode. Perform automatic adjustment for
the items not accepted (see the servo mode).
8. Insert a MO disk.
9. Press ( key. The system discriminates between CD and MO
and performs automatic adjustment for the MO disk.
MO RUN
61
• MO Automatic Adjustment
Mode No. Adjustment Description
032 MO read FE balance adjustment
033 MO read ABCD level
034 MO write FE balance adjustment
035 MO write ABCD level
037 MO focus gain
038 MO tracking gain
061 32 cluster full recording
062 Recording shock
063 32 cluster full playback
039 MO focus bias
042 Low refrection CD FE balance adjustment
043 Low refrection CD ABCD level
044 Laser low reflection CD read
046 Low refrection CD tracking gain
Focus bias value
Mode No.
Error code (01 to 04)
Meaning of focus bias
At error value
Mode No. (lower two digits)
Mode No. (lower two digits)
10. If the result of automatic adjustment is OK, the following dis-
play appears:
MOmode
00
11. If the result of automatic adjustment is NG, the following dis-
play appears:
MOmode
82 00
12. If NG, set the servo mode. Perform automatic adjustment for
the items not accepted (see the servo mode).

4-6. HYBRID MODE, KEY CHECK MODE

These modes are not used in normal service.
– 16 –
OK
NG
Result of adjustment
NG mode No. (low two digits)