Pioneer PD-F25 - Schematic and PCB Diagrams; Schematic Diagram Notes; PCB Diagram Notes

PD-F25
3. SCHEMATIC AND PCB CONNTCTION DIAGRAMS
NOTE FOR SCHEMATIC DIAGRAMS (Type 4A)
1. When ordering service parts, be sure to refer to
"PARTS LIST of EXPLODED VIEWS" or "PCB
PARTS LIST“.
2. Since these are basic circuits, some parts of them or the
values of some components may be changed for improve
ment.
3. RESISTORS:
Unit: k:kQ, M:MQ, or Q unless otherwise noted.
Rated power: 1/4W, 1/6W, 1/8W, 1/10W unless otherwise
noted.
Tolerance: (F): +1%, (G): 22%, (K): 10%, (M): 20% or +5% un-
less otherwise noted.
4. CAPACITORS:
Unit: p:pF or uF unless otherwise noted.
Ratings: capacitor (uF)/voltage(V) uniess othrewise noted.
Rated voltage: 50V except for electrolytic capacitors.
5. COILS:
Unit: m:mH or pH unless otherwise noted.
6. VOLTAGE AND CURRENT:
L_] ore V:
DC voltage (V) in PLAY mode unless otherwise noted.
< MA or & MA:
DC current in PLAY mode unless otherwise noted.
Value in ( ) is DC current in STOP mode.
7. OTHERS:
¢@ or@ : Adjusting point.
. ~«@ : Measurement point.
¢ The A\ mark found on some component parts indicates the im-
portance of the safety factor of the parts. Therefore, when re-
placing, be sure to use parts of identical designation.
8. SCH-C] ON THE SCHEMATIC DIAGRAM:
* SCH-C indicates the drawing number of the schematic dia
gram. (SCH stands for schematic diagram.)
9. SWITCHES (Underline indicates switch position):
FRNT ASSY
$101 : BEST
$102 : ©(DISC)
$103 : me, mri(SKIP/SCAN)
$104 : RANDOM
$105 : @(DISC)
$106 : ke, <(SKIP/SCAN)
S107 : TIME
$108 : m(STOP)
$109 : »/m(PLAY/PAUSE)
$201 : POWER
$301 : RACK
CD ASSY
$401 : HOME
SW BOARD ASSY
S651 : CLAMP
$652 : EJECT
MECHA. PCB ASSY
S610 : INSIDE
12
NOTE FOR PCB DIAGRAMS
1. Part numbers in PCB diagrams match those in the schematic
diagrams.
2. Acomparison between the main parts of PCB and schematic
diagrams is shown below.
Symbol in PCB Symbol in Schematic
Diagrams Diagrams
BC EBCE
Transistor
BceEBCeE
Part Name
eB eaee|
it]
QO m
Transistor
with resistor
DG@SsoDG Ss
Field effect
transistor
Resistor array
3. The parts mounted on this PCB include all necessary parts
for several destination.
For further information for respecitve destinations, be sure
to check with the schematic diagram.
3-terminal
regulator