TX-8255
SCHEMATIC DIAGRAMS-4
POWER SUPPLY SECTION
TX-8255
Refer to following table about the parts displayed by mark "
LIST
".
AGAINST FIRE HAZARD, REPLACE
V
A
FOR CONTINUED PROTECTION
AND RATING INDICATED.
ONLY WITH FUSE OF SAME TYPE
CAUTION
ATTENTION
ET CALIBRATION COMME INDIQUE.
D'INCENDIE, REMPLACER UNIQUEMENT
PERMANENTE CONTRE LES RISQUES
AFIN D'ASSURER UNE PROTECTION
PAR UN FUSIBLE DE MEME TYPE
V
A
E LENT.POUR UNE PROTECTION PERMANENTE,N'UTILISER
INDIQUE LA QU LE PRESENT SYMBOL EST APPOSE.
QUE DES FUSIBLES DE MEME TYPE. CE DARNIER EST
CE SYMBOLE INDIQUE QUE LE FUSIBLE UTLISE EST
FOR CONTINUED PROTECTION AGAINST FIRE
RATING REFER TO THE MARKING ADJACENT TO THE SYMBOL.
HAZARD,REPLACE WITH SAME TYPE FUSE. FOR FUSE
THIS SYMBOL LOCATED NEAR THE FUSE INDICATES
THAT THE FUSE USED IS SLOW OPERATING TYPE
<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.
To NAPS-8887
SD-1 : G4
U06
TRANS PRI. TERMINAL
PC BOARD
THE COMPONENTS IDENTIFIED BY MARK ARE CRITICAL FOR SAFETY
REPLACE ONLY WITH PART NUMBER SPECIFIED.
VOLTAGE (MEASURED WITH VOLTMETER) IS DC VOLTAGE.(NO INPUT SIGNAL).
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
MPUGND
POWER
+10S
POFF
RLGND
+12VS
AC-G
AC-H
T902
MDC : NPT-1520JQ
MPP : NPT-1520GQ
240V
120V
NC
NC
NC
NAETC-8881
NAPS-8880
To NADG-8876
SD-2 : G4
THERMAL
FUSE
MAIN TRANS.
NC
MDC
MPP
F902
F903
F901
None
5A125V
5A125V
None
T2.5AL250V
T2.5AL250V
C903
2200/35
+
T902
1
2
3
4
5
6
7
8
9
C906
4.7/50
+
R913
1K
R914
100K
R909
100K
D912
1SS355
D901
D902
D903
D905
D906
D909
D991
1SS355
D992
1SS355
C991
104Z
C902
104Z
D904
D913
1SS355
RL902
D908
D914
UDZ5.1B
S901
F902
J906
J907
J918
Q912
KTC3199-GR
C912
103M/275
D907
NC
J905
R915
150(1/2W)
F901
JL911A
1
2
3
4
5
6
P991
P901A
P912A
P913A
P911A
Q901
SI-3010KF
1
Vc
2
Vin
3
GND
4
Vout
5
ADJ
R905
100K R906
100K
C905 10/50
+
R907
82K
R908
10K
F903
J931
J932
C904
100/35
+
C907
100/35
+
J904
P910
P911B
P913B
P912B
J930
7
3
1
T901
MDC : NPT-1544D
MPP : NPT-1544P
1
3
5
7
8
9
10
11
12
13
14
15
16
17
18
D901 - 906 : 1SS355
AC OUTLET
SWITCHED
U05
POWER SUPPLY PC BOARD
P901
VOLTAGE
SELECTOR
TYPE --->
LIST
LIST
AC IN
MDC : 120V, 60Hz
MPP : 230 - 240V , 50Hz
NC
NC
NC
NC
TRANS. SEC. TERMINAL PCB
MICROPROCESSOR PCB
LIST
+2.7V
+15.3V
+5.7V
A
1
2
3
4
B
C
D
E
