Pc Board - Onkyo TX-8255 Service Manual

A
SCHEMATIC DIAGRAMS-4
POWER SUPPLY SECTION
NAPS-8880
1
U05
POWER SUPPLY PC BOARD
P901 P901A
AC-H
AC-G
AC IN
MDC : 120V, 60Hz
MPP : 230 - 240V , 50Hz
T902
MDC : NPT-1520JQ
MPP : NPT-1520GQ
2
3
1SS355
1SS355
P991
4
B
P910
AC OUTLET
SWITCHED
C912
103M/275
T902
RL902
D912
1SS355
C902
104Z
NC R915
J905 150(1/2W)
Q901
NC
SI-3010KF
D901
D902
D903
R908
10K
D904
D905
C991
104Z
D906
D991
D908
D992
R909
C906
100K 4.7/50
D909
D901 - 906 : 1SS355
CAUTION
FOR CONTINUED PROTECTION THIS SYMBOL LOCATED NEAR THE FUSE INDICATES
AGAINST FIRE HAZARD, REPLACE THAT THE FUSE USED IS SLOW OPERATING TYPE
FOR CONTINUED PROTECTION AGAINST FIRE
ONLY WITH FUSE OF SAME TYPE
A V HAZARD,REPLACE WITH SAME TYPE FUSE. FOR FUSE
AND RATING INDICATED.
RATING REFER TO THE MARKING ADJACENT TO THE SYMBOL.
ATTENTION
AFIN D'ASSURER UNE PROTECTION
CE SYMBOLE INDIQUE QUE LE FUSIBLE UTLISE EST
PERMANENTE CONTRE LES RISQUES
E LENT.POUR UNE PROTECTION PERMANENTE,N'UTILISER
D'INCENDIE, REMPLACER UNIQUEMENT
A V QUE DES FUSIBLES DE MEME TYPE. CE DARNIER EST
PAR UN FUSIBLE DE MEME TYPE
ET CALIBRATION COMME INDIQUE. INDIQUE LA QU LE PRESENT SYMBOL EST APPOSE.
C
NC
F903 LIST
VOLTAGE
SELECTOR
J931 NC
F901
S901 LIST
NC
J932
240V
120V
F902
LIST
Q912
KTC3199-GR
R913
1K
+2.7V
R914
100K
D913
1SS355
J906
+15.3V
C907
100/35
MPUGND
POWER
+10S
POFF
+12VS
RLGND
J907
D914
UDZ5.1B
+5.7V
D
MAIN TRANS.
T901
MDC : NPT-1544D
MPP : NPT-1544P
18
17
1
1
NC
16
3 3 15
14
13
5
NC NC
12
11
7
7 10
9
8
U06
TRANS PRI. TERMINAL

PC BOARD

NAETC-8881
Refer to following table about the parts displayed by mark "LIST".
TYPE ---> MDC MPP
F901 5A125V None
F902 None T2.5AL250V
F903 5A125V T2.5AL250V
1
2
MICROPROCESSOR PCB
3
To NADG-8876
4
SD-2 : G4
5
6
NOTE
THE COMPONENTS IDENTIFIED BY MARK !
REPLACE ONLY WITH PART NUMBER SPECIFIED.
VOLTAGE (MEASURED WITH VOLTMETER)
ALL PNP TRANSISTORS ARE EQUIVALENT TO 2SA1015-GR UNLESS OTHERWISE NOTED.
ALL NPN TRANSISTORS ARE EQUIVALENT TO 2SC1815-GR UNLESS OTHERWISE NOTED.
ALL DIODES ARE EQUIVALENT TO 1SS133 UNLESS OTHERWISE NOTED.
ELECTROLYTIC CAPACITORS ( ) ARE IN uF/WV.
ALL CAPACITORS ARE IN pF/50WV UNLESS OTHERWISE NOTED.
EX) 030- 3pF 330- 33pF 331- 330pF 333- 0.033uF
ALL RESISTORS ARE IN OHMS 1/4WATTS UNLESS OTHERWISE NOTED.
THE THICK LINES ON PC BOARD ARE THE PRINTING SIDE OF THE PARTS.
EX) PRINTING SIDE
CIRCUIT IS SUBJECT TO CHANGE FOR IMPROVEMENT.
<Note>
NC = No mount of parts.
SD-Z : XY
Location of connected terminal in schematic diagrams.
SD-Z = Schematic diagrams-Z. X = A to H, Y = 1 to 5.
TX-8255
E
TRANS. SEC. TERMINAL PCB
To NAPS-8887
SD-1 : G4
ARE CRITICAL FOR SAFETY
IS DC VOLTAGE.(NO INPUT SIGNAL).