2. TOC can not be read.
Yes
TOC can not be read.
Does the LASER emit ?
*
Check output level control of pickup or laser.
*
Pickup or laser is defective.
No
Does pickup move in the
direction of sled motor ?
*
Sled motor, drive circuit or limit switch is
defective.
No
No
Is RF waveform normal ?
No
Yes
Yes
Yes
Is TE and FE
signals present at the output
terminals ?
*
Check circuit around IC101.
*
IC101 is defective.
No
Yes
*
Circuit around mechamicon is
defective.
26
Is pickup lens dirty?
*
Clean pickup lens.
*
Check circuit around IC101.
*
IC101 is defective.
No
Yes
Does spindle motor rorate?
*
Check circuit around pickup.
*
Spindle motor is defective.
Summary of Contents for ZD-3
Page 1: ... without price ZD 3 MD CD SYSTEM SEP 2000 INDEX ...
Page 48: ...Vo Vadj GND Vin 1 2 3 4 1 2 4 3 IC IC303 IC708 IC709 PQ15RW11 46 ...
Page 57: ...IC707 S 80727AL AQ T1 2 VDD VSS 3 Parasitic Diode 1 OUT 1 2 3 55 ...
Page 67: ...5P 6P 12P 210 116 114 117 300 118 250 2 2 250 1 2 8P 230 4P 3P UNIT ASSEMBLY 2 3 65 ...
Page 68: ...122 122 122 122 9P 11P 2P 7P 6P 109 107 108 400 UNIT ASSEMBLY 3 3 66 ...
Page 69: ...331 331 351 347 345 339 334 351 344 346 348 CASE UNIT 67 ...
Page 70: ...315 316 317 318 305 303 303 304 323 304 306 16P 6P TOP CASE UNIT 68 ...
Page 71: ...MD MECHANISM UNIT 69 ...
Page 72: ...CD MECHANISM 70 ...