Power Supply Pcb - Teac A-6100MKII Service Manual

. POWER SUPPLY PCB
-1 SOLENOID DRIVE CIRCUIT (SURGE TYPE)
xe Fig. 12
CAPSTAN [
SOLENOID
BRAKE
CONTROL PCB
T-1248
Dv =) FF Low
Q722C€
uu
+2ev
Fig. 12 Solenoid Drive Circuit
2 RELAY CIRCUIT ————
SOVAC 'amma Ki-2
Larce SY TP TT)
SMALL 9
6SVAC
|
|
ot
|
|
|
|
ov
plated, when Q1, and then Q2 go OFF, + 11 V will be applied
to the Brake Solenoid via route 4. Once the solenoid is
energized it can be held energized by a low voltage. By
using a lower voltage the amount of heat generated can be
held down.
Also, for Play mode, since the Brake Solenoid and the
Capstan Solenoid will be energized at the same time, the
Capstan Solenoid will also use this drive circuit. '
RIGHT REEL MOTOR
K2
al
Ki: Ol
K2~K4: OFF
Fig. 13 Reiay Circuit
(1) PLAY MODE
Fig. 13 shows Play Relay in its energized condition. (Reel
Size switch is set to LARGE)
For normal operation current is supplied to the reel right
reel motor (take-up) along route 1. R9 is the fine adjust-
ment resistor for take-up torque.
33