Pioneer DVJ-1000, Service Manual

Page: 139 / 160

DVJ-1000
139
5 6 7 8
5 6
7
8
C
D
F
A
B
E
7.2 PASS / FALL JUDGMENT OF PICK UP
• Pass/fail judgment of pick up
Pick up pass/fail judgment
CHECK POINT
CD : PU LD Power for CD (Wavelength=790ns) is checked within 0.18
±
0.017 mW
DVD : PU LD Power for DVD (Wavelength=650ns) is checked within 0.193
±
0.018 mW
CHECK POINT • LD current: CD LD Typ 55mA Max 65mA / DVD LD Typ 60mA Max 73mA
METHOD CD LD : DVPB ASSY:The voltages (DC value) of both sides of R7011 is measured and divided by 24
DVD LD : DVPB ASSY:The voltages (DC value) of both sides of R7010 is measured and divided by 12
NOTE
CHECK POINT • Focus coil resistance value: 3.7
±
0.55
METHOD FFC is removed from CN7001 of DVPB ASSY after LD short land of PU ASSY, the resistance value
between the terminal board conductor sides of 1 Pin and 2 Pin of FFC is measured.
CHECK POINT • Tracking coil resistance value: 4.3
±
0.65
METHOD FFC is removed from CN7001 of DVPB ASSY after LD short land of PU ASSY, the resistance value
between the terminal board conductor sides of 3 Pin and 4 Pin of FFC is measured.