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Yamaha MDX-E300 Service Manual page 16

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MDX-E300
Details of Test Mode
1. EJECT mode
Step
Setting method
1
EJECT status in the TEST mode
2
Press the INPUT button (REMOCON).
3
Press the INPUT button (REMOCON).
4
Press the INPUT button (REMOCON).
5
Press the TITLE edit button (REMOCON).
6
Press the CHARA. button (REMOCON).
7
Press the DISPLAY button (REMOCON).
8
Press the DELETE/CANCEL button (REMOCON).
Check procedure Mode
q
Playback power output "ppw"
w
Recording power output "rpw"
"rpw" not achieved.
*1: Poor soldering of the line at Pin 100 of IC1401.
Check the line of Pin 93 of IC1401 for short and poor soldering. (Check all the way to the SW P.C.B.)
*2: Check the line of Pin 3 of IC1401 for poor soldering and short with other patterns.
Check the pick-up laser for breakage.
G Confirmation of pick-up laser power
Recording and reproduction can be checked by using the
laser power meter. However it should be used for check-
ing only because there is variation in its measurement.
When the measured value is excessively deviated from
the reference value, replace the pick-up.
Reference value (measured at room temperature of
25 °C)
During reproduction (ppw) : 0.72 ± 0.1 mW
During recording : 5.5 ± 0.5 mW
Note : Be very careful when using the laser power meter.
The laser beam would cause damage to your eye if
exposed to it directly.
16
Remark
EJECT menu (No disc is loaded.)
Reproduction power output status
Recording power output status
Since this mode is not required for servicing , proceed to another mode promptly.
To TEMP setting
(Refer to TEMP setting)
To CONTROL1 setting
To CONTROL2 setting
EJECT menu
Check item
Judgement
(Pin 3 of IC1401)
OK (Move on to check w.)
DC 0.2V
DC 1.5V
NG
DC 1.8V
OK (End of checking.)
Less than DC1.5V NG
NG
G TEMP (temperature standard) setting
(Make this setting quickly when the room tempera-
ture is within the range of 21 ˚C to 29 ˚C and the
P.C.B. is cold.)
(1) Set to the TEMP setting mode menu.
(2) Make temperature correction based on the ambient
temperature and according to the following table.
Ambient temperature
+ 21.0 ˚C ~ + 23.2 ˚C
+ 23.3 ˚C ~ + 26.8 ˚C
+ 26.9 ˚C ~ + 30.7 ˚C
Example : When the temperature measured value is 7A
and the ambient temperature is 22 ˚C:
7A
H
* If the temperature measured value deflects between two val-
ues, use the smaller value (If 7A
ample, use 79
(3) Using the jog dial, match the value obtained in Step
(2) with the temperature setting value.
Example : When the temperature measured value is 7A
and the ambient temperature is 22 ˚C:
Possible cause and check content
Perform *1.
Perform *2.
Perform *1.
❍ ❍ N N
[ TEMP
]
❍ ❍
: Temperature measured value
N N
: Temperature setting value
Correction value
(measured value) - 01
(correction value) = 79
H
and 79
H
.)
H
[ TEMP 7A 79 ]
Temperature setting value
(Jog dial)
Display
[ _ _ EJECT _ _ _ ]
[ ppw _ _ _ _ _ _ _ ]
[ rpw _ _ _ _ _ _ _ ]
[ xpw _ _ _ _ _ _ _ ]
[ TEMP _❍ ❍ _N N]
[ CONTROL1 _ 08 ]
[ CONTROL2 _ 02 ]
[ _ _ EJECT _ _ _ ]
– 1
H
± 0
H
+ 1
H
H
(setting value)
H
in the above ex-
H
H

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