26
1
2
4
1
2
4
F
E
D
C
B
A
DEH-P250/XM/UC
-
Waveforms
Note : 1. The encircled numbers denote measuring points in the circuit diagram.
2. Reference voltage REFO1(1.65V)
1
DSCSNS
2
CLCONT
3
LOEJ
4
VD
5V/div
5V/div
5V/div
10V/div
500ms/div
When loading a 12cm CD
Ref.:
GND
Mode:
Normal
5
SIN
6
CIN
7
TIN
1V/div
500mV/div
500mV/div
2s/div
When setting up after loading a 12cm CD-DA
disc
Ref.:
REFO
Mode:
Normal
1
DSCSNS
2
CLCONT
3
LOEJ
4
VD
5V/div
5V/div
5V/div
10V/div
500ms/div
When loading an 8cm CD
Ref.:
GND
Mode:
Normal
@
MDX
5
SIN
500mV/div
1V/div
5ms/div
Spindle waveform during "Play"
#
RFAGC
500mV/div
0.5
µ
s/div
Ref.:
REFO
Mode:
Normal
@
MDX
5
SIN
500mV/div
1V/div
5
µ
s/div
Spindle waveform during "Play"(Magnified)
RF eye pattern
Ref.:
REFO
Mode:
Normal
Focus Search
Ref.:
REFO
Mode:
TEST
#
RFAGC
0
TE
7
TIN
1V/div
500mV/div
500mV/div
500
µ
s/div
Ref.:
REFO
Mode:
TEST
0
TE
#
RFAGC
500mV/div
500mV/div
2ms/div
When "Tracking Open"
1 Track Jump
Ref.:
REFO
Mode:
TEST
8
FIN
9
RFOK
5
SIN
200mV/div
2V/div
2V/div
500ms/div
When setting up "Source On"(12cm CD-DA)
During "Play"(CD-DA)
Ref.:
REFO
Mode:
Normal
!
FE
8
FIN
0
TE
7
TIN
500mV/div
500mV/div
500mV/div
500mV/div
20ms/div
Ref.:
REFO
Mode:
Normal
0
TE
!
FE
500mV/div
500mV/div
200ms/div
When setting up "Source On"
Ref.:
REFO
Mode:
Normal
www. xiaoyu163. com
QQ 376315150
9
9
2
8
9
4
2
9
8
TEL 13942296513
9
9
2
8
9
4
2
9
8
0
5
1
5
1
3
6
7
3
Q
Q
TEL 13942296513 QQ 376315150 892498299
TEL 13942296513 QQ 376315150 892498299
