Pioneer MJ-D707 Service Manual page 43

6.2.2 Test Mode 2 (MD Mechanism Assy Adjustment, Check)
1
Temperature Check (Please perform this check soon after the power has been switched on.)
Note: When IC101 (RF-AMP) or IC104 (mechanical controller) has been exchanged or when a correction changing VD+3 has been made,
be sure to correctly perform all steps up to step 7.
Step No. Operation Keys and Operation Method
1 Power ON while holding the ENTER key and the
PLAY key depressed.
2 Press the NAME CLIP key.
3 When is 80 or more at this time, the adjustment
is OK (step 4 and following can be omitted).
When is 80 (not passed)
4 Measure the ambient temperature T ( C) andcheck
hat the measuring value (
in regard to the microcomputer set value (
Note: When the indication of the measuring value
( ) is not stable, and the ambient temperature
T ( C) is 25 C or less, set to the lower value.
When the ambient temperature is over 25 C, set to
the higher value.
5 Change with the TIME SKIP key (UP) and the
A-B key (DOWN).
6 Press the EDIT/NO key.
2
Laser Power Check
Step No. Operation Keys and Operation Method
1 Power ON while holding the ENTER key and the
PLAY key depressed.
2 Press the NAME key.
3 Measure the laser power with an optical power meter.
4 At this time, check that the measuring value (PLAY
power) meets the standard value of the table on the
right.
Note: When the standard value on the right is applied,
the numerical value immediately after entry into test
mode 2 shall be taken as the standard.
5 Press the NAME key.
6 At this time, check that the measuring value (REC
power) meets the standard value of the table on the
right.
7 Press the STOP key.
FL Display
EJECT
TEMP
TEMP
) is within the standard
-com Measuring value
).
Room Temperature
TEMP 7B 7B
No Disc
FL Display
EJECT
ppw
ppw
ppw
rpw
rpw
Status
Test mode
The microcomputer starts measuring.
End
8 0 80 is the default value (unadjusted).
TEMP
hex=
[ T ( C) ] ( – )
11.6 to 16.9 +1 to +3
17.0 to 22.3 0 to +2
22.4 to 27.6 –1 to +1
27.7 to 33.0 0 to –2
33.1 to 38.4 –1 to –3
Writing to EEPROM is made and
return is made automatically from
test mode to normal mode.
Status
Test mode
PLAY power output status
TEMP
-com
Measuring value
hex = Standard Value
( – )
+02 to +04
–01 to +01
–02 to –04
REC power output status
hex = Standard Value
( – )
+02 to +04
–01 to +01
–02 to –04
The LD goes out.
MJ-D707, MJ-17D
Remarks
: Measuring
value
: Set value
-com Set value
–
79
7A
When the
7B
microcomputer
value is
7C
+
7D
Remarks
Laser Wavelength:
780 nm
May be omitted.
-com
Set value
(mW)
0.69±0.12
0.67±0.1
0.63±0.1
(mW)
6.18±0.93
5.79±0.87
5.47±0.82
43