Read Sony TAV-L1 (serv.man5) Service Manual online
11
11
2-1. Stand by mode
AC voltage
Sub power transformer
(T102)
“MAIN SYS +3.3V”
for MAIN SYSTEM CONTROLLER
(IC602)
“SUB SYS +3.3V”
for SUB SYSTEM CONTROLLER
(IC901)
POWER CONTROL
(IC121)
(1) Power supply for MAIN and SUB SYSTEM CONTROLLER
“E4V”
“IC912 +3.3V”
for LEVEL SHIFT
(IC902, IC606)
D602
D906
D905
Feedback
Control
VCC
Please refer to Block diagram on page 57 in the Service manual.
When you connect the AC plug to the outlet, AC voltage inputs to Sub Power
transformer (T102) and POWER CONTOL (IC121 8pin).
transformer (T102) and POWER CONTOL (IC121 8pin).
The operation voltage is supplied from Sub Power transformer to POWER
CONTROL (IC121 4pin) and POWER CONTROL starts operation.
CONTROL (IC121 4pin) and POWER CONTROL starts operation.
POWER CONTROL checks output voltage of Sub power transformer with
FB/OLP terminal (IC121 6pin).
FB/OLP terminal (IC121 6pin).
And, POWER CONTROL controls the output voltage of Sub power transformer
with DRAIN output (IC121 1pin).
with DRAIN output (IC121 1pin).
Then, Sub power transformer outputs constant “E4V”.
“E4V” is used for the followings.
“MAIN SYS +3.3V” is for MAIN SYSTEM CONTROLLER (IC602).
“SUB SYS +3.3V” is for SUB SYSTEM CONTROLLER (IC901).
“IC912 +3.3V” is for LEVEL SHIFT (IC912, IC606).
LEVEL SHIFT ICs are for data communication between MAIN and SUB
SYSTEM CONTROLLER. (Refer to page 55 of service manual.)
SYSTEM CONTROLLER. (Refer to page 55 of service manual.)
Click on the first or last page to see other TAV-L1 (serv.man5) service manuals if exist.