Pioneer PD-M427 Service Manual page 25

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3 7 63 1515 0
5. RF Level Adjustment
Test mode
SPDL servo
FOCUS servo
TRKG servo
TEST DISC
START
TE
L 13942296513
6. Focus Best Adjustment
Test mode
SPDL servo
FOCUS servo
TRKG servo
TEST DISC
START
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MOTHER BOARD ASSY
.
http://www.xiaoyu163.com
=
CLOSE
=
CLOSE
=
CLOSE
Innermost
circumference
(1 TRK)
PLAY
TP1
(CN201)
1 1
RF
4
VC
MOTHER BOARD ASSY
=
CLOSE
=
CLOSE
=
CLOSE
Innermost
circumference
(1 TRK)
PLAY
MOTHER BOARD ASSY
Player
TP1
(CN201)
6
FE
1
RF
4
VC
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i
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8
VR153
MOTHER BOARD ASSY
Player
Prove (10:1)
GND
Q Q
3 6 7 1 3
VR156
Prove(10:1)
Prove(10:1)
u163
.
PD-M427, PD-M407
2 9 9 4 2 8
1.2VP-P
±0.1V
Oscilloscope
AC Mode
V: 50mV/div
H: 10mSec/div
1 5 0 5 8 2 9 9 4
MAX
Adjust the RF level to maximum, with the
focus error voltage within ±150mV.
Oscilloscope
DC Mode
CH1: 5mV/div
CH2: 20mV/div
H: 200ns/div
m
co
9 9
2 8 9 9
25