CDP-CE500 - Sony Audio Service Manual (repair manual). Page 19

CDP-CE500

Note:
1.  CD Block is basically constructed to operate without adjustment.
2.  Use YEDS-18 disc (Part No. 3-702-101-01) unless otherwise indicat-

ed.

3.  Use an oscilloscope with more than 10 M

Ω impedance.

4.  Clean the object lens by an applicator with neutral detergent when the 

signal level is low than specifi ed value with the following checks.

5.  Check the focus bias check when optical pick-up block is replaced.

Procedure:
1.  Connect the oscilloscope to CL102 (RFOUT) and CL117 

(VREF) on the BD75 board.

2.  Press the [

?/1

] button to turn the power on, and select CD 

function.

3.  Set disc (YEDS-18) and play it.
4. Confi rm that oscilloscope waveform is as shown in the fi gure 

below (eye pattern).

 

A good eye pattern means that the diamond shape (

◊) in the 

center of the waveform can be clearly distinguished.

For the mechanism deck check mode, two modes of disc table 
mode and loading mode are available.
In the mechanism deck check mode, the disc table turning time 
and the loading time in each section are measured and displayed.

Procedure:
Disc table mode:
Press three buttons of [x], [ENTER] and [DISC 4] simultaneously.
Loading mode:
Press three buttons of [x], [ENTER] and [DISC 5] simultaneously.

Disc table mode

(Table turning time 

measurement)

0: Right one turn
1: Left one Turn
2: Measurement end

r
L
r

5.7
5.6
5.7

3: Undefi ned

Table mode

(Loading time 
measurement)

4: Star position
5: Open → Close
6: Close → BU up
7: BU up → EX open
8: EX open → EX close
9: EX close → BU down
A: BU down → Open
FF: Measurement end

Sta
Clo
UP
Eop
ECL
don
oPn
CLo

– –.–
1.9
0
1.8
2.0
0.4
1.5
1.9

Display is changed by pressing the [DISPLAY] button.

Releasing method:
Press the [

?/1

] button to turn the power off.