V1
V2
V3
V4
W1
W2
W3
W4
X1
X2
X3
X4
Y1
Y2
Y3
Y4
Z1
Z2
Z3
Z4
V5
W5
X5
Y5 Z5
AA5
AA4
AA3
AA2
AA1
BB5
BB4
BB3
BB2
BB1
PB Video SignalREC Video Signal
1-9-12
1-9-13 1-9-14 T7300SCM4
Main 4/4 Schematic Diagram
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.
CRT
Ref No. Position
Q501 AA-5
Q502 AA-4
Q503 AA-4
CL501A Z-5
CL504A Z-5
CN501 BB-4
CONNECTORS
TRANSISTORS
MAIN 4/4
Ref No. Position
IC551 V-5
IC601 Z-2
IC602 X-3
Q571 X-5
Q572 X-5
Q591 X-4
Q601 AA-2
Q602 AA-2
Q604 Z-2
Q605 Y-2
Q606 Y-3
Q607 X-2
Q608 W-2
Q609 X-2
Q610 X-2
Q611 W-1
Q612 W-2
J551 Y-4
J552 Y-4
CL501 Z-5
CL504 Z-5
CN571 W-5
CN601 BB-2
VR601 Z-2
ADJUSTMENT
CONNECTORS
TEST POINTS
ICS
TRANSISTORS
VOLTAGE CHART (Power off mode)
Ref. No. S D G
Q601 0.0 137.0 1.8
Ref. No. E C B
Q602 0 3.2 0.5
Q605 0 7.0 0
Q606 7.0 7.0 7.0
Q608 5.0 7.5 5.7
Q609 6.0 6.5 6.6
Q610 0.7 4.7 1.3
Q611 0 2.4 0
Q612 5.3 5.3 0.8
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
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