Table of Contents
Advertisement
Check Read Laser
E
Execute 'E.ALPC Test for AS' in
Test Tool (GGOOM5) (select
'VRDC Loop', and 'Trigger').
Check the input of ENBL
(pin 33 of CN201 : 'H').
Check the input of VRDC
(pin 25 of CN201 : 0.4~0.8V).
Check the input of FPDO (pin 54,
65 of IC401 : FPDO~0.1V).
CN 201
Optical
ENBL
Pick-up
KRS-340B
VRDC
FPDO
LD
Drive
Check the input of RLDON
•
(pin 128 of IC401 : 'H').
• Check
(pin 122, 123, 124 of IC401).
Initial value of FPDO : 2.8V +/- 10%.
H
33
5
ENBL
0.4~0.8V
25
63
VRDCO
FPDO-0.1V
19
54
FPDO
65
FPDOLP
Check Laser 2 (No disc).
Execute 'D. Laser Inspection' in
Test Tool (GGOOM5).
OFF LEVEL.
VRDC LEVEL FPD.
VWDC1 LEVEL FPD.
VWDC2 FPD.
OK
SCLK, SDATA, XLAT
IC 401
122
123
MT1516
124
ALPC
RLDON
128
NG
Check Reference voltage.
NG
E
NG
F
NG
G
IC 101
MT1518
SCLK
65
SDATA
Decoder
63
Encoder
XLAT
62
Write Strategy
Write S/H Signal
H
57
Micro
Processor
61
Advertisement
Table of Contents
