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oscilloscope
BD board
TP (TE)
TP (VC)
When a general remote commander is not used:
1.
Solder lead wires to TP (DVDD) and TP (TOFF) on the BD
board severally.
2.
Connect the oscilloscope to TP (TE) of the BD board.
3.
Press the POWER button to turn ON the power.
4.
Open the front cover, and press the CD PLUS ONE button.
5.
Set the disc (YEDS-18) into the “PLUS ONE” slit.
6.
Close the front cover, and chuck the disc.
7.
Playback the fifth track of the disc.
8.
Short-circuit the lead wire connected at step 1. (The tracking
servo is turned OFF)
9.
Check the level B of the oscilliscope's waveform and the A
(DC voltage) of the center of the Traverse waveform.
Confirm the following :
A/B x 100 = less than ± 10%
Traverse waveform
A (DC voltage)
10. Disconnect the lead wire short-circuited at step 8. (The tracking
servo is turned ON.) Confirm the C (DC voltage) is almost equal
to the A (DC voltage) is step 8.
Traverse waveform
0V
11. Turn OFF the power, and remove the lead wire connected at
RF PLL Free-run Frequency Check
Connect the frequency counter to TP (PLCK) of the BD board.
frequency counter
B
Center of the waveform
level : 0.7 ± 0.3 Vp-p
C (DC
voltage)
Tracking servo
ON
TP (PLCK)
2.
Press the POWER button to turn ON the power.
3.
Open the front cover, and press the CD PLUS ONE button.
4.
Set the disc (YEDS-18) into the “PLUS ONE” slit.
5.
Close the front cover, and chuck the disc.
6.
Playback the fifth track of the disc.
7.
Confirm that reading on frequency counter is 4.3218 MHz ±
30 kHz.
Adjustment Location :
[ BD BOARD ] — CONDUCTOR SIDE —
IC102
IC101
TP
(VC)
TP
(TE)
TP
(FE)
TP
(RF)
TP
(PLCK)
CN101
CN102
CN103
About RV402 on the MAIN board
RV402 of the MAIN board requires no adjustments. Please note
that it should be dixed to mechanical center position when you
moved and do not know origin position.
TP
(DVDD)
[ MAIN BOARD ] — COMPONENT SIDE —
0V
TP
(TOFF)
RV301
RV351
CN106
CN301
CN107
CN302
IC301
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