Pioneer DEH-1550 XU, Service Manual

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1
2 3 4
1 2 3 4
F
E
D
C
B
A
DEH-1550/XU/ES
-
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"
Ref.:
REFO
Mode:
Normal
#
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
8
FIN
!
FE
500mV/div
500mV/div 200ms/div
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