Secam Chroma/Hi-Fi - Orion MD17 Service Manual

A B
8
FROM/TO MICON
SEC_REC_L
7
SECAM_L
SECAM_SW
D_V_SYNC
SCL
SDA
6
5
4
FROM POWER
P.CON+5V_B
GND
3
2
1
A B
G-15
C
SECAM CHROMA/HI-FI SCHEMATIC DIAGRAM
45
BUFFER
Q3001
2.1
2.5
2SC2412K
R3012
2.7 0
3.1
1K 4.7
BUFFER
Q3005
2SA1037AK
SECAM SW
Q3003
0 KRC103RTK
0
R1153 3.1
560
44
NC
2.6 1.6 2.6 2.6 0 1.7 2.7 4.7 3.3 1.9 1.5 3.2
24 23 22 21 20 19 18 17 16 15 14 13
DET
SW6 SW
ATT1
ACC
BPF DET
SYSTEM
SW3 PB
ACC compress
BPF
4.3M
sync
ACC 1.1M
1st
1/3
1/4
Gate
SYNC
Gate Antl BELL
BELL
SYNC ACC
4.3/1.1
REC SW4 ATT2
4.3/1.1
2nd
SECAM SW7
Align
MU SW5
Ajign BPF
Auto
Auto X2 X2
2.2
Pin 14
PD
Align
V C/D H C/D
VCO
Auto
XVCO C/D V SEP VCO
DET Align
4.286M 1/4
AFC
IIC BUS slicer
ID Auto
1 2 3 4 5 6 7 8 9 10 11 12
1.8 2.4 3.0 3.8 4.7 1.5 1.6 0 0.7 1.6 3.3 1.9
4.7
SECAM REC SW
Q3002
0
2SC2412K
0.9
SECAM REC SW
0
Q3004
5.0
KRC103RTK
0
46
NOTE: THIS SCHEMATIC DIAGRAM IS THE LATEST AT THE TIME
OF PRINTING AND SUBJECT TO CHANGE WITHOUT NOTICE
C
D E
(SYSCON PCB)
W934
NC
NOTE: THE DC VOLTAGE AT EACH PART WAS
MEASURED WITH THE DIGITAL TESTER
DURING PLAYBACK
D E
F G
CAUTION: DIGITAL TRANSISTOR
F G
H
8
7
FROM/TO Y/C/AUDIO/HEAD AMP
LOW_C2
EE/VV
SEC_PB_C
LOW_C
V.SYNC
6
SECAM_SW
GND
5
4
3
2
PCB010
VM9171
1
H
G-16