Aiwa XP-SP30 Service Manual page 10

XP-SP30
NOTE FOR PRINTED WIRING BOARDS AND SCHEMATIC DIAGRAMS
Note on Printed Wiring Board
• X : parts extracted from the component side.
• Y : parts extracted from the conductor side.
• : Pattern from the side which enables seeing.
(The other layers' patterns are not indicated.)
Caution:
Pattern face side: Parts on the pattern face side seen from
(Side A) the pattern face are indicated.
Parts face side: Parts on the parts face side seen from
(Side B) the parts face are indicated.
• MAIN board is multi-layer printed board. However, the pat-
terns of intermediate-layer have not been included in the dia-
gram.
• WAVEFORMS
1
IC402 if RFAC
100mV/DIV, 400ns/DIV
550 mVp-p
5
IC201 ef SYNC
1V/DIV, 2us/DIV
2.2 Vp-p
5.6us
10
SECTION 5
DIAGRAMS
2
IC402 rk XTAO
1V/DIV, 20ns/DIV
2.5 Vp-p
59ns
Note on Schematic Diagram:
• 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 Ω and
1
• % : indicates tolerance.
• C : panel designation.
Note:
The components identi-
fied by mark 0 or dotted
line with mark 0 are criti-
cal for safety.
Replace only with part
number specified.
• A : B+ Line.
• Total current is measured with CD installed.
• Power voltage is dc 4.5 V and fed with regulated dc power supply
from DC IN jack (J201).
• Voltages and waveforms are dc with respect to ground in playback
mode.
no mark : CD PLAY
• Voltages are taken with a VOM (Input impedance 10 MΩ).
Voltage variations may be noted due to normal production toler-
ances.
• Waveforms are taken with a oscilloscope.
Voltage variations may be noted due to normal production toler-
ances.
• Circled numbers refer to waveforms.
• Signal path.
J
: CD
3
IC301 2 XIN
1V/DIV, 100ns/DIV
2.3 Vp-p
236ns
/ W or less unless otherwise specified.
4
Note:
Les composants identifiés par
une marque 0 sont critiques
pour la sécurité.
Ne les remplacer que par une
piéce por tant le numéro
spécifié.
4
IC301 qk MSCK-O
1V/DIV, 400ns/DIV
2.3 Vp-p
932us