Schematic Diagram - Sony D-EG5 Service Manual

6-4. SCHEMATIC DIAGRAM

Refer to page 24 for IC Block Diagrams.
r
– 19 – – 20 – – 21 –
Note: r Waveforms
• All capacitors are in µF unless otherwise noted. pF: µµF
50 WV or less are not indicated except for electrolytics
1 SERVICE MODE 7
PLAY MODE
and tantalums.
during TRK servo OFF
• All resistors are in Ω and
/ 1 W or less unless otherwise
4
specified.
• ¢ : internal component.
2.4 Vp-p
Note: Note:
The components identi- Les composants identifiés
fied by mark ! or dotted par une marque ! sont cri- 4.2 MHz
line with mark ! are cri- tiques pour la sécurité.
IC502 &ª
IC501 @£
VOLT/DIV : 1 V AC
tical for safety. Ne les remplacer que par
(XPCK)
TIME/DIV : 0.2 µsec (RFO)
Replace only with part une piéce portant le
number specified. numéro spécifié.
2
8
• U : B+ Line.
• H : adjustment for repair.
• Power voltage is dc 4.5V and fed with regulated dc power
2.9 Vp-p
supply from external power voltage jack. (J401)
• Voltages and waveforms are dc with respect to ground
under no-signal conditions.
∗ 136 µ sec 5.8 µ sec
: Impossible to measure
• Voltages are taken with a VOM (Input impedance 10 MΩ). IC502 #§
T401 4
VOLT/DIV : 1 V AC
Voltage variations may be noted due to normal produc-
(RFCK)
TIME/DIV : 50 µsec
tion tolerances.
• Waveforms are taken with a oscilloscope.
3 9
Voltage variations may be noted due to normal produc-
tion tolerances.
• Circled numbers refer to waveforms.
• Signal path.
2.9 Vp-p
J : CD
22.7 µ sec 5.8 µ sec
T401 2
IC502 ^•
VOLT/DIV : 1 V AC
(LRCK)
TIME/DIV : 10 µsec
10
4
2.5 Vp-p
5.8 µ sec
0.47 µ sec
Q402
IC502 &º
VOLT/DIV : 1 V AC
GATE
(BCLK) TIME/DIV : 0.2 µsec
5 11
2.6 Vp-p
5.8 µ sec
16.9 MHz
IC301 !§
Q401
VOLT/DIV : 1 V AC
(XTLO) BASE
TIME/DIV : 50 nsec
12
6
3.0 Vp-p
5.8 µ sec
4.19 MHz
IC401 @ª
IC801 @º
VOLT/DIV : 1 V AC
(OSC2) TIME/DIV : 0.2 µsec (VOUT2)
– 22 – – 23 –
D-EG5/EG5CK/EG7
0.8–1.2 Vp-p
VOLT/DIV : 0.2 V AC
TIME/DIV : 0.5 msec
4.1 Vp-p
VOLT/DIV : 1 V AC
TIME/DIV : 2 µsec
9.0 Vp-p
VOLT/DIV : 2 V AC
TIME/DIV : 2 µsec
5.1 Vp-p
VOLT/DIV : 2 V AC
TIME/DIV : 2 µsec
9 Vp-p
VOLT/DIV : 2 V AC
TIME/DIV : 2 µsec
5.3 Vp-p
VOLT/DIV : 2 V AC
TIME/DIV : 2 µsec