– 19 – – 20 – – 22 –– 21 – – 23 –
D-EG5/EG5CK/EG7
Note:
• All capacitors are in µF unless otherwise noted. pF: µµF
50 WV or less are not indicated except for electrolytics
and tantalums.
• All resistors are in Ωand 1/4W or less unless otherwise
specified.
•¢: internal component.
Note: Note:
The components identi- Les composants identifiés
fied by mark !or dotted par une marque !sont cri-
line with mark !are cri- tiques pour la sécurité.
tical for safety. Ne les remplacer que par
Replace only with part une piéce portant le
number specified. numéro spécifié.
•U: B+ Line.
•H: adjustment for repair.
• Powervoltage isdc 4.5V and fed with regulated dc power
supply from external power voltage jack.(J401)
• Voltages and waveforms are dc with respect to ground
under no-signal conditions.
∗: Impossible to measure
• Voltagesare takenwith a VOM (Inputimpedance 10 MΩ).
Voltage variations may be noted due to normal produc-
tion tolerances.
• Waveforms are taken with a oscilloscope.
Voltage variations may be noted due to normal produc-
tion tolerances.
• Circled numbers refer to waveforms.
• Signal path.
J: CD
6-4. SCHEMATIC DIAGRAM rRefer to page 24 for IC Block Diagrams.
rWaveforms
1
IC502 &ª
(XPCK)
5
9
2
6
10
3
7
4
8
SERVICE MODE
during TRK servo OFF
VOLT/DIV : 1 V AC
TIME/DIV : 0.2 µsec
IC301 !§
(XTLO)
T401 2
IC502 #§
(RFCK)
IC801 @º
(OSC2)
Q402
GATE
IC502 ^•
(LRCK)
IC501 @£
(RFO)
IC502 &º
(BCLK)
T401 4
VOLT/DIV: 1 V AC
TIME/DIV : 50 µsec
VOLT/DIV: 1 V AC
TIME/DIV : 10 µsec
VOLT/DIV : 1 V AC
TIME/DIV : 0.2 µsec
VOLT/DIV : 1 V AC
TIME/DIV : 50 nsec
VOLT/DIV: 1 V AC
TIME/DIV : 0.2 µsec
PLAYMODE
VOLT/DIV: 0.2 V AC
TIME/DIV : 0.5 msec
VOLT/DIV : 1 V AC
TIME/DIV : 2 µsec
VOLT/DIV : 2 VAC
TIME/DIV : 2 µsec
VOLT/DIV : 2 VAC
TIME/DIV : 2 µsec
2.4 Vp-p
4.2 MHz
2.9 Vp-
