Is the waveform
at pin 15 of IC701 like that
shown in figure 14 ?
No
Yes
*
Check circuit around and soldering
pins 12, 13, 14 and 15 of IC701.
*
Check drive unit.
No
Yes
*
Check drive unit.
*
IC702 is defective.
Is the waveform
at pin 12 of IC701 like that
shown in figure 15 ?
No
Yes
*
Check circuit around and soldering
pins 29, 30, 31, 37 and 38 of IC702.
Is pin 49 (GFS) of IC702
low ?
Repair Item 4: FR and FF be operated cannot normally. Selected track number cannot be
searched.
VC
VC
or
VC
VC
or
Figure 15
Figure 14
4
23
Press FR or FF button.
Press FR or FF button.
Press FR or FF button.
Содержание ZD-3
Страница 1: ... without price ZD 3 MD CD SYSTEM SEP 2000 INDEX ...
Страница 48: ...Vo Vadj GND Vin 1 2 3 4 1 2 4 3 IC IC303 IC708 IC709 PQ15RW11 46 ...
Страница 57: ...IC707 S 80727AL AQ T1 2 VDD VSS 3 Parasitic Diode 1 OUT 1 2 3 55 ...
Страница 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 ...
Страница 68: ...122 122 122 122 9P 11P 2P 7P 6P 109 107 108 400 UNIT ASSEMBLY 3 3 66 ...
Страница 69: ...331 331 351 347 345 339 334 351 344 346 348 CASE UNIT 67 ...
Страница 70: ...315 316 317 318 305 303 303 304 323 304 306 16P 6P TOP CASE UNIT 68 ...
Страница 71: ...MD MECHANISM UNIT 69 ...
Страница 72: ...CD MECHANISM 70 ...