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Note
Note:
:
(1)
(1)
When perf
Whe
screwdrivers or TV alignment tools.
screwdrivers or TV alignment tools.
(2)
(2)
Before performing adjustments, the TV set must
Before performing adjustments, the TV set must
CIRCUIT PROTECTION
CIRCUIT PROTECTION
The receiver is protected by a 5.0A
The receiver is protected by a 5.0A
mounted on PWB-G, wired into one side of the AC
mounted on PWB-G, wired into one side of the AC
line input.
line input.
X-RADIATION PROTECTOR CIRCUIT TEST
X-RADIATION PROTECTOR CIRCUIT TEST
After service has been performed on the horizontal
After service has been performed on the horizontal
deflection system, high voltage system, B+ system,
deflection system, high voltage system, B+ system,
test the X-Radiation protection circuit to
test the X-Radiation protection circuit to
proper operation as follows:
proper operation as follows:
1.
1.
Apply
Apply 1
110~22
10~220V AC usin
accurate input voltage.
accurate input voltage.
2.
2.
Allow for
Allow for
for normal picture and sound.
for normal picture and sound.
3.
3.
Receiv
Rec
eive a good lo
e a good
4.
4.
Connect
Connect
a digital
a digital
make sure that the voltmeter reads 13.85
make sure that the voltmeter reads 13.85
5.
5.
Apply ex
Apply
externa
external DC supply, TV must be
external DC supply, TV must be
6.
6.
T
T
o reset the p
o reset the
the AC cord power on. Now make sure that normal
the AC cord power on. Now make sure that normal
picture appears on the screen.
picture appears on the screen.
7.
7.
If the o
If the
operation o
peration
stop in step 5, the circuit must be repaired before the
stop in step 5, the circuit must be repaired before the
set is returned to the
set is returned to the
INSTALLATION AND SERVICE INSTRUCTIONS
INSTALLATION AND SERVICE INSTRUCTIONS
n
perform
orming any a
ing any
adjus
djustme
0V AC
using a variac trans
g a variac
warm up
warm up
and adjust
and adjust
all
all custom
customer contr
local ch
cal
chann
annel.
el.
voltme
voltmeter to
ter to
TP653
TP653 (P
ternal 17.3V DC at T
l 17.3V DC at
TP653 by us
P653 by
shut off.
shut off.
protect
rotector or, unplug the
, unplug the
AC cord and plug
AC cord and plug
of the hor
f the
horizontal os
izontal
oscillator do
cillator
customer.
customer.
tments to r
nts to
resis
esistor co
tor
contr
ntrols an
be on at least 15
be on at least 15
HIGH
HIGH
fuse (F1701),
fuse (F1701),
High voltage is not
High voltage is not
to verify that the receiver is operating within safe
to verify that the receiver is operating within safe
and efficient design limitations as specified checks
and efficient design limitations as specified checks
should be as follows:
should be as follows:
1.
1.
Connect
Connect
ground and anode of picture tube.
ground and anode of picture tube.
2.
2.
Operate r
Operate
ascertain
ascertain
AC line voltage, with a
AC line voltage, with a
tuned in test signal.
tuned in test signal.
3.
3.
Enter t
Enter
transform
former for
er for
adjustment "V11" and Bus data
adjustment "V11" and Bus data
Cut Off).
Cut Off).
er
controls
ols
4.
4.
The
The volt
If a correct reading cannot be obtained, check circuitry
If a correct reading cannot be obtained, check circuitry
for malfunctioning components.
for malfunctioning components.
(P651 Pin3)
651 Pin3)
and
and
make Y-mute off to the normal mode.
make Y-mute off to the normal mode.
0.6V DC.
0.6V DC.
±
±
using an
ing an
does not
es not
5
5
ols
and tran
d
transfo
sforme
rmers use
rs use
minutes.
minutes.
VOL
VOLT
T
AGE
AGE CH
CHECK
ECK
adjustable but must be checked
adjustable but must be checked
an
an accur
accurate high
ate high
voltage
voltage
receiver f
eceiver
for at leas
or at
least 15 minu
t 15
strong air signal or a properly
strong air signal or a properly
the service
he service
mode and
mode and
voltage sho
age
should be belo
uld be
below 31.5k
w
31.5kV (at zero be
29FL94
29FL94
non-met
non-
metalli
allic
c
meter b
meter
between
etween
minutes at 1
tes at
110~220V
10~220V
select t
select
the servic
he
service
e
"01" (Y-mute on, CRT
"01" (Y-mute on, CRT
V (at zero
beam).
am).
After the voltage tes
After the voltage
test,
t,
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