Olivetti ECR 7900 Service Manual page 104

1 2
D
C
CT-89A
CN2
DC12V 1500mA
1
2
DC23V 200mA
3
AC115V 60Hz
4
5
AC25V 0.1A
6
7
AC4V 0.5A B7P-SHF-1AA
B
A
1 2
98 ECR 7900 Service Manual
3 4
F1 D1
A K
TR-5 19370 1.6A 1SR154-400
(125V/F1.6AL)
R1
10k
B
Q2
2SA1036K
R3 C1 R4
+ 4.7k
0.1uF_50V
22k Q3
DTC143EKA
B
D3 D4
A K A K
DSA26C DSA26C
R6
10K
D5 D6
A K A K
EC5
DSA26C DSA26C
+
F2 15000uF_25V
FH1 FH2
CQ-203B CQ-203B
0218-004
(250V/T4AL)
R8
EC6 10k ZD2
100uF_50V RD30EB3
+
R9
3.3k
D7
F3
K A C E
Q4
1SR154-400
TR-5 19370 0.5A
2SA1284D
F4
(125V/F500mAL)
TR-5 19370 1A
(125V/F1AL)
R11 R12
ZD3
C6
470 56k
0.1uF_50V
RD5.6EB1
R13
470
3 4
Y108540-8
5
Printer Power (+7.5V)
HT1
Q1
C 2SD1415 E
GOT-4540-SPL
R2
EC1
C2 +
R5
2.2k_1/4W
0.1uF_25V
10k
100uF_16V
C3
ZD1
0.1uF_50V RD9.1EB1
HT2
Logic Power (+5.0V)
U1
TA7805S
D2
A K VI VO
Vin Vout
EC31QS06
OSH-3425A-SP
EC3
R15
C5
EC4 C4 +
R7
+
10K
10k
0.1uF_25V 100uF_16V
4700uF_25V 0.1uF_25V
GN1
GND-ONE_POINT
PF_IN
VFD Drive Power (-28V)
R10
3.3_1/4W
(3225size)
VFD Filament Power (3.9V P-P)
R14
3.3_1/4W
(3225size)
* Mark not used.
5
6 7
P_ON
+24V
(+32V)
VPRN
PG CN1
1
2
3
4
5
6
VCC
7
8
9
10
11
12
13
14
15
(Non Contact -Pin)
16
16P-SAN
-Vpw
VF1
VF2
6 7
8
D
C
B
A
8