Service manual

1-7-6
Power Supply Block Diagram
T5553BLP
6 4 2 1
12 11
10
9
7 8
LINE FILTER
BRIDGE RECTIFIER
T601
IC601
ERROR VOLTAGE DET
W601
F601 4A/125V
L601
D603 - D606
SWITCHING
Q604
VR601
DEGAUSSING COIL
CN601
Q601
+B ADJ.
FEED BACK
LIMITER
Q602
PS601
4 1 3 2
HOT COLD
Q606
Q605
Q607
DG601
AL+33V P-ON+5V
MAIN CBA
NOTE : The voltage for parts in hot circuit is measured using hot GND as a common terminal.
4A/125V
TIMER+5V
P-DOWN (TO PIN84 OF IC201)
P-ON-ON
P-ON+5V P-ON+5V P-ON+8V
AL+12V P-ON+12V
AL+5V
P-ON-H (TO PIN31 OF IC201)
+5V REG.
+5V REG.
+5V REG. +5V REG.
+8V REG.
IC602 Q608
Q611 Q610
Q609
Q612
+5.7V REGULATOR
IC301
3027
+B DEF+B
HOT CIRCUIT. BE CAREFUL.
FOR CONTINUED PROTECTION AGAINST RISK OF FIRE, REPLACE ONLY WITH SAME TYPE 4 A, 125V FUSE.
CAUTION: ATTENTION: UTILISER UN FUSIBLE DE RECHANGE DE MÊME TYPE DE 4A, 125V.
4A/125V
C
AUTION !
F
ixed voltage ( or Auto voltage selectable ) power supply circuit is used in this unit.
I
f Main Fuse (F601) is blown, check to see that all components in the power supply
c
ircuit are not defective before you connect the AC plug to the AC power supply.
O
therwise it may cause some components in the power supply circuit to fail.
+5V REG.
Q613
P-ON+5V