CMT-CP2W, HCD-CP2 - Sony Audio Service Manual (repair manual). Page 13

13

1. Press the

u

button to enter the ALL SERVO ON mode and

display as below. (All servo ON)

2. Connect an oscilloscope to TP (RF) and TP (VC) on the CD

board.

3. Confirm the RF level of waveform satisfy specified value as

follows.

Specified value:
RF level: 1 

±

 0.3 Vp-p

1. Press the

x

button to enter the LPC OFF mode and display

as below. (LPC OFF)

2. Confirm the RF level of waveform is the same as the RF level

in “4. ALL SERVO ON mode”.
If the RF level is down from the RF level in “4. ALL SERVO
ON mode”, measure again after clean the object lens by an
applicator with lens cleaning liquid.

1. Press the

x

(CD) button to stop rotate the disc.

2. Press the

?/1

button to release the CD test mode and turn the

power OFF.

Display

P L

*  *  *  *

STEREO

+
–

BD board

TP (RF)
TP (VC)

oscilloscope

(DC range)

VOLT/DIV: 200 mV
TIME/DIV: 500 ns

level:
1.2 

±

 0.1 Vp-p

RF signal waveform

Display

P L

*  *  *  *

TP (RF)

TP (VC)

IC701

IC703

TP (TE)

TP (GND)