Sony MZ-R55, Service Manual

Page: 12 / 129

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SECTION 4
TEST MODE
4-1. GENERAL
This set pr ovides the Overall adjustment mode (Assy mode) that
allo ws CD and MO disk to be automaticall
y adjusted when in the
test mode . In this Assy mode , the system discriminates between
CD and MO disk and then automatically perform adjustments for
them in sequence
. If a fault is f ound, the system displa ys its loca-
tion. Also, the Ser vo mode allo ws eac h individual adjustment to be
automatically adjusted.
4-2. TEST MODE SETTING
See page 5.
4-3. TEST MODE STRUCTURE
Test mode
4-4. MANUAL MODE
(1) Servo Mode
• How to Transfer in the Servo Mode:
Mode No. Test Description Check Write
000 Servo mode
010 Offset correction value indication
011 VC offset correction
012 Focus bias correction
013 FE offset correction
014 ABCD offset correction
015 All servo ON
016 Temperature indication
020 Laser power adjustment
021 Laser CD/MO read adjustment
®
(08)
022 Laser MO write adjustment
®
(4C)
023 Sled normal
®
(45)
024 Sled intermittent ® (65)
025 Sled access
®
(30)
030 MO test adjustment
031 MO focus search adjustment
032 MO read FE balance adjustment ® (0F)
033 MO read ABCD level
®
(07)
034 MO write FE balance adjustment
®
(10)
035 MO write ABCD level
®
(18)
036 Laser MO read adjustment ® (08)
037 MO focus gain
®
(30)
038 MO tracking gain
®
(30)
039 MO focus bias
® ®
(06)
040 Low reflection CD test adjustment
041 Low reflection CD focus search adjustment
042 Low reflection CD FE balance adjustment
®
(10)
043 Low reflection CD ABCD level
®
(06)
044 Laser low reflection CD read
®
(08)
045 Low reflection CD focus gain
®
(30)
046 Low reflection CD tracking gain
®
(30)
Mode No. Test Description Check Write
047 Low reflection CD focus bias
® ®
(00)
050 CD test adjustment
051 CD focus search adjustment
052 CD FE balance adjustment
®
(10)
053 CD ABCD level adjustment
®
(15)
054 Laser CD read
®
(08)
055 CD focus gain
®
(30)
056 CD tracking gain
®
(30)
057 CD focus bias
® ®
(00)
060 Recording test
061 32 cluster full recording
062 Recording shock
063 32 cluster full playback
Check : Mode to displa y err or rate and c luster .
Write : Mode to permit adjustment (Default v alue given in paren
theses).
1. Go into the test mode.
2. Press
+
or VOLUME + ke y to set the ser vo mode .
Unit LCD display
3. Press the ke ys belo w to c hang e the mode No.
(
: Increases the one place.
p
: Sets the one place to 0.
This ke y brings the ten place to 0 if the one place is
0.
VOLUME + : Increases the ten place by 10 if the one place is 0.
Increases the adjustment v alue if the one place
is non-zero.
VOLUME – : Decreases the ten place by 10 if the one place is 0.
Decreases the adjustment v alue if the one place is
non-zero.
• How to Adjust in Servo Mode:
1. When the ser vo mode is set to the appr opriate mode f or eac h
adjustment, the lo wer to w digits of the mode No. and the v alue
stored in EEPR OM are displa yed and flashing.
SERVO
XX XX
Adjustment value
(the data can be changed/
written when flashing.)
Mode No.
(The lower two digits are indicated.
Three digits are indicated on the
remote controller LCD.)
SERVO
XX XX
Adjustment value (flashing)
Mode No. (lower two digits)
Manual Mode
Servo Mode
Audio Mode
Mechanism Mode
Power Mode
or VOLUME key
VOLUME key
Overall Adjustment Mode
or VOLUME key
Hybrid Mode (ALL Mode)
+
–
+
=
+
EDIT/ENTER key
MODE key
Key Check Mode
(Assy Mode)