PIONEER DVH-3900MP-XZ-EW5 Repair Manual

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6. DVD ERROR CORRECTION FLOW CHART
A
Something wrong with the DVD system?
6-A~ 6-D
Loading/Unloading?
YES
Checked the ejectNOSee the system error correction
key defect?process with the key control.B
YES
NO
Checked the loadingIC1202(1, 6)
motor IC Vdd?
YES
NOChecked the Load/IC1202(7, 8, 2, 3)
Unload control?See Figure 9, 11
YES
Checked the Load/NOCN1301(2, 4), SW1301, CN1202(13)
Unload SW?See Figure 10, 12
YESC
NOChecked theIC1301(VDD33, VDD12, +3VA)
MPEG Vdd?See Figure 13
YES
Checked theNOIC1301 VSS (1, 23, 35, 46, 63, 81,
MPEG Ground?100, 171, 180, 198, 208, 220, 234, 245)
YES
Checked theNOIC401(23), IC203(5, 6)
MPEG Reset?CN902(10) IC1301 NRST(101)
YES
DNOX1301(1, 3)
Checked the
MPEG X-tal?See Figure 14
YES
NOIC401(84, 85, 86, 29), CN902(4, 5, 6, 7)
Checked the main
Micom data interface?IC1301(84, 85, 86, 87)
YES
Checked the mainNOCN902(4, 5, 6, 7), CN1601(4, 5, 6, 7)
Micom data interface?See Figure 15
YES
NO
Checked the disc
CN1301(2, 4)
in load switch?E
YES
OK
F
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