- 2-4 -
When laser does not light.
A
Is “2.4V~3.4V” applied to
pin42 of IC501?
(
➀
3.4V
➁
2.4V)
Did pickup return to
innermost circular?
Does it stop at inner pick
circular after shift?
Is defect output from LMT
SW applied to Pin7 of
PN503?
Is data transferred from
MICOM IC ?
Does voltage appear at
IC503 Pin 13, 14?
Defective MICOM or CN503.
Defective IC501.
Defective slide motor and/or
connector. (CN502)
Defective LMT SW and/or
connector. (CN502,CN503)
Defective MICOM.
Defective IC501
Is power supplied to laser Q541?
(Q541 collector: about 1.8V)
OV
YES
YES
YES
YES
YES
YES
NO
NO
NO
NO
NO
NO
OPEN CLOSE
Summary of Contents for LAC-M1600
Page 12: ... 2 7 INTERNAL BLOCK DIAGRAM of ICs AV_CAR 1 Micom Port Assignment ...
Page 13: ... 2 8 2 Pin Descriptions ...
Page 14: ... 2 9 ...
Page 15: ... 2 10 BD3805F 1 BLOCK DIAGRAM ...
Page 16: ... 2 11 MN6627933CN DSP 1 Connection Diagram ...
Page 17: ... 2 12 TA8275HQ 1 Block Diagram ...
Page 18: ... 2 13 upd78f0546 Micom 1 Block Diagram ...
Page 19: ... 2 14 2 Pin lay out ...
Page 22: ... BLOCK DIAGRAM 2 17 2 18 ...
Page 23: ...2 19 2 20 SCHEMATIC DIAGRAMS MAIN SCHEMATIC DIAGRAM ...
Page 24: ...2 21 2 22 MAIN 2 SCHEMATIC DIAGRAM ...
Page 25: ...2 23 2 24 FRONT SCHEMATIC DIAGRAM ...
Page 26: ...2 25 2 26 CD SCHEMATIC DIAGRAM ...
Page 27: ...2 27 2 28 PRINTED CIRCUIT BOARD DIAGRAMS MAIN P C BOARD DIAGRAM ...
Page 28: ...2 29 2 30 FRONT TRIM P C BOARD DIAGRAM LED P C BOARD ...
Page 29: ...2 31 2 32 CD P C BOARD ...
