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  9. Sony TRINITRON PVM-8020 User manual

Sony TRINITRON PVM-8020 User manual

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SERVICE
MANUAL
March,
1985
SPECIFICATIONS
NTSC
system’
Microblack
Trinitron
tube
8-inch
picture
measured
diagonally,
70-degree
deflection
Resolution
230
TV
lines
(B/W)
Color
temperature
9300°
K
Frequency
response
Color
system
Inputs
Picture
tube
4
MHz
(-3
dB)
Horizontal
linearity
+8%
Outputs
Vertical
linearity
+8%
Line
pull
range
Horizontal
+
500
Hz
Vertical
8
Hz
Overscan
of
the
picture
6%
Underscan
of
the
picture
5%
H/V
delay
Horizontal:
Approx.
1/4
line
Vertical:
Approx.
1/2
line
Return
loss
5
MHz,
—30
dB
(INPUT
A,
INPUT
B)
Zooming
Within
3
%
Convergence
Central
area
0.5
mm
Periphery
0.7
mm-
Brightness
More
than
50
foot-lamberts
MICROFILM
US
Model
Chassis
No.
SCC-629A-A
A
VIDEO
IN
(INPUT
A):
BNC
connector
VIDEO
(INPUT
B):
BNC
connector.
Composite
1V
p-p
+
6
dB,
75
ohms,
unbalanced,
sync
negative
AUDIO
IN
(INPUT
A):
minijack
AUDIO
(INPUT
B):
minijack
~—5
dBs,
47
k
ohms
or
more
VIDEO
OUT
(INPUT
A):
BNC
connector
VIDEO
(INPUT
B):
BNC
connector
1
V
p-p,
75
ohms,
unbalanced,
sync
negative
AUDIO
OUT
(INPUT
A):
minijack
AUDIO
(INPUT
B):
minijack
Output
level
0.8
W
TUNER
connector
6-pin
DIN
connector
Pin
No.
1:
not
in
use
Pin
No.
2:
video
input,
composite
1
V
p-p
+
6
dB,
75
ohms,
unbalanced,
sync
negative
Pin
No.
3:
ground
Pin
No.
4:
audio
input,
—5
dBs,
47
k
ohms
or
more
Pin
No.
5:
power
output
Pin
No.
6:
not
in
use
TRINITRON®
COLOR
VIDEO
MONITOR
SONY.
PVM-8020
VF-501
Power
requirements
.
120
V
ac,
50/60
Hz
12
V
de,
with
the
optional
Sony
NP-1
battery
pack
or
12
V
car
bat-
tery
using
the
optional
DCC-16AW
car
battery
cord
Power
consumption
47
W
ac,
max.
38
W
dc,
max.
Dimensions
(115/s
inches)
232mm
(94/4
inches)
293mm
(17/4
inches)
~
(942
inches)
Weight
Approx.
7.2
kg
(15
Ib
14
oz)
not
incl.
accessories
Accessories
supplied
AC
power
cord
(1)
Hood
(1)
Design
and
specifications
subject
to
change
without
notice.
OPTIONAL
ACCESSORIES
-
TV
tuner
unit
TU-1110
Battery
pack
NP-1
Car
battery
cord
DCC-16AW
POTS
PVM-8020
VE-501
Section
Title
Page
Section
Title
Page
1.
GENERAL
5.
DIAGRAMS
j-1.
Features
ec
eds
cis.
jee
helaa
dhs
LS
Se
faved
5
5-1.
Circuit
Boards
Location
..................
30
1-2.
Precautions
.........00
0.
ce
cece
ee
ence
eee
5
5-2.
Block
Diagram
.............200¢s-
ceacte’
31
1-3,
Location
and
Function
of
Controls
.......
6
5-3.
Schematic
Diagrams
.................00-5
35
1-4.
Power
SOUICES
......
6.
cee
eee
eee
eee
10
5-4,
Semiconductors
........
0.00
e
eee
ee
eee
eee
42
1-5.
System
Connections
...........+-.-..005-
11
5-5.
Printed
Wiring
Boards
...............-+4.
43.
1-6,
Use
of
the
Stand
.............
2c
eee
eee
12
6.
EXPLODED
VIEWS
1-7.
Attaching
the
Supplied
Hood.............
12
6-1.
Bezel,
Cabinet
Ass’y
..........0-..00e
eee
50
2.
DISASSEMBLY
6-2.
Cabinet
Bottom
ASs’y
...........0.ce
cence
51
2-1.
Cabinet
Removal
.............
00.
ee
eens
13
6-3.
ChassisvASS
yoo
ate
ta
sied
Saat
eee
oe
52
2-2.
Bezel
Removal
(HA,
HB,
X
Board)
.......
13
7.
ELECTRICAL
PARTS
LIST
................0408
53
2-3.
Cabinet
Bottom
Removal.................
14
2-4.
DA
Board
Removal
.............e0
eee
eee
15
2-5.
BA,
BB
Board
Removal
............-.0045
15
2-6.
CRT
Removal
............
2
cece
eee
ees
16
3.
SET-UP
ADJUSTMENT
3-1.
Beam
Landing............
02.
e
eee
eee
17
3-2.
Focus
Adjustment............6
cece
ee
eee
17
3-3,
CONVETZENCE
00...
cece
eet
eee
ences
18
3-4,
White
Balance
.........6..
ee
ce
sence
eee
e
ee
19
4.
CIRCUIT
ADJUSTMENT
41.
BA
Board
Adjustments
..............-0065
20
4-2.
Safety
Related
Adjustments...............
23
4-3.
DA
Board
Adjustments
............--.05-
24
44.
BB
Board
Adjustments
.................5.
27
4-5,
HA
Board
Adjustments
............--+++5
28
WARNING
!!
AN
ISOLATION
TRANSFORMER
SHOULD
BE
USED
DURING
ANY
SERVICE
TO
AVOID
POSSIBLE
SHOCK
HAZARD,
BECAUSE
OF
LIVE
CHASSIS.
;
THE
CHASSIS
OF
THIS
RECEIVER
IS
DIRECTLY
CON-
NECTED
TO
THE
AC
POWER
LINE.
SAFETY-RELATED
COMPONENT
WARNING
!!
COMPONENTS
IDENTIFIED
BY
SHADING
AND
MARK
ON
THE
SCHEMATIC
DIAGRAMS,
EXPLODED
VIEWS
AND
IN
THE
PARTS
LIST
ARE
CRITICAL
TO
SAFE
OPERATION.
REPLACE
THESE
COMPONENTS
WITH
SONY
PARTS
WHOSE
PART
NUMBERS
APPEAR
AS
SHOWN
IN
THIS
MANUAL
OR
!N
SUPPLEMENTS
PUBLISHED
BY
SONY.
CIRCUIT
ADJUSTMENTS
THAT
ARE
CRITICAL
TO
SAFE
OPERATION
ARE
IDENTIFIED
IN
THIS
MANUAL.
FOLLOW
THESE
PRO-
CEDURES
WHENEVER
CRITICAL
COMPONENTS
ARE
REPLACED
OR
IMPROPER
OPERATION
IS
SUSPECTED.
*VM-8020
F-501
SAFETY
CHECK-OUT
After
correcting
the
original
service
problem,
perform
the
following
safety
checks
before
releasing
the
set
to
the
customer:
1.
Check
the
area
of
your
repair
for
unsoldered
or
poorly-soldered
connections.
Check
the
entire
board
surface
for
solder
splashes
and
bridges.
2.
Check
the
interboard
wiring
to
ensure
that
no
wires
are
‘“‘pinched”
or
contact
high-wattage
resistors.
3.
Check
that
all
control
knobs,
shields,
covers,
ground
straps,
and
mounting
hardware
have
been
replaced.
Be
absolutely
certain
that
you
have
replaced
all
the
insulators.
4.
Look
for
unauthorized
replacement
parts,
par-
ticularly
transistors,
that
were
installed
during
a
previous
repair.
Point
them
out
to
the
customer
and
recommend
their
replacement.
5.
Look
for
parts
which,
though
functioning,
show
obvious
signs
of
deterioration.
Point
them
out
to
the
customer
and
recommend
their
replace-
ment.
6.
Check
the
line
cord
for
cracks
and
abrasion.
Recommend
the
replacement
of
any
such
line
cord
to
the
customer.
7.
Check
the
condition
of
the
monopole
antenna
(if
any).
Make
sure
the
end
is
not
broken
off,
and
has
the
plastic
cap
on
it.
Point
out
the
danger
of
impalement
on
a
broken
antenna
to
the
customer,
and
recommend
the
antenna’s
replacement.
8.
Check
the
B+
and
HV
to
see
they
are
at
the
values
specified.
Make
sure
your
instruments
are
accurate;
be
suspicious
of
your
HV
meter
if
sets
always
have
low
HV.
9.
Check
the
antenna
terminals,
metal
trim,
“metallized”
knobs,
screws,
and
all
other
exposed
metal
parts
for
AC
leakage.
Check
leakage
as
described
below.
To
Exposed
Metal
Parts
on
Set
AC
voltmeter
|
|
{0.75
V)
0.15
uF
=
Earth
Ground
Using
an
AC
voltmeter
to
check
AC
leakage.
—4—
LEAKAGE
TEST
The
AC
leakage
from
any
exposed
metal
part
to
earth
ground
and
from
all
exposed
metal
parts
to
any
exposed
metal
part
having
a
return
to
chassis,
must
not
exceed
0.5mA
(500
microampers).
Leakage
current
can
be
measured
by
any
one
of
three
methods.
1.
A
commercial
leakage
tester,
such
as
the
Simpson
229
or
RCA
WT-540A.
Follow
the
manufacturers’
instructions
to
use
these
instru+
ments.
2.
<A
battery-operated
AC
milliammeter.
The
Data
Precision
245
digital
multimeter
is
suitable
for
this
job.
3.
Measuring
the
voltage
drop
across
a
resistor
by
means
of
a
VOM
or
battery-operated
AC
volt-
meter.
The
“limit”
indication
is
0.75
V,
so
analog
meters
must
have
an
accurate
low-
voltage
scale.
The
Simpson
250
and
Sanwa
SH-63Trd
are
examples
of
a
passive
VOM
that
is
suitable.
Nearly
all
battery
operated
digital
multimeters
that
have
a
2V
AC
range
are
suitable.
(See
Fig.
A)
HOW
TO
FIND
A
GOOD
EARTH
GROUND
A
cold-water
pipe
is
guaranteed
earth
ground;
the
cover-plate
retaining
screw
on
most
AC
outlet
boxes
is
also
at
earth
ground.
If
the
retaining
screw
is
to
be
used
as
your
earth-ground,
verify
that
it
is
at
ground
by
measuring
the
resistance
between
it
and
a
cold-
water
pipe
with
an
ohmmeter.
The
reading
should
be
zero
ohms.
If
a
cold-water
pipe
is
not
accessible,
connect
a
60—100
watts
trouble
light
(not
a
neon
lamp)
between
the
hot
side
of
the
receptacle
and
the
retaining
screw.
Try
both
slots,
if
necessary,
to
locate
the
hot
side
of
the
line,
the
lamp
should
light
at
normal
brilliance
if
the
screw
is
at
ground
potential.
(See
Fig.
B)
Trouble
Light
-
Ohmmeter
=
AC
Outlet
Box
N
Cold-water
Pipe
Fig.
B.
Checking
for
earth
ground.
PVM-8020
VF-501
SECTION
1
GENERAL
1-1.
FEATURES
Microblack™
Trinitron®
picture
tube
The
Microblack
Trinitron
picture
tube
gives
a
high
resolution,
high
contrast
picture.
Push-to-lock
controls
In
the
locked
position,
the
controls
are
protected
from
damage
during
carriage
of
the
unit.
The
protruding
posi-
tion
allows
easier
operation.
Monitor
of
sync
signals
The
HV-DELAY
switch
allows
horizontal
and
vertical
sync
signals
to
be
displayed
on
the
screen.
Blue
only
picture
By
using
the
B-ONLY
switch,
the
picture
can
be
displayed
in
blue
and
black
only,
facilitating
hue
adjust-
ment
or
observation
of
VTR
noise.
Underscan
mode
The
signal
normally
scanned
outside
of
the
screen
can
be
monitored
in
the
underscan
mode.
6-pin
DIN
tuner
connector
The
TUNER
connector
allows
easy
connection
of
a
TV
tuner,
which
is
equipped
with
the
6-pin
DIN
connector,
using
a
single
cable.
Three
power
sources
The
monitor
can
operate
on
either
house
current,
a
rechargeable
battery
or
a
12
V
car
battery,
allowing
use
indoors
or
outdoors.
The
battery
charge
function
is
incorporated.
1-2.
PRECAUTIONS
On
safety
@
Operate
the
unit
only
on
120
V
ac
or
12
V
dc.
For
ac
operation,
use
only
the
supplied
ac
power
cord.
Do
not
use
any
other
type.
For
battery
operation,
use
only
the
optional
NP-1
battery
pack.
Do
not
use
any
other
batteries.
For
car
battery
operation,
use
only
the
optional
DGC-16AW
car
battery
cord.
Do
not
use
any
other
car
battery
cord.
@
Should
any
liquid
or
solid
object
fall
into
the
cabinet,
unplug
the
unit
and
have
it
checked
by
qualified
person-
nel
before
operating
it
any
further.
@
Unplug
the
unit
from
the
wall
outlet
if it
is
not
to
be
used
for
several
days.
@To
disconnect
the
ac
power
cord,
pull
it
out
by
the
plug.
Never
pull
the
cord
itself.
On
installation
:
@
Allow
adequate
air
circulation
to
prevent
internal
heat
build-up.
Do
not
place
the
Unit
on
surfaces
(rugs,
blankets,
etc.)
or
near
materials
(curtains,
draperies)
that
may
block
the
ventilation
holes.
@
Do
not
install
the
unit
in
a
location
near
heat
sources
such
as
radiators
or
air
ducts,
or
in
a
place
subject
to
direct
sunlight,
excessive
dust,
mechanical
vibration
or
shock.
On
cleaning
To
keep
the
unit
looking
brand-new,
periodically
clean
it
with
a
soft
cloth.
Stubborn
stains
may
be
removed
with
a
cloth
lightly
dampened
with
a
mild
detergent
solution.
Never
use
strong
solvents
such
as
thinner
or
benzine,
or
abrasive
cleansers
since
these
will
damage
the
cabinet.
As
a
safety
precaution,
unplug
the
unit
before
cleaning
it.
On
repacking
Do
not
throw
away
the
carton
and
packing
materials.
They
make
an
ideal
container
in
which
to
transport
the
unit.
When
shipping
the
unit
to
another
location,
repack
it
as
illustrated
on
the
carton.
If
you
have
any
questions
about
this
unit,
contact
your
authorized
Sony
dealer.
2»VM-8020
'F-501
1-3.
LOCATION
AND
FUNCTION
OF
CONTROLS
FRONT
PANEL
oe
Carrying
handle
CHARGE
indicator
®
INPUT
select
switch
@
B-ONLY
switch
@
POWER
switch
HV-DELAY
switch
BATT
indicator
V
HOLD
control
VOL
control
SHARP
control
PICTURE
control
HUE
control
BRIGHT
control
COLOR
control
@
Carrying
handle
@
POWER
switch
To
turn
the
monitor
on,
depress
the
POWER
switch
(ON).
To
turn
it
off,
press
the
switch
again
(OFF).
©
BATT
(power/battery)
indicator
This
indicator
lights
when
the
power
is
turned
on.
When
the
rechargeable
battery
becomes
weak,
the
indicator
flashes
for
about
five
minutes.
Then
it
goes
out,
and
the
power
is
automatically
turned
off.
©
VOL
(volume)
control
.
Turn
this
control
clockwise
or
counterclockwise
to
ob-
tain
the
desired
volume.
@
PICTURE
control
Adjusts
the
contrast,
intensity
and
brightness
simul-
taneously
in
the
proper
ratio.
@
BRIGHT
(brightness)
control
Adjusts
the
brightness.
Normally
set
this
control
at
the
center
detent
position.
@
COLOR
control
Adjusts
the
color
intensity
of
the
picture.
Clockwise
rotation
makes
the
picture
more
vivid;
counterclockwise.
rotation
makes
it
paler.
©
HUE
control
Use
to
obtain
the
most
natura!
skin
tones.
Clockwise
rotation
makes
the
skin
tones
more
greenish;
counterclockwise
rotation
makes
them
more
purplish.
©
SHARP
(sharpness)
control
Adjusts
the
sharpness
of
the
picture.
Clockwise
rota-
tion
makes
the
picture
sharper;
counterclockwise
rota-
tion
makes
it
softer.
@
V
HOLD
(vertical
hold)
control
If
the
picture
rolls
vertically,
correct
it
with
this
control.
Before
turning
one
of
the
controls
@
to
@,
for
easier
operation
press
on
it
to
release
the
control
to
a
pro-
truding
position.
@
HV-DELAY
switch
Normally
keep
this.
switch
released
(NORM).
To
monitor
the
sync
signals,
depress
the
switch
(oH/V).
The
picture
is
shifted
horizontally
and
vertically.
The
horizontal
sync
is
displayed
in
left
approximately
one
quarter
of
the
screen
and
the
vertical
sync
is
displayed
near
the
center
of
the
screen.
®
B-ONLY
(blue only)
switch
Normally
keep
this
switch
released
(GNORM).
Depress
the
switch
(2
BLUE)
to
turn
off
the
red
and
green
beams.
The
picture
will
be
displayed
in
blue
and
black
only.
This
facilitates
hue
adjustment
or
observation
of
VTR
noise.
PVM-8020
VF-501
@®
SCAN
mode
select
switch
Keep
this
switch
released
(NORM)
for
normal.
scan-
ning.
Depress
the
switch
(aUNDER)
to
reduce
the
display
size
by
about
5%
(underscanning
mode)
and
to
view
a
picture
which
does
not
appear
in
normal
scanning.
@®
INPUT
select
switch
Keep
this
switch
released
(1A)
to
monitor
the
signal
from
the
INPUT
A
connectors.
Depress
the
switch
(8)
to
monitor
the
signal
from
the
INPUT
B
connectors.
®
CHARGE
indicator
Lights
during
charging.
When
charging
is
compliers
the
indicator
goes
out.
»VM-8020
‘F-501
REAR
PANEL
INPUT
B
21)
VIDEO
input/output
connector
INPUT
A
—)
750
termination
switch
VIDEO
IN
connector
G
&)
AUDIO
input/output
connector
750
termination
switch
@
TUNER
connector
VIDEO
OUT
connector
3
€
RIGIB
BKG
controls
AUDIO
IN
connector
€
RIGIB
DRIVE
conitrols
AUDIO
OUT
connector
@)
531)
EXT
BATTERY
DG
IN
12V
jack
1)
OPERATE/CHARGE
select
switch
AC
IN
socket
EJECT
buttons
Battery
compartments
@
INPUT
A
To
monitor
the
input
signals
connected
to
these
con-
nectors,
keep
the
INPUT
select
switch
released
(GA).
@®
VIDEO
IN
connector
(BNC
type)
Connect
to
the
video
output
of
video
equipment,
such
as
a
VTR
or
acolor
video
camera.
@®
750
termination
switch
When
only
the
VIDEO
IN
connector
is
used
(the
VIDEO
OUT
connector
is
not
used),
set
this
switch
to
ON.
When
both
the
VIDEO
IN
and
VIDEO
OUT
connectors
are
used
together
for
a
loop-through
connection,
set
the
switch
to
OFF.
@®
VIDEO
OUT
connector
(BNC
type)
Loop-through
output
of
the
VIDEO
IN
connector.
Con-
nect
to
the
video
input
of
a
VTR
or
another
monitor.
@®
AUDIO
IN
connector
(minijack)
Connect
to
the
audio
output
of
a
VTR
or
to
a
micro-
phone
(through
a
suitable:
microphone
amplifier).
@
AUDIO
OUT
connector
(minijack)
Loop-through
output
of
the
AUDIO
IN
connector.
Con-
nect
to
the
audio
input
of
a
VTR
or
another
monitor.
INPUT
B
To
monitor
the
input
signals
to
these
connectors,
depress
the
INPUT
select
switch
(=B).
@
VIDEO
input/output
connector
(BNC
type)
Connect
to
the
video
output
of
a
VTR
or
a
color
video
camera.
When
a
TV
tuner
is
connected
to
the
TUNER
connector
and
the
75Q
termination
switch
@
is
set
to
OFF,
this
connector
can-be
used
as
a
loop-through
output
of
the
TUNER
connector.
Connect
to
the
video
input
of
a
VTR
or
another
monitor.
:
@
750
termination
switch
Normally
set
this
switch
to
ON.
When
both
the
TUNER
and
VIDEO
connectors
are
used
together
for
a
loop-
through
connection,
set
the
switch
to
OFF.
@
AUDIO
input/output
connector
(minijack)
Connect
to
the
audio
output
of
a
VTR
or
to
a
micro-
phone
(through
a
suitable
microphone
amplifier).
When
a
TV
tuner
is
connected
to
the
TUNER
connector
and
the
752
termination
switch
@
is
set
to
OFF,
this
connector-can
be
used.as
a
loop-through
output
of
the
TUNER
connector.
Connect
to
the
audio
input
of
a
VTR
or
another
monitor.
@
TUNER
connector
(6-pin
DIN)
Connect
to
the
6-pin
DIN
connector
of
a
TV
tuner.
The
video
and
audio
signals
are
supplied
to
the
monitor
and
the
power
from
the
monitor
is
fed
to
the
tuner
using
a
single
cable.
PVM-8020
VF-501
Note
The
TUNER
input
and
the
VIDEO/AUDIO
inputs
@,
®
cannot
be
used
simultaneously.
When
connecting
a
TV
tuner
to
the
monitor,
be
sure
to
disconnect
any
input.
source
equipment
from
the
VIDEO
and
AUDIO
connec-
tors,
or
vice
versa.
@®
R/G/B
BKG
(background)
controls
Used
for
adjusting
the
white
balance
of
the
background.
@
RIG/B
DRIVE
controls
Used
for
adjusting
the
white
balance
at
the
white
peak.
@
AC
IN
socket
Connect
the
supplied
ac
power
cord.
@
Battery
compartments
Insert
the
NP-1
battery
pack.
@
EJECT
buttons
Press
the
EJECT
button
upwards
to
remove
the
battery
pack.
—
@
OPERATE/CHARGE
select
switch
Normally
set
this
switch
to
OPERATE.
To
charge
the
battery
pack,
set
to
CHARGE.
The
CHARGE
indicator
on
the
front
panel
lights.
When
charging
is
complete,
the
CHARGE
indicator
goes
out;
reset
the
switch
to
OPERATE.
@
EXT
BATTERY
(external
battery)
DC
IN
12
V
jack
Connect
the
optional
DCC-16AW
car
battery
cord.
2VM-8020
1-4.
POWER
SOURCES
HOUSE
CURRENT
Connect
the
supplied
ac
power
cord
to
the
AC
IN
socket
and
to
a
wail
outlet
(120
V
ac).
to
a
wall
outlet
When
the
ac
power
cord
is
plugged
into
the
AC
IN
socket,
the
battery
pack
(if
installed)
or
the
car
battery
(if
connected)
is
automatically
disconnected.
RECHARGEABLE
BATTERY
Insert
the
Sony
NP-1
battery
pack
(optional)
into
the
bat-
tery
compartment
as_
illustrated.
The
monitor
can
operate
with
one
or
two
battery
packs.
For
extended
use,
two
battery
packs
are
recommended.
EJECT
buttons
SONY
mark
OPERATE/CHARGE
switch
downwards
To
remove
the
battery
pack,
press
the
EJECT
button
upwards.
Note
:
Make
sure
that
the
ac
power
cord
and
the
car
battery
cord
are
disconnected
from
the
monitor.
Otherwise,
the
monitor
cannot
operate
on
the
battery
pack(s).
Caution
Do
not
use
any
other
batteries
than
the
NP-1,
even
if
any
can
be
inserted
into
the
compartment.
Charging
the
battery
pack
Before
using
the
monitor,
be
sure
to
fully
charge
the
bat-
tery
pack.
The
charging
time
is
about
6
hours
at
normal
temperatures.
1
Connect
the
supplied
ac
power
cord
to
the
AC
IN
socket
and
then
to
a
wall
outlet.
2
Insert
the
battery
pack(s)
into
the
battery
com-
partment(s).
3
Set
the
OPERATE/CHARGE
switch
to
CHARGE.
4
Depress
the
POWER
switch.
The
CHARGE
indicator
lights
and
charging
begins.
When
charging
is
complete,
the
CHARGE
indicator
goes
out.
Be
sure
to
reset
the
OPERATE/CHARGE
switch
to
OPERATE.
When
the
OPERATE/CHARGE
switch
is
set
to
CHARGE,
the
picture
cannot
be
monitored.
@For
quicker
charging,
use
the
optional
BC-1WA
bat-
tery
charger
for
NP-1.
Battery
life
At
normal
temperatures,
the
picture
can
be
monitored
continuously
for
about
60
minutes
using
two
battery
packs
and
operating
the
TV
tuner
connected
to
the
monitor.
When
the
TV
tuner
is
not
used,
longer
battery
life
can
be
expected
(about
75
to
80
minutes).
When
the
battery
is
exhausted,
the
green
BATT
in-
dicator
flashes
for
about
five
minutes,
and
then
the
power
is
turned
off
automatically
to
prevent
excessive
battery
discharge.
When
the
BATT
indicator
goes
off,
press
the
POWER
switch
and
replace
the.
exhausted
°
battery
pack(s)
with
fully
charged
one(s),
or
use
another
power
source.
CAR
BATTERY
Use
the
Sony
DCC-16AW
car
battery
cord
(optional)
fora
42
V
car
battery.
Connect
the
car
battery
cord
to
the
EXT
BATTERY
DC
IN
12
V
jack
and
to
the
cigarette
lighter
socket
of
a
car.
For
further
details,
read
the
instruction
manual
of
the
car
battery
cord.
to
a
cigarette
lighter
socket
to
EXT
BATTERY
DC
IN
12
V
When
the
car
battery
cord
is
plugged
into
the
EXT
BAT-
TERY
DC
IN
12
V
jack,
the
battery
pack
(if
installed)
is
disconnected
automatically.
Note
Use
only
the
recommended
car
battery.
cord
manufac-
tured
by
Sony.
Polarity
of
the
plugs
of
other
manufac-
turers
may
be
different.
Polarity
of
the
plug
of
Sony
car
battery
cord
:
—10—