Service manual

DEH-3750MP/XU/GS
32
1234
1234
C
D
F
A
B
E
- Waveforms Note : 1. The encircled numbers denote measuring points in the circuit diagram.
2. Reference voltage REFO1(1.65V)
1 DSCSNS
2 8SNS
3 12SNS
4 LOEJ
5V/div
5V/div
5V/div
5V/div
500ms/div
12 cm CD Loading operation
Ref.:
GND
Mode:
Normal
1 DSCSNS
2 8SNS
3 12SNS
4 LOEJ
5V/div
5V/div
5V/div
5V/div
500ms/div
Ref.:
GND
Mode:
Normal
1 DSCSNS
5 CLCONT
4 LOEJ
6 VD
5V/div
5V/div
5V/div
10V/div
500ms/div
12 cm CD Loading operation 8 cm CD Loading operation
Ref.:
GND
Mode:
Normal
0 FIN
! RFOK
7 SIN
200mV/div
2V/div
2V/div
500ms/div
12 cm CD-DA Source On setup operation
Ref.:
REFO
Mode:
Normal
# FE
0 FIN
@ TE
9 TIN
500mV/div
500mV/div
500mV/div
500mV/div
20ms/div
Ref.:
REFO
Mode:
Normal
@ TE
# FE
500mV/div
500mV/div
200ms/div
Source On setup operation CD-DA Play operation
Ref.:
REFO
Mode:
Normal
# FE
0 FIN
@ TE
9 TIN
500mV/div
500mV/div
500mV/div
500mV/div
20ms/div
CD-ROM play operation(Regular track Jump)
Ref.:
REFO
Mode:
Normal
$ MDX
7 SIN
2V/div
1V/div
5µs/div
Ref.:
REFO
Mode:
Normal
$ MDX
7 SIN
1V/div
200mV/div
50ms/div
Spindle waveform during play operation Spindle waveform during play operation
(Wider)
Ref.:
REFO
Mode:
Normal
7 SIN
8 CIN
9 TIN
1V/div
500mV/div
500mV/div
2s/div
12 cm CD-DA setup operation after loading 12 cm CD-ROM(3 sessions) setup operation
after loading
Ref.:
REFO
Mode:
Normal
7 SIN
8 CIN
9 TIN
1V/div
500mV/div
500mV/div
2s/div
Ref.:
REFO
Mode:
Normal
7 SIN
8 CIN
9 TIN
1V/div
500mV/div
500mV/div
1s/div
12 cm CD-ROM(1 session) setup operation
after loading
Ref.:
REFO
Mode:
Normal