Pioneer MJ-D508, Руководство по обслуживанию

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MJ-D508
43
Step No. Operation Keys and Operation Method FL Display Status Remarks
1 Power ON while holding the ENTER key and the EJECT Test mode
PLAY key depressed.
2 Press the NAME CLIP key. TEMP The microcomputer starts measuring. : Measuring
value
3 When is 80 or more at this time, the adjustment End
is OK (step 4 and following can be omitted).
: Set value
When is 80 (not passed) TEMP 8 0 80 is the default value (unadjusted).
4 Measure the ambient temperature T (
°
C) andcheck
hat the measuring value ( ) is within the standard
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 DAC MODE key (UP) and the TEMP 7B 7B
INPUT SELECTOR key (DOWN).
6 Press the EDIT/NO key. No Disc Writing to EEPROM is made and
return is made automatically from
test mode to normal mode.
6.2.2 Test Mode 2 (MD Mechanism Assy Adjustment, Check)
Step No. Operation Keys and Operation Method FL Display Status Remarks
1 Power ON while holding the ENTER key and the EJECT Test mode Laser Wavelength:
PLAY key depressed. 780 nm
2 Press the NAME key. ppw PLAY power output status
3 Measure the laser power with an optical power meter. ppw
4 At this time, check that the measuring value (PLAY ppw May be omitted.
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. rpw REC power output status
6 At this time, check that the measuring value (REC rpw
power) meets the standard value of the table on the
right.
7 Press the STOP key. The LD goes out.
1
Temperature Check (Please perform this check soon after the power has been switched on.)
2
Laser Power Check
Note: When IC101 (RF-AMP), IC104 (mechanical controller) or IC110 (EEPROM) has been exchanged or when a correction changing
VD+3 has been made, be sure to correctly perform all steps up to step 6.
TEMP
µ
-com Measuring value
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
79
7A
7B
7C
7D
hex=
( – )
Room Temperature
[ T (
°
C) ]
µ
-com Set value
When the
microcomputer
value is
+
–
hex = Standard Value
( – ) (mW)
+02 to +04 0.69±0.12
–01 to +01 0.67±0.1
–02 to –04 0.63±0.1
TEMP
µ
-com
Measuring value
µ
-com
Set value
hex = Standard Value
( – ) (mW)
+02 to +04 6.18±0.93
–01 to +01 5.79±0.87
–02 to –04 5.47±0.82
CAUTION
• Never look directly at the objective lens. Rec power (rpw) is than ten times greater than Playback power (ppw) is released.
• Never turn the pickup volume and be careful of touch it. Laser power of pickup has been adjusted in the factory shipping.