Sony MXD-D400 Service Manual page 13

CHECKS PRIOR TO PARTS REPLACEMENT AND ADJUSTMENTS IN MD
Before performing repairs, perform the following checks to determine the faulty locations up to a certain extent.
Details of the procedures are described in "5 Electrical Adjustments".
Criteria for Determination
(Unsatisfactory if specified value is not satisfied)
Laser power check • 0.93 mW power
(5-7-2 : See page 36)
• 8.65 mW power
• Iop (at 8.65mW)
Auto check • Unsatisfactory if displayed as "NG: XXXX"
(5-7-4 : See page 37)
Temperature • Unsatisfactory if displayed as "T=@@ (##) [NG]"
compensation
offset check
(5-7-1 : See page 36)
Note:
The criteria for determination above is intended merely to determine if satisfactory or not, and does not serve as the specified value for adjustments.
When performing adjustments, use the specified values for adjustments.
Specified value : 0.84 to 0.92 mW (KMS-262A)
0.90 to 0.96 mW (KMS-262E)
Specified value : 8.1 to 8.7 mW (KMS-262A)
8.4 to 8.9 mW (KMS-262E)
Labeled on the optical pick-up
Iop value ± 10mA
NG
(XXXX is arbitrary number)
NG
(@@, ## are both arbitrary numbers)
Measure if unsatisfactory:
• Clean the optical pick-up
• Adjust again
• Replace the optical pick-up
• Replace the optical pick-up
• Replace the optical pick-up
• Check for disconnection of the circuits around
D101 (BD (MD) board)
• Check the signals around IC101, IC151, CN102,
CN103 (BD (MD) board)
MXD-D400
13