Note For Printed Wiring Boards And Schematic Diagrams; Printed Wiring Board - Ym-A01 Board - Sony Glasstron PLM-A35 Service Manual

PLM-A35
4-4.

NOTE FOR PRINTED WIRING BOARDS AND SCHEMATIC DIAGRAMS

Note on Printed Wiring Board: Note on Schematic Diagram:
• X : parts extracted from the component side. • All capacitors are in µF unless otherwise noted. pF: µµF
• Y : parts extracted from the conductor side. 50 WV or less are not indicated except for electrolytics
• b : Pattern from the side which enables seeing. and tantalums.
• All resistors are in Ω and
(The other layers' patterns are not indicated.)
specified.
Caution:
• f
Pattern face side: Parts on the pattern face side seen from • C : panel designation.
(Side B) the pattern face are indicated.
Note:
Parts face side: Parts on the parts face side seen from
The components identi-
(Side A) the parts face are indicated.
fied by mark 0 or dotted
line with mark 0 are criti-
• YM-A01, RG-A01, HP-A01, and DD-A02 boards are multi-
cal for safety.
layer printed board.
Replace only with part
However, the patterns of intermediate-layer have not been
included in the diagram. number specified.
• U : B+ Line.
• Indication of transistor
• Power voltage is dc 9 V and fed with regulated dc power
supply from external power voltage jack.
C
• Voltages and waveforms are dc with respect to ground in
These are omitted. Q
color-bar signal input.
no mark : VIDEO MODE
B E
• Voltages are taken with a VOM (Input impedance 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.
F
L : VIDEO
4-8
1 / W or less unless otherwise
4
: internal component.
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.
: AUDIO
4-5. PRINTED WIRING BOARD – YM-A01 Board –
• Semiconductor
Location
(Side A)
Ref. No. Location
D307 A-5
D316 C-4
D410 C-7
D411 C-7
IC302 A-7
IC303 A-4
(Page 4-17)
IC304 A-4
Q203 C-6
Q304 A-5
(Page 4-26)
• Semiconductor
Location
(Side B)
Ref. No. Location
D311 A-2
D401 B-7
D402 C-7
D403 B-7
D404 C-7
D405 C-6
D406 C-7
D407 C-7
D408 C-7
D409 C-7
IC201 C-2
IC301 A-6
IC401 C-5
IC402 C-6
IC404 C-4
IC405 C-4
IC407 C-3
Q201 C-6
Q202 C-6
Q301 A-3
(Page 4-21)
Q302 A-3
Q303 A-4
Q305 A-7
Q401 B-4
Q402 C-4
(Page 4-18)
Q408 B-3
Q413 B-4
4-9 4-10