Chroma - Orion MD17 Service Manual

A B
FROM/TO MICON
SVL_M
VCR_POWER_H
8
TV_POWER_H
HD
VD
R.OUT
G.OUT
B.OUT
TEXT_Y
SDA
SCL
AGC_M
IIC_OFF
AFT_M
SECAM_MO-H
AT+5V
7
TEST POINT
CP603
8283_0912_00_000
9 B.OUT
8 NC
7 NC
6 AFT
5 AGC
4 IIC OFF
3 SDA
0
AGC SW
2 SCL
Q609
1 GND 5.0
KRC103RTK
0
6
CD1001
CH01408A
L605
13 12 100uH 0607
AGC 1
2
3
R624 150
5
SCL 4
5
SDA
W868
6 NC
R656
W846
+5V 7
100
8
+30V 9
SECAM VL SW
Q601
10
0 2SC2412K
W863
0.7
IF 11
0.7
0
15 14
0
4
0
SECAM VL SW
R657
Q602
KRC103RTK
1K
6.2
BUFFER
C685
Q610
2.6
2SC2814
47P CH
1.9 C687
47P CH
3
R641
1K MONITOR IF
TP602
JWF-50K-1
C649 560P B
SEC_AUDIO
40
2.2 2.3
8 7 6
W942
FROM POWER
(W094)
6dB
2 AT+30V
SUPPLY
AT+5.6V
AT+5
R611_1 1K 9 10 11
P.CON+5V_A 2.3 0
NC NC
GND
P.CON+9V
L607
P.CON+5V_A
100uH 0607
1
NOTE: THIS SCHEMATIC DIAGRAM IS THE LATEST AT THE TIME
OF PRINTING AND SUBJECT TO CHANGE WITHOUT NOTICE
A B
G-9
C
CHROMA SCHEMATIC DIAGRAM
S101X S101Y
SAW FILTER
CF601
SAF38.9MAZ220Z
AFT_M
AGC_M
2 3 4 5
C675
5P CH
W939
P.CON+5V_A
R604
P.CON+9V
100 1/2W
6.2 PRE AMP
C606_1
1.3
Q603
2SC3000
100P CH
0.6
SVL_M
SIF SAW FILTER
CF602 K9453M
IN IN GND OUT OUT
D606
1 2 3 4 5
MA77 0.1 3.3 0 1.8 1.8
D605
MA77 0.1
R667
SIF SW
3.3 Q612
100K 0.7
0
2SC2814
SIF SW
0
Q611
0
2SC2814
NC NC
2.2 0.1 4.4 2.2 0.1 1.7
5 4 3 2 1
AGC CTL
AGC DET
12 13 14 15 16
4.3 3.8 0 4.8 0.1 1.7
NC NC
NOTE: THE DC VOLTAGE AT EACH PART WAS
MEASURED WITH THE DIGITAL TESTER
DURING PLAYBACK
C
D E
(SYSCON PCB)
L613
47uH 0305
R672
3.3K
R617
10K
0 4.7 6.2 2.4 0 4.8 4.8 4.8 8.7 2.6 2.6 2.6 0
1 2 3 4 5 6 7 8 9 10 11 12 13
VCXO
Y/R-Y R R R R Cut off
(4.43MHz)
Matrix SW Contrast Clamp Drive

Chroma

Y/G-y G G G G Cut off
Clamp CountDown
Matrix SW Contrast Drive
Y/B-Y B B B R Cut off
Chroma Chroma
Matrix SW Contrast Clamp Drive
VCO
Killer2
NN5198
(NTSC)
Contrast Brightness
Killer1 CW
1H
Tune
G-Y SECOM VCO (PAL) Generate
FF
Ident
Demod
Saturation
512bit Limiter Bell
Pedestal De-emph
EEPROM
Adjust
1H Delay
B-Y
R-Y
Line
B-Y 1H Killer3 Demod Demod
R-Y
Amp
IIC BUS (SECAM) +/-
Amp Amp FF
R-Y B-Y Ident
Interface
DAC/SW PN / S
SW
Power On
Reset
50/60Hz Hor. BGP SCP
Detect Count down
HVBLK
Ver. Hor.
AFC2
Count down HVCO Lock Det
Hor.
Ver. Hor.
Hor.
Sync Sep
Out AFC1 Out HBLK
Reg.
52 51 50 49 48 47 46 45 44 43 42 41 40
R673 0.5 4.7 0 0.9 4.8 5.5 3.2 1.2 4.1 3.8 1.2 6.3 2.6
NC
3.3K
R677
C601
1.5M
100P CH
C621
0.01 B
SWITCH
Q605
KRC102RTK
0 0.3
0
0 0
SWITCH
4.3
Q604
KRC102RTK
CAUTION: SINCE THESE PARTS MARKED BY ARE
CRITICAL FOR SAFETY,USE ONES
DESCRIBED IN PARTS LIST ONLY
D E
F G
R648
W919 27K
8.7
R640
0.2
R638 100K
0
BUFFER
6.8K
Q613
2SC2412K
NC NC
2.6 3.8 8.7 4.3
2.8 2.8 0 2.6 4.4 8.1 3.3 3.2 3.8
14 15 16 17 18 19 20 21 22 23 24 25 26
QS IF IF RF
Sync.Sep Amp AGC AGC
PCP
AFT
VIF VIF
SW
Detect Lock Det
Sync.
Sep.
Noise Phaso
APC
Inverter Shift
QIF
APC2
Pedestal Video VCO Amp
Amp
Clamp
QAGC
Black QDet
Tint APC
Expansion
ACC
Amp Sharpness QSS SW
Delay
ACC
Det VCXO
Trap Tune
P N S
Trap SW
Tune Pre-Amp
BPF Trap
SIF
VCO Detect
Ver.
Limiter
Sync Sop SIF fs
CV
De- Detect
CSW Clamp
emphasis
BPF
VSW Amp
ASW
BPF
SW
39 38 37 36 35 34 33 32 31 30 29 28 27
4.2 4.2 0.1 3.8 4.8 3.3 8.8 4.5 4.0 4.2 4.3 3.6 3.8
NC
NC NC
41
C694
100P
CH
D607 C663
SB140-EIC 0.012 B
42
L616
R629
120 1/2W 100uH
0607
BUFFER
0
Q4020
2SA984K 3.3
3.9
43
R650
470 1/4W
B603
R634 BF40DTA-3.5X6X1
D602 D603
0.3
330
1SS133 1SS133
CAUTION: DIGITAL TRANSISTOR
ATTENTION: LES PIECES REPAREES PAR UN ETANT
DANGEREUSES AN POINT DE VUE SECURITE
N'UTILISER QUE CELLS DECRITES
DANS LA NOMENCLATURE DES PIECES
F G
H
8
D604
11ES1N-TA1B2
7
TO SOUND AMP
SOUND+B
SOUND_GND
FROM/TO DEFLECTION
6
R652 (CP820) CD820
AGC_M
CH2B031A
150K
SOUND_GND
SOUN_GND 1
SOUND+B 2
VCR_POWER_H
VCR_POWER_H 3
TV_POWER_H
TV_POWER_H 4
C679
GND 5
0.001 B
H_OUT
H.OUT 6
VD
V.PULSE 7
V_OUT
V.OUT 8
ACL 9
HD
AFC 10
NC 11
5
L600
W5T29X7.5X19
G.OUT
R.OUT
B.OUT
TO CRT
(CP850) CD850_1
4
CH25090A
GND 5
CUT_OFF 4
G.OUT 3
R.OUT 2
B.OUT 1
SEC_AUDIO
TU_AUDIO TO Y/C/AUDIO/HEAD AMP
TU_VIDEO
TU_AUDIO
3
TO 21PIN/IN/OUT
TU_AUDIO
SOUND_GND
DEC_TUNER
CUT OFF
Q607
KTA1266-AT(Y,GR)
FROM T'TEXT
2
1.0
TEXT_B
TEXT_G
TEXT_R
0
TEXT_Y
TEXT_SYNC
PCB010
VM9171
1
H
G-10