Power On Block (Ha-3 Chassis); Power Supplies - Sony KD-34XBR2 Training Manual

Power Supplies

There are four power supplies in the HA-3 direct view TV chassis. These are listed in Chart 5-1 below:
Chart 5-1 - Model KD32XBR2 – HA-3 Chassis Internal Power Supplies
Name
Standby
Primary
Secondary
HV Converter
(not shown)
F BD.
F6701
STBY P.S.
6.3A
T6703
D6702
D6709/
CN6502
1 2
CN6709/
CN6501
D BD.
Except for the Standby power supply, the Primary, Secondary and HV Converter supplies are similar. The last
three supplies use the same IC in a similar configuration. They differ in how they are turned ON and their output
voltages.
HA-3 Chassis - Power ON Block
Board Start
F AC Plug in
A Power ON (Voltage
from AC Relay
RY6501)
D Primary Pre 15V,
Main Relay (5V)
D Horiz Output AFC-
PLS (5Vp-p)
* see Chart 5-4 for the destination of output voltages
STBY 7V
SOURCE
5
D2007
7
D2008
S01
FRONT PANEL
PWR (HA BD.)
1
CN7003/
RY6501
AC
RELAY
D6730
R6526
FIGURE 5-1 - POWER ON 1/2
5V for Main Micro
7V & 15V for power relay
Unreg 11V, 7V, 5V become
regulated 9V, 5V, 3.3V.
+200V for HV stage, +135V
for H. Output, +15V, +24V
for Audio stage *
31.5kV HV for CRT, Focus
voltage.
A BD.
IC6002
REG
STBY
+15V
SOURCE
Q2006
+
CN3170/
C2039
CN6503
3 1
SET
CN6503
ON
Q6527
PROT.
LATCH
Q6530
Q6532
R5002
PRIM P.S
(A BD.)
SEC P.S
(D BD.)
12
5. HA-3 Chassis - Power ON Block
Purpose
CN3171/
CN6506
STBY +5V STBY +5V
C28
AC
RELAY
C26
A25
OVP
C25
OCP
7 8
CN3171/
CN6506
B+
OVP
D6537
200V
OCP
D6501
B+ OCP
IC003
RESET
32
69
IC001
44 MAIN MICRO
M306V2MF
45
50 46
Q522
P.ON
(HA BD.)
TO STBY
LED
B BD.
12TVP12 1330 8/30/01