Sylvania SRT2227S, Руководство по обслуживанию

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H1
H2
H3
H4
H5
I1
I2
I3
I4
I5
J1
J2
J3
J4
J5
K1
K2
K3
K4
K5
L1
L2
L3
L4
L5
M1
M2
M3
M4
M5
N1
N2
N3
N4
N5
VIDEO SIGNAL
Main 2/3 & CRT Schematic Diagram
7-6 L6200SCM2
NOTE :
The voltage for parts in hot circuit is measured using
hot GND as a common terminal.
CAUTION !
Fixed voltage power supply circuit is used in this unit.
If Main Fuse (F601) is blown, check to see that all components in the power supply
circuit are not defective before you connect the AC plug to the AC power supply.
Otherwise it may cause some components in the power supply circuit to fail.
BECAUSE A HOT CHASSIS GROUND IS PRESENT IN THE POWER
SUPPLY CIRCUIT, AN ISOLATION TRANSFORMER MUST BE USED.
ALSO, IN ORDER TO HAVE THE ABILITY TO INCREASE THE INPUT
SLOWLY, WHEN TROUBLESHOOTING THIS TYPE POWER SUPPLY
CIRCUIT, A VARIABLE ISOLATION TRANSFORMER IS REQUIRED.
7-7 7-8
MAIN 2/3
Ref No. Position
IC551 H-5
IC601 K-2
Q531 H-4
Q551 J-5
Q552 J-4
Q561 K-4
Q571 K-4
Q572 J-4
Q601 L-2
Q602 L-2
Q662 K-2
Q671 I-2
Q675 J-1
Q676 I-1
Q681 H-2
Q682 H-1
Q683 H-1
Q696 K-1
TP302 K-4
TP591 J-4
TP592 K-4
TP601 K-4
CN571 I-5
CN691 M-2
WH301A L-4
WH501A L-4
VR561 J-5
VR562 J-5
VR661 J-1
VARIABLE RESISTORS
ICS
TRANSISTORS
TEST POINTS
CONNECTORS
* 1 NOTE:
The Capacitor ( C643 ) is either type A or type B.
These two types are exchangeable and can be equally used
whichever the model is . The difference between type A and
type B is shown in the table below.
Type A
Type B 4700P/250V
0.01/250V
0.01/250V
Not Used
C643 C642 JS642
Not Used
WIRE
CAUTION
FOR CONTINUED PROTECTION AGAINST FIRE HAZARD,
REPLACE ONLY WITH THE SAME TYPE FUSE.
ATTENTION : POUR UNE PROTECTION CONTINUE LES RISQES
D'INCELE N'UTILISER QUE DES FUSIBLE DE MEMO TYPE.
RISK OF FIRE-REPLACE FUSE AS MARKED.
"This symbol means fast operating fuse."
"Ce symbole reprèsente un fusible à fusion rapide."
4A/125V
CRT
Ref No. Position
Q1512 M-4
Q1522 M-4
Q1532 M-4
TP1501 M-4
TP1502 M-4
CN1501 M-4
WH301B L-4
WH501B L-5
TRANSISTORS
CONNECTORS
TEST POINTS