Pioneer CDX-M8027ZT/E, Service Manual

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2 3 4
1 2 3 4
F
E
D
C
B
A
CDX-M8127ZT/WL
-
Waveforms
1
RFO 0.5V/div. 0.5 µ s/div.
Normal mode: play
1
CH1: RFO 1V/div.
2
CH2: MIRR 5V/div.
Test mode: Tracking open
0.5ms/div.
1
CH1: RFO 1V/div.
2
CH2: MIRR 5V/div.
Normal mode: The defect part
passes 800
µ
m
0.5ms/div.
3
CH1: FD 0.5V/div.
4
CH2: FOP 2V/div.
Test mode: No disc, Focus close
0.2s/div.
3
CH1: FD 0.5V/div.
5
CH2: FOK 2V/div.
Normal mode: Focus close
0.2s/div.
6
CH1: FEY 0.5V/div.
7
CH2: XSI 2V/div.
Normal mode: Focus close
1ms/div.
REFO
→
8
CH1: TEY 0.5V/div.
9
CH2: TD 0.5V/div.
Test mode: 32 tracks jump (FWD)
0.5ms/div.
8
CH1: TEY 0.5V/div.
9
CH2: TD 0.5V/div.
Test mode: Single jump (FWD)
0.5ms/div.
8
CH1: TEY 0.5V/div.
9
CH2: TD 0.5V/div.
Test mode: 100 tracks jump (FWD)
5ms/div.
6
CH1: FEY 0.1V/div.
3
CH2: FD 0.2V/div.
Normal mode: Play
20ms/div.
3
CH1: FD 0.5V/div.
0
CH2: MDYA 1V/div.
Normal mode: Focus close (12cm)
0.5s/div.
3
CH1: FD 0.5V/div.
0
CH2: MDYA 1V/div.
Normal mode: Focus close (8cm)
0.5s/div.
GND
→
GND
→
REFO
→
REFO
→
REFO
→
REFO
→
GND
→
REFO
→
REFO
→
GND
→
REFO
→
REFO
→
REFO
→
REFO
→
REFO
→
REFO
→
REFO
→
REFO
→
REFO
→
REFO
→
REFO
→
REFO
→
Note:1. The encircled numbers denote measuring pointes in the circuit diagram.
2. Reference voltage
REFO:2.5V