Pioneer CDX-P1270 Обучение сервисному ремонту - Страница 18

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Pioneer CDX-P1270 Обучение сервисному ремонту
CDX-P1270
- Waveforms
1 RFI
0.5V/div. 0.5µs/div.
Normal mode: play
→
REFO
3 CH1: FD
0.5V/div.
4 CH2: FOR
2V/div.
Test mode: No disc, Focus close
→
REFO
→
REFO
8 CH1: TE
0.5V/div.
9 CH2: TD
0.5V/div.
Test mode: 32 tracks jump (REV)
→
REFO
→
REFO
6 CH1: FE
0.1V/div.
3 CH2: FD
0.2V/div.
Normal mode: Play
→
REFO
→
REFO
18
Note:1. The encircled numbers denote measuring pointes in the circuit diagram.
2. Reference voltage
REFO:2.5V
1 CH1: RFI
2 CH2: MIRR
Test mode: Tracking open
→
REFO
→
REFO
3 CH1: FD
0.2s/div.
5 CH2: FOK
Normal mode: Focus close
→
REFO
→
REFO
8 CH1: TE
0.5ms/div.
9 CH2: TD
Test mode: Single jump (REV)
→
REFO
→
REFO
3 CH1: FD
20ms/div.
0 CH2: MD
Normal mode: Focus close (12cm)
→
REFO
→
REFO
1 CH1: RFI
1V/div.
0.5ms/div.
2 CH2: MIRR
5V/div.
Normal mode: The defect part
REFO
REFO
6 CH1: FE
0.5V/div.
0.2s/div.
7 CH2: XSI
2V/div.
REFO
REFO
GND
8 CH1: TE
0.5V/div.
0.5ms/div.
9 CH2: TD
0.5V/div.
REFO
REFO
3 CH1: FD
0.5V/div.
0.5s/div.
0 CH2: MD
1V/div.
REFO
REFO
1V/div.
0.5ms/div.
5V/div.
passes 800µm
→
→
0.5V/div.
1ms/div.
2V/div.
Normal mode: Focus close
→
→
→
0.5V/div.
5ms/div.
0.5V/div.
Test mode: 100 tracks jump (REV)
→
→
0.5V/div.
0.5s/div.
1V/div.
Normal mode: Focus close (8cm)
→
→