Pioneer XR-P740M Service Manual page 16

2.2 SCHEMATIC AND PCB CONNECTION DIAGRAM
NOTE FOR SCHEMATIC DIAGRAMS
(rype 1A)
1. When ordering service parts, be sure to refer to
"PARTS LIST ol EXPLODED VIEWS" or "PCB
PARTS LIST".
2. Sinco tho3c ara basic circuitr, somo parts ol them or the
vducs of 3omc componanB
may bo changsd for improve-
ment.
3. RESISTORS:
Unit: k:kQ, M:MQ, or Q unless otherwise noted.
Rated power: 1/4W, 1/6W, 1/8W, 1/'l0W unless otherwise
noted.
T o f s r a n c e : { F } : 1 1 % , ( G ) : t 2 % , l K l : 1 1 0 % , ( M } : + 2 o o / o o r r 5 o / " u n '
less olhomise noted.
,1. CAPACITORS:
Unit: p:pF or pF unless othemise noted.
Batings: capacitor (FF)/ voltage (V) unless otherwise noted.
Rated voltage: 50V except for electrolytic capacitors.
5. COTLS:
Unit: m:mH or pH unless olherwise noted.
6. VOLTAGE AND CUBRENT:
E
: Signat voltags at rated output.
E o r - V :
DC voltage (V) at no input signal unless otherwise noted.
Value in ( ) is DC voltage at rated power.
€ m A o r - m A :
DC current at no inout sional unless olherwise noted.
7. OTHERS:
. A o t O : A d i u s t i n g p o i n t .
.
: Measurement ooint.
. The A mark tound 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-tr ON THE SCHEMATIC DIAGRAM:
. SCH-O indicates the drawing number of the schematic dia-
gram. {SCH stands lor schematic diagram.)
9. SWITCHES (Underline indicalss switch positionl:
DISPLAY assy
S1801 FREQ/STATION
51802 BAND
S1803 FUNCTION
S1804 POWER STANDBY
s1805 MONO
s1806 P. BASS
S1807 ONE-TOUCH KARAOKE
s1808 ST WIDE(XR-P740M SERIES)
s1 809
s 1 8 1 0
s 1 8 1 1
s 1 8 1 2
s 1 8 1 3
s 1 8 1 4
s 1 8 1 s
s1 901
SURROUND & ST WIDE
(xR-P340M SERTES)
AUTO TUNING
HALL
DISCO
MOVIE
M E M O R Y
WAKE-UP/REC
CLOCK/CLOCK
ADJ
TUNING JOG
ADDON DISPALY assy
(xR-P74oM SERTES ONLY)
53951 CENTER/REAR
LEVEL _
53952 CENTER/REAR
LEVEL +
53953 CENTER MODE
53954 CENTER/REAR
53955 DOLBY MODE
CD DECK SW assy
(xR- P74oM, XR-640M, XR- P340M)
s 1 8 1 6
s 1 8 1 7
s1818 STOP(TAPE)
s 1 8 1 9
s1820 ASES/COPY
s 1 8 2 1 0 l l
S1822 DOLBY NR
s1823 TAPE 1/2
s1824 >> . >>l
s1825 STOP(CD)
S1826 PLAY/PAUSE
s1827
S1828 OPEN/EJECT
s1 8 2 9 K < . + {
s 1 8 3 0 M U L T | 6
s1831 MULTT s
51832 MULTI 1
s1833 MULTT 2
S1834 MULTI 3
S1835 MULTI 4
CD DECK SW assy
(xR-P740, XR-640, XR-P340)
s 1 8 1 6
s 1 8 1 7
s1818 STOP(TAPE)
s 1 8 1 9
s1820 ASES/COPY
s 1 8 2 1 0 t l
51822 DOLBY NR
s1823 TAPE 112
s1824 >> . >>l
s182s STOP(CD)
S1826 PLAY/PAUSE
s1 827
s182s l+{ .+{
S1836 OPEN/CLOSE
X R - P 7 4 O M S e r i e s i n d i c a t e s m o d e l s X R - P 7 4 0 M / S D , Y P W .
X R - P 7 4 0 / S D , X R - P 6 4 O M / S D , Y P W a n d X R - P 6 4 0 / S D .
X R - P 3 4 O M S e r i e s i n d i c a t e s m o d e l s X R - P 3 4 0 M / K U , K C ,
S D , Y P W , X R - P 3 4 0 / S D a n d Y P W .
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