Note For Printed Wiring Boards And Schematic Diagrams - Aiwa CX-JPK33 Service Manual

6-4.

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.)
• Indication of transistor.
C
Q
These are omitted.
B E
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.
•
: internal component.
f
• 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 Section –
no mark : CD PLAY
– Other Sections –
no mark : FM
( ) : TAPE PLAY
〈〈 〉〉 : TAPE REC
[ ] : CD PLAY
∗
: 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
L : AUX IN
• Abbreviation
E51 : Chilean and Peruvian models
MX : Mexican model
• Circuit Boards Location
TRANS board
PANEL board
HEADPHONE board
SW board
MOTOR (LD) board
25 25
CX-JPK33
SUB TRANS board
CDMP3 CONNECT board
MAIN board
POWER board
SENSOR board
CD board
MOTOR (TB) board