Note For Printed Wiring Boards And Schematic Diagrams - Aiwa CX-JV4 Service Manual

6-5.

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
(Conductor Side) the pattern face are indicated.
Parts face side: Parts on the parts face side seen from
(Component Side) the parts face are indicated.
• Indication of transistor.
C
Q
These are omitted.
B E
Q
B C E
These are omitted.
Q
B C E
These are omitted.
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 / W or less unless otherwise
4
specified.
• 2 : nonflammable resistor.
• 5 : fusible resistor.
• C : panel designation.
Note: The components identified by mark 0 or dotted line
with mark 0 are critical for safety.
Replace only with part number specified.
• A : B+ Line.
• B : B– Line.
• Voltages and waveforms are dc with respect to ground
under no-signal conditions.
– BD/CHANGER Section –
no mark : CD PLAY
– VMP Section –
no mark : VIDEO CD PLAY
– Other Sections –
no mark : FM
∗
: Impossible to measure
• 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
: TUNER (FM/AM)
E
: TAPE PLAY (DECK-A)
d
: TAPE PLAY (DECK-B)
G
: REC
J
: CD PLAY (AUDIO)
L : CD PLAY (VIDEO)
j : VIDEO/AUX IN
k : REC OUT
N : MIC INPUT
• Circuit Boards Location
SW board
MOTOR (LD) board
CD KEY board
PT board
PANEL board
HEADPHONE board
KEY board
25 25
SENSOR board
VMP50 board
BD board
MOTOR (TB) board
TUNER (FM/AM)
DRIVER board
TR board
MAIN board
VF board
CX-JV4