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Service
RCA
Home
Manual
Model 18V100
Programmer
TV
Studio
Home
<,
Operation
^
II
Programmer,
TV
•
Testing
•
Disassembly
Model
18V100
Parts List
PRODUCT
II uses an
Studio
circuitry. The leakage
electronic
unit should be
power
procedure.
9 for test
TESTER CARTRIDGE AVAILABLE
an aid
servicing
As
to
II,
Studio
test cartridge is available
a
NOTICE
SAFETY
supply to
isolated power
current
to
time of game
checked
at
the digital electronics systems
at nominal cost through
operate the
ground of
repair. See
this
Page
of
Distributors.
Parts
RCA
the slot in
into
30 seconds.
in about
information.
ordering
for
SERVICE
organizations
For those
kit of Studio
games, a
Distributors.
Parts
service Studio
to
description and for
the console
See
This kit
II units
ordering
"Tester I",
Called
checks out
and
4
Page
PARTS LIST
planning
parts
II repair
includes all of
in
field. See
the
information.
for
description
to
the cartridge
the
AVAILABLE
service Studio
is available
the parts
Page
digital
and
from RCA
for
15
plugs
circuitry
Page
II video
necessary
15
s>
STUDIO
DESCRIPTION
STUDIO
BOARD
PC
STUDIO
REPLACEMENT
Information
infringements
patent right
any
II
BOARD EXCHANGE
PC
Console
Control
Switch Unit
Selector
Power Supply
II SERVICING
Checking
System
Connections
System
Test Procedures
Dissassembly
Control
Component
Frequency
Clock
EXCHANGE
Exchange Plan
Packing and
Board
PC
II SERVICE
furnished by
patents
of
or other
of RCA. RCA
Unit
Procedure
Replacement
Adjustment
Description
Shipment
PARTS KIT
ACCESSORIES
AND
PARTS
RCA is believed to be
rights of third parties
retains the right to
Table of
QUESTIONNAIRE
Procedure
and reliable.
accurate
which may
make changes
Contents
no responsibility is
However,
result from its use. No
at its
in this product
license is
discretion
assumed by
granted by
may be
as
RCA
implication or
periodically
-
for its use:
required.
Page
15
3
3
3
3
4
4
4
4
11
11
13
14
14
14
14
15
nor
otherwise
for any
under
sj
^
^
J
r
POWER
UNIT
SUPPLY
18 FOOT
CONSOLE
CORD
TV/STUDIO
SELECTOR
II
SWITCH
r
r
KEYBOARD
GENERAL
Studio
home
for
device.
display
of
Heart
microprocessor
circuit
computer.
of
variety
memory for
"Bowling",
console. A
cartridges for
"Baseball"
SYSTEM
Studio
Control
program
for
A
ON/OFF
INDICATOR LIGHT
DESCRIPTION
sophisticated,
is
II
a
entertainment
Studio
the
provides
It
educational
built-in
five
"Freeway",
receptacle
additional
many
"Blackjack".
and
DESCRIPTION
II consists of
—
Console
selection
microprocessor-based
using a
solid-state,
II is
a
functions
that
computer
central
entertainment
and
games
"Addition"
and
console
in the
major
three
the
Houses
processing.
and
broadcast
as a
-
"Doodles",
accepts
such
games
pieces:
keyboards and
Figure 1.
receiver
TV
integrated
40-pin
micro-miniature
for a great
control
programs.
"Patterns",
—
is included
plug-in program
"Tennis",
as
All electronics
STUDIO II CONSOLE
II Major
Studio
Description
console
are
system
is
as the
coaxial
Selector Switch
in the
in the
Control
receiving
allows
the Studio
also
with
ture
VDC
through an
Unit.
Program
electronics
all
KEYBOARD
CHANNEL
2/CHANNEL
SWITCH
SOUND
CLEAR
BUTTON
Assemblies
RF oscillator/modulator and audio circuits)
(digital,
board. Signal information from the console
on
single PC
a
the Selector Switch
transferred to
This
cable.
Unit
Switch Unit
Selector
the Studio II Power Supply Unit, the TV
Console,
antenna and
receiver
the TV
II or to
game's on/off switch.
serves as the
Supply Unit
Power
.8m) cord and
6-foot (1
a
phone jack
(3mm)
is coupled to
RF-filtering circuit housed in the Selector Switch
SWITCH
(UNDER
Unit through
cable carries DC power from the
same
the console to operate the
to
—
Forms
interface between the
the
the
receiver.
TV
be connected conveniently
to
the receiver's antenna system. This switch
-
sealed, 120
A
plug that connects
on the
Switch Selector
the game's 18-foot (5.5m) coaxial cable
B
3
ON/OFF
CONSOLE)
single
a
electronics.
two-position switch
A
VAC to 9 VDC
to a
Unit. The
to
minia-
either
adapter
9
The recommended
whether the problem
mine
components, the
itself.
it
See Page 14.
is available
Studio
means for
you have
Supply
more
SYSTEM
easily using
for ordering
checked by
this
SYSTEM CONNECTIONS
of any TV
subassemblies. Figures
typical
switches
off
ates on TV
position of the switch.
cupied channel; or
on the channel with
are shipped
position.
"Studio 1
red
the TV
TEST
left-hand Keyboard
way" and
adjust
controls.
Operational Checks
(See
Studio II console, scans
tine that
interconnecting
If
PC board in
the
must
returned to
be
IMPORTANT: No
or repair an
adjust
exception of
the
on Page 13.
described
aid
servicing
As an
to
from RCA.
II; however, it does
isolating malfunctions
When
Checking
procedure takes more
Studio
Recessed on the underside
while the other changes
Slide the
glow of the
Press the
The test
comes in for service,
Studio II
a
all three assemblies:
Unit and Console.
plug-in cartridges,
CHECKING
Studio II
cartridge
test
a
information).
operating each
II connects
receiver. Figure 2
video-tape machines and
(Fig.
One
3).
Channel 2 or TV
areas where
the weakest
from the factory
switch on
1".
sends power to
This
pilot light
receiver. Studio
PROCEDURES
"Clear" button
A (Key A4).
the track (Fig.
fine tuning and
the receiver's
Page 7
Test
procedure
for
cartridge, which plugs
takes about
30
II service procedure
Studio
RCA for
the
The cartridge is not
operation can be done
to
4,
switches the game
The switch
the
the
is in one of
cables or in
the console
repair on an
attempt should be
inoperative PC
clock-frequency
Studio II,
test
a
quick and
provide a
in the digital
Selector Switch Unit,
If the complaint
should be
these
available from
performance
System
built-in game
the test cartridge
time than
300-ohm
the
describes the
and 6 descirbe
5
typical
console are two
of the
operating
Channel
should be set on
channels are occupied,
both
broadcast
with the
Switch Unit
Selector
the console
on
console) and
the
II is now ready
console and
on the
This sets
immediately.
appears
8)
vertical/horizontal
Cartridge
built-in programs).
using
into the
digital circuitry
If it finds a
seconds.
the periphery
is found
VHF antenna
channel. Studio
3 depending
switch
Studio
is to deter-
the console
faulty,
be
to
exchange
made to
—with
board
adjustment
cartridge (see
essential to
convenient
systems.
important that
it is
Power
one or
involves
included as well.
quickly and
Page
RCA (see
can also be
function; however,
terminals
hookup of the three
the hookups
cable TV setups.
slide
sound (beeper)
on the
the unoc-
signal. Units
in Channel 3
(Fig.
(indicated by
connects
for operation.
press Key 4 on
II for "Free-
Studio
necessary,
If
cartridge slot on the
for trouble with
malfunction,
basis.
below)
service
check.
with
II oper-
7)
hold
15
on or
to
it to
the fact
Servicing
II
Figure
the
Figure 4. Selector Switch Box
-AX
CO
CABLE
Figure 5.
rou-
a
POWER
\0>
SUPPLY
*use
Studio
Figure 2.
of Channel Change
3. Locations
On/Off
ANTENNA
I
VIDEO
TWIN
CASSETTE
LEAD?
MACHINE
^
Recorder
Cassette
TWIN
CATV .
TUNER
LEAD^
Selector Switch Box
and Home
75 ohm/300
transformer
II Connection
Switches
.
STUDIO II
SELECTOR
SWITCH
BOX
-^ ANTENNA
TERMINALS
Home
and
STUDIO II
SELECTOR
SWITCH
BOX
ANTENNA ,
^
TERMINALS
Connects
Receiver
if required.
TWIN
LEAD^
/
Connects
TWIN
LEAo7
Between
SELECTOR
SWITCH
TO
ANTENNA
ohm
Diagram
and
Receiver
matching
Sound
TV
RECEIVER
Between
TV
RECEIVER
CATV Tuner
sj
^J
sj
Video
f
r
r
indicated
is
cartridge
NOTE:
of the
500mA
original
Press
1.
Tester
sert
NOTE:
side
concerning
covering
Release
2.
appears
9a
of
scan
through
pattern
appears,
about
In
to
shifts
scanning a
the end
lower
the
and
black
about
takes
pattern
all
cates
"checkerboard"
the
shown
board
the
If the
-
one at a
key
each
checkerboard
actuation,
Page
(see
CO-AX
Figure
on the
sets up a
The
power
and
cartridge
I
Insert
toward
"Clear"
on
system
the
white
the
fails to
faulty
a
1 1
pattern
the
black
the
of
half to a
then a
2
again
memories
Fig. 9e,
in
must be
checkerboard
time
switch
the
11).
CATV
Selector
6.
power
power
hold
removal
the
screen
appear
chip
seconds,
field.
second
series
seconds.
shifts- to
-
closes,
square.
keyboard
When
CATV
MATCHER
screen;
TV
for
test
Cartridge
Test
during
unit
unit
unit.
"Clear"
into
cartridge
"Clear"
plug.
button.
immediately,
(indicated
field in
or a
is
shown
This
scan,
series
of
At
that
operational.
pattern
indicates
replaced.
appears
Keyboard
of
(If any
all key
Switch
Matcher
two
the
Parts
(see
button
slot
into
button.
conductive
of
by
the
pattern
indicated.
first
the
in Fig.
scan
the
transient
of
black
the
illustrated
in
chip
digit
the
defective
is
closures
Box
and
if there
requires
test.
while
pattern
A
the
lower
scan
takes
system
lines
end
A
the
failure
as
A, and
on
digit
STUDIO
SELECTOR
TERMINALS
Connects
Home
is
keyboards.
Use
List)
Studio
on
holding
console
Follow
Tester
and
black
half
other
Replace
is
with a
9b
another
changes
vertical
on
this
of
in
or
digit
center
in
Fig.
in
then
screen
remains
and
are
II
SWITCH
BOX
ANTENNA
Receiver
trouble,
no
substitution
special
the
instead
II
"Clear"
with
label
rubber
similar to
I
streak
the
of
that
than
board.
PC
complete.
white
1
white
white.
short
9c.
Fig.
digits
the
of
PC
the
touch
9c,
Keyboard
should
screen
on
be
must
complete
Between
the
the
of
console.
button.
label
directions
strip
that
begins its
moving
pattern).
shown
The
streak
seconds.
1
pattern
the
lines
sequence
This
sequence,
This
appearing
screen, as
board
the
change
replaced
(indicating
TV
RECEIVER
CATV
indi-
after
In-
Fig.
of
If the
display
on
the
and
keys
As
B.
to
At
on
in
key
Cable
Display
"Freeway"
Sharp
for
Receiver
8. Adjust
Figure
a
Keyboards and
Operable
(d)
Electronics
ANTENNA
TERMINALS
£1
Figure
nc/i
-«
TV
-T®~L
STICKY
7. Selector
TAPE
»- STUDIO II
Switch
o
mmmm^m
TO
CONSOLE
Box
(e)
Figure
A7 and
Key
Bad
Tester 1
9.
Screen
Digital
Failure
Patterns
laxoos
IT QdVO 3HV0
Figure
10. Overall Block Diagram of Studio II System
-M-
-c+-
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sj
sj
J
r*
r
satisfactory
pattern
and
white
"Clear"
the
If
again
starts
"Tester
NOTE:
the
cartridge
Operational
The
"resident"
"Bowling"
Press
Screen
immediately
and
moving
STRAIGHT,
Keyboard
ball toward
hook
Knocking
score
score
a
about
downed.
keyboard
9d.
Fig.
of
white-on-black
button
the
as
test.
I"
Reconnect
system.
for
Checks
following
games
Game
"Clear"
display
will
down
and
up
PLAYER
SCORE
FRAME
NUMBER
Figure
KEY
Figure
A is
the
Key
while
out
("ST-
of 20
("SP-1
of 1 5
seconds
3
Player 2
function),
The
functions
button
Store
future
Using Built-in
instructions
evaluate
to
key.
"scorecard"
sets up
A
11.
«r5
12.
in action:
pins; Key
A8
pins on
all
20"
after the
then
pattern
until
is
the
the
use.
Press
alley
the
at
ana
Bowling
Bowling
delivers a
lower
at
5"
on
plays
the
released.
original
special
are
Studio
Key A3
(Fig.
left
Pressing A5
A2
one
screen).
second
pattern
the
flip-flops
"Clear"
normally,
This
unit
Programs
operating
for
II
(left-hand
11)
(Fig.
12)
side.
noa
"Scorecard"
Ball
a
sends
(downward)
right
throw
corner
left
The
ball
right-hand
shifts to
between
button
the
completes
unit
power
the
with
performance:
about
for
bowling
with
PLAYER
SCORE
Release Keys
releases a
with a
ball
registers a
of
scorecard
thrown
is
Keyboard
black-on-
is
whole
into
test
built-in
the
keyboard).
3
B
Display
left
hook
strike
alley);
reappears
or
the
actuated.
sequence
the
seconds
ball
straight
(upward)
(Fig.
with a
two
pins are
all
B.
"OK"
throws,
12).
for
CAR
OPPOSING
COMPUTER
THE
BY
Figure
Game
"Freeway"
(Fig.
steer
up
ulate
trolled
of
"Clear"
Press
13).
car to
(throttle);
race
"mileage" by
(narrow-bodied)
race,
the
PLAYER A
SCORE
Press
key.
Key
Key
left;
screen
the
L \
Figure
Function
"Addition"
"Clear"
Press
14. Player
in Fig.
shown
lower
in the
digits
For
B.
A or
board
"4".
entered,
and
or
Punch A3
higher
the
wrong
If the
11).
is
gets
player
the
are
There
bination.
"Patterns" Function
Press "Clear" key.
Press Key B4, then
from right
screen white
the matrix is all
black. Press Key B5, the
BO, painting resumes.
white,
CONTROLLED
CAR
PLAYER'S
Display
Screen
"Freeway"
13.
appears
racetrack
A4;
Press Key
BO
B6
Key
avoiding
start
to
steers
A8
car
displays
slows
collisions
in a
race.
car
the
Press
right.
to
(brake).
car
with
two-minute
distance
hold
and
Press A2
Object:
computer-con-
race.
traveled.
PLAYER B
qdsk
^nm
j
\
NUMBERS TO BE ADDED
THREE
Screen Display
"Addition"
14.
display
Screen
A5.
Key
Press
key.
has five
and press
group
the
example,
score.
B3 to
score.
the
entered,
total is
second
no
in the
20 sets
Press Key A2. Screen remains dark.
Key BO. The computer then "paints"
left
to
computer then paints the screen
the
painting stops
add
seconds to
correct
the
"130"
Fig. 14
on
the
sooner
The
score
(Maximum
keyboard
the
on-screen
the
on
chance
random
in
run
from bottom to top. Once
and
freezes, press Key
or
At the
SCORE
the
answer
correct
for
order.
on
Key
speed
to
Accum-
appears as
three
on
adds up
total
each
"locks
com-
screen
B4 to
end
entry
Key-
out"
the
to
is
The
keys of Keyboard
to the white
arrowheads on the keyboard (Fig. 15).
an interesting
pattern, press "Clear" key,
times,
B6 once,
then
key entries or "moves". After
matically starts
Key
Figure
"Doodles"
lower
according
trail
leaves no
to repeat the pattern.
BO must
be pressed to start the
KEYBOARD
aha
f
nan
I
;
a
l
Keyboard "B"
15.
Function
Press
"Clear"
left
corner. Use keys
to white arrows
as player "writes"
trail. Retrace
and
A
B Studio II
CLEAR
Arrowheads
key. Press A1
with Keyboard
steps to erase lines already written.
B
BO.
"write"
screen according
on the
then A2, B2 15
The memory stores up to 130
moves,
130
computer auto'
the
For 129 or fewer moves.
repeat cycle.
KEYBOARD
©
According to
Moves Spot
Panel
on
Single
.
dot appears on screen
on Keyboard B to move spot
on panel (Fig.
B.
16).
Pressing
Key
To
B
KEY#0
STARTS
COMPUTER
PATTERN
leaves
B5
Key BO
form
White
at
a
—
Keyboard Tests
malfunction.
tested using the
must be "on".
enter
button is pressed, the
button is operational. The
seconds that the
the entire keyboard
display. If
entire keyboard
If "Tester I"
1 : Punch
Step
2:
When the
Step
series of
a
any
cartridge is
If Tester I is
built-in
"Addition"
up
three-digit
wrong answers,
random-order
can
fails
key
should
am
unavailable,
"Addition" game:
beeper sounds,
be
to
be
available, use
the keyboards
game (Key
number appears
beginning
indicating
beeper sounds
is
display
on
checked during the
key is
sound, that
replaced.
ana
it
with A1
only
13D
#5 START
KEY
\___
r\~~.
io ni
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o\po
PLAYER A
ENTERS
Q
^
Figure 17.
"Double-Hit"
early
Some
occasionally
exhibit
hit"
when Studio II operates in the "Patterns" mode (un-
wanted
dots appear on the screen,
twice for
only one key entry). The only remedy
hits is
keyboard replacement.
Coaxial Cable Tests
The
coaxial
and DC from
the power
cable
from the plug end (Fig.
Studio11
DDD
DDD
a
<
Using "Addition" to Check Keyboards
Keyboard Complaints
production units (Serial Nos. 37125 and lower)
keyboard malfunction termed "double-
a
cable carries
unit.
DDD
©
CLEARI
beeper sounds
and the
modulated RF from
an
Use
ohmmeter to test the
cable
1
A good
8).
DDDD
—
isolate
to
Sound switch
A5).
on screen,
As each
.
particular
the
during the
Usually,
screen.
five-second
faulty and the
B
DDD
]
'
—.
double
for
the console
measures 5
keyboard
can be
PLAYER
ENTERS
SUM
five
B
*J
J
to
Figure
16. In "Doodles", etch
8
sketch
a
"B" keyboard
electronically with the
CABLE CONNECTOR
s~^
N
I
Figure
18. Checking Continuity
I—
/©n
Z>««">
I
I
4-
—
OHMMETER
""J
of Co-ax Cable
r
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r
r
—^
ohms
50
conductor.
center
resistance
Replacement".
Cable
Switch
Selector
quickest
The
substitution
unavailable,
circuitry
components.
GAME INPUT
TERMINALS
(PHONO
JACK)
When
coaxial
the
the DC
pletes
the
With
and
sole
twin
the
If the
Parts List)
(see
It is
field.
radiation
If snowy
cannot be
\
TO
120V
AC
LINE
Figure
resistance
should
with a
use a
schematic
(see
>-9-
J1
N
Figure
switch
the
cable
switch
forms a
for
lead
Selector
carefully
limits
pictures
shut off,
-ft-
20.
with
(With
between
be
Unit Tests
test
new
DC
H
19.
from
circuit
the
in
circuit
normal
Switch
since
specified by
check
Testing
negative
positive
20
troublesome
for a
(see
unit
voltmeter
Fig. 19)
of
A
A
DC INPUT
TERMINALS
(PHONE JACK)
Schematic,
"Studio
in the
is
console to
the
between
position,
"TV"
between
reception.
TV
Unit is
cannot
it
manufactured
the
in the
occur
antenna
Power
Ripple
ohmmeter
polarity
and
Parts
and
for
CONNECTION
I 0=
Selector
console
the
the
defective,
satisfactorily
be
so
FCC.
"TV"
connections
ADJUST
250 mA
MILLIAMMETER
Unit
Content
polarity
center
on
ohms.)
30k
Selector
If
List).
ohmmeter to
or
open
TWINLEAD
TV SET
A A
TRANSFER
SWITCH
O
1
o r
STUDIO
RFC2
Switch
position,
II"
twin
the
and
disconnects
it
antenna
it must
to
not
as
position
FOR
ON
Output
on
conductor,
"Coaxial
See
Switch
unit
new
a
check
short-circuited
1
1-
TV
J3
TERMINALS
I
Unit
connects
it
lead and
supply.
power
the con-
terminals
be replaced
repaired in
exceed
Studio
or
short
for
Voltage
for
the
Unit
ANTENNA
and
the
circuits
unit
com-
to
antenna
result.
eliminate
Power Supply
The
is
voltage
is
connect
tion,
conditions
these
(measured
DC
peak.
List).
Leakage
With the
check
phone plug,
the
meter.
polarity
plug
the
RF
II
and
Figure
touches
lead
production
(Late
problem))
Unit
Supply
Power
ripple
and
unit as
with
unit if
Replace
Current
Power
leakage
for
Leakage
and
Figure
NOTE:
with
ative
plug-in jack.
have tolerances
penetration.
plug
increase
to
slightly as
remove
present.)
22.
Tests
limits.
ranges
oscilloscope)
Test
Supply
current to
shown
as
current
recheck
21. AC
power unit
If
operable
effective
shown
any
Removal
the box
Unit
shown
beyond
must not
Some
untrimmed
units use
operates
check unit
To
in Fig.
between
Unit
earth
Fig.
in
leakage
Leakage
Studio
early
that
Solution to
in Fig.
of Material
rivets,
or
insulated
8.5
must
these
plugged
ground
21 ,
exceed
current.
checks out
production
conflict
length of
22. (Use
mold
snowy
between
for
20. DC
and
not
specifications
using
EARTH
GROUND
Test
II console,
and
problem is
plug by
flash
FILE OR
SLIGHTLY
TO INCREASE
PLUG
from
rivets
satisfactory
output
10V.
exceed
into
on
an AC
0.5mA.
OK
prevent
sharp
from
SHAVE
PENETRATION
Front Edge
pictures
which
carefully
under
Ripple on
1
(see
an AC
both poles
milliam-
Reverse
is inoper-
but
check fit
plugs
adequate
often
filing the
knife to
plug
may
chosen
opera-
peak-to-
V
Parts
outlet,
and jacks
simply
if
of
this
of
AC
of
jack
Jack
If either
board.
terminal
holding
rivets
or
metal box
the
Figure 23.
Studio
II
Console
Assembly
^J
10
r
~
r
r*
CONSOLE
halves of
and a
by
moved, the
Lift the
Fig. 24. This
board
and flange of
CARTRIDGE
COMPONENT
PC Board Removal
solder coaxial
board
Packing
Keyboard
described above.
the
straight out
DISASSEMBLY
consists of six
The console
"Clear"
The upper and lower
removing
stands on
RODE
printed circuit board, two
the cabinet,
switch/power-on indicator.
halves of
5 Phillips-head screws.
underside
of
PC
board up at the
the
exposes
if set
edge
cabinet upper
"***
—
^
the printed
cartridge socket
component side of the
between pillar
half
'^A
\$
"\°
Figure
24. PC Board in
The channel-change
NOTE:
switches, plug-in cartridge
components mounted
field replaceable.
speaker)
CAUTION:
be used on
age will
Disconnect black, white and
ribbon
Shipment" for
and
Replacement
Keyboard
1.
2. Unplug
ribbon connector on the
of the connector.
on the PC board
All PC board
exchange.
require board
Tuner sprays containing silicon
slide switches.
result.
REPLACEMENT PROCEDURE
cable from board
board connectors.
leads from RC
board exchange
replacement requires console disassembly as
the ribbon cable of the
PC
subassemblies: the two
separate
cabinet are
the
With the bottom
circuit board
side as shown
(near "Clear" switch)
shown.
as
^k^===^
*
x%
/
S
^/^^^^^
V
X^Ss^^
\^^
]
TOP
HALF
OF
CABINET
Position
Access
Wiring
on/off
and sound
other
connector and
are not
faults (except
Irrepairable switch dam-
yellow wires from
pull
carefully
and
See "PC Board
details (Page 14).
defective
keyboard from
pulling
board by
keyboards,
separated
cover
is exposed.
board. The
CART
"^-^
SOCKET
SL0T
must
not
board; un-
out key-
ribbon
the
3. Release the keyboard from the
brown colored latches as illustrated. Keyboard
two
free
console.
of
re-
in
Figure 25. Releasing
4. Install
new keyboard
opening in console before
5. Push
ribbon cable into connector.
NOTE: Some Studio II units
connectors on PC board. Ribbon
bon
center in the
operation.
for proper
6. If ribbon
in connector, trim back
household scissors
Coaxial
shield covering
overheat
lead first.
cable from keyboard fails
Figure
Trim Ribbon
26.
Cable Replacement
1 . Remove bottom
end of
Pry
CAUTION:
wiring
PC
on
2. Disconnect cable
foil.
3. Install replacement
4. Re-install
shield
console
Keyboard from
feeding
by
ribbon cable through
latching keyboard in place.
unenclosed
use
all 1
so that
connector
1/16
expose
to
Damaged
half of console
coaxial cable.
carefully so
board.
by
cable as shown by soldering center
cover carefully
1
to
inch
from edge with
contact.
fresh
Cable
with Scissors
Edge
cabinet.
as not to damage foil
unsoldering shield first.
and firmly. Center coaxial
unlatching
by
is now
Console
rib-
cable must
leads contact
make good contact
ordinary
Repair
to
Pry off metal
Do not
11
NOTE:
saw.
Disconnect
Resolder
Installing a
the
from
See
I
2
O
3
z
2
I
(Fig.
Center
Overheat
Not
Do
Replacement
of a
use
piece
a
Fig. 28 for
5.75-
*m
I
-»»j
27).
Co-Ax
Lead First
new LED in the
special tool that
of sheet
dimensions.
I
o.2rj-«-
cable in slot in cover
minimize radiation of modulated
Figure 27.
LED indicator
quires
cated
Shield
M
must
carrier.
Shield
on
Foil in
metal with a
I
0.26"
T
be
First to
Installation.
Board.
console re-
can be
MATERIAL:
0.050
' ALUMINUM
STEEL
OR
fully seated to
Cable.
Replace
fabri-
sabre
underside
From
4.
black
collapse
Remove
cutters.
cutter.
Install new
5.
cover
console
Cross-Sectional
Figure 29.
Place new
6.
pigtail toward side
). This is
and 31
d
Figure 30. Polarity
of cover,
plastic holder
from
holder
holder.
LED
until it clicks
Console
LED holder with
LED in
connected to "Clear"
important
-.
f¥
>
bend
with
console
Press holder
into
View
Cabinet
—
indicator
CATHODE
SHORTER
-
+
Marking
clipped
needlenose
holes
(Fig.
place
of Seated
(-)
PIGTAIL
THAN ANODE
/
+
!
T>
<r_
using
gently
29).
shorter
switch (see
cannot
on
pigtails
pliers
pliers
into
LED
(cathode)
light if con-
LED
back and
diagonal
or
or
hole in
Holder in
Fig. 30
YELLOW
/
WIRE
sJ
*
J
j
^
Figure
1 . Unsolder the
switch terminals
This
pigtail.
frees
2. Snip both
3. Place console
with small screwdriver or
LED
12
Replacement
LED
28.
black and white leadwires
and
the console top
LED pigtails off close to
unsolder
cover, face
yellow wire from the
the
half for LED
on
up,
1/8-inch drift pin.
block
Tool
from "Clear"
the LED.
and
LED
replacement.
drive out old
Figure
* n
31. Indicator
(PART
Assembly
PLASTIC PILLAR
CONSOLE
OF
CABINET)
,>
.
nected with reversed polarity. Use fabricated tool
push LED into holder. LED "clicks" into place.
without
shoulder usually
a
7. Form snipped leadwires
r
new LED pigtails
heating LED.
to complete installation.
to them. Solder quickly to prevent over-
8. Reconnect black,
white and yellow leads from PC
r
32. Power-On Indicator
Figure
r
r
(Fig.
in
Fig. 31 and connect
TO PC BOARD
Any tool
Wiring
pushes LED out of the holder.
as shown
BLK . WHT
28) to
board
CLOCK FREQUENCY
Incorrect clock frequency
on
screen. This results
sync rate of Studio II
ceiver. If
the beat note is
noticeable
to the critical user. Clock
ment on the PC
shown in Fig.
post or
milliseconds
sensitivity
for zero
ment.
board.
1
Connect
scope probe to the junction of
34. Connect scope ground
to other suitable
2. Adjust
scope
more
or
for about
Push
3.
"Clear"
waveform drift.
L,
f
Figure
33.
Waveform Used to
Time-Base Locked to
Scope
ADJUSTMENT
from a
and the hum frequency
board ground.
time
base for
(sync on "Line")
250 mV/cm
button on console and
See
PROCEDURE
adjustment causes pattern
beat note between the vertical
more than 0.5 Hz,
Fig.
frequency is a
total
a
(0.625
Guard against
33.
in the TV re-
the weave becomes
two resistors
RF
to
length of
sweep
vertical
and
V/in).
adjust
shield, cartridge
V1WWVWWWWL
(VERTICAL
SYNC
INTERVAL)
Clock Frequency.
Adjust
Power Line
60Hz
slug
input
slug
slowly
overadjust-
'
weave
adjusts
as
20
W
r
Figure
Scope
34.
Connections
for Adjusting
Clock
Frequency
13
EXCHANGE
RCA
Carolina.
North
refurbished
provided,
BOARD
PC
NOTE:
below
crumpled
sized
rounded
that
sure to
Page 15)
1 . Pack
Note
shown.
Service
may
parts
assemblies
Quantity
2
2
1
1
3
1
Includes
*Price
PLAN
operates a
and
course,
of
PACKING
If custom
is not
carton.
with
might
include a
in
defective
relative
Figure
organizations
order
through
reusable
subject
DESCRIPTION
PC
Defective
returned
the
available,
newspapers
Make
cushion
make
package.
the
PC board
positions
Packing
35.
kit of
a
RCA
PC Board
Coaxial
Selector
Power
Keyboard
shipping
change
to
Supply
board refurbishing
boards
PC
sender at a
the
to
board
exchange
SHIPMENT
AND
container
shipping
PC
pack
"bubble
or
is
board
sure
prevent
to
for
useless
board
questionnaire
completed
in foam
PC
of
Board
PC
to
desiring
replacement
II
Studio
Distributors
Parts
Description
coaxial
(less
Assembly
Cable
Assembly
Switch
Unit
Assembly
for
carton
notice.
without
PC
facility at
to
sent
cost
repairable.
is
described
in
board
pack"
completely
shipping
exchange.
shipping
components
board
Foam
in
Studio
service
stock
as
cable)
each
facility
this
of $1
cushion
in suitably
damage
(from
container
Container
parts
Stock
board
Board
Swannanoa,
are
5.00*
of
sur-
Be
and
II
replacement
and
No.
Stock
742463
742421
18V102
18V101
742458
Exchange
the
of
of
papers
indicating
refurbished
of
PC board
questionnaire
as
*Price
QUESTIONNAIRE
CRUMPLED
NEWSPAPER
Service
No.
1
molded-in
foam
one to
2. Pack
Fill
3.
upper
4. Include
5. Ship
Figure
199047.
total of
a
includes:
Quantity
packing
another.
foam
cushion
as
in all
abnormal
board).
corrugated
check or
will be
prepaid
II PC
Studio
Distributor
RCA
Bee
Old
Swannanoa,
subject to
36.
Parts
Cost for
$122.90*
2
2
3
3
1
supports
fail
to
enclosure
around
blanks
symptoms
Pack
filler as
shipped
packed
(Parcel
Board
Road
Tree
North
change
Packing
Kit
the
Speaker
LED Power
"Clear"
Pushbutton
of 4 Console
Set
the
in
easily,
mate
carton.
in
foam
questionnaire,
on
completed
shown
money
the
to
defective
with
Post or
Refurb.
Special Products
&
Carolina
without
Foam
entire
20
for the
Description
Indicator
Switch
for
plastic.
foam
reverse
Use
enclosure.
(questionnaire
questionnaire
and
for
order
address
board.
UPS)
Dept.
28778
notice.
Board
PC
$99.95*
kit is
individual
(Incl. Holders)
"Clear"
Rubber
halves
If two
position
relative
news-
crumpled
those
particularly
with
packed
outside
on
carton.
in
pack
refurbished
$15.00*. A
the
on
supply
you
to:
Div.
CORRUGATED
Carton
in
Container
-
compared
as
kit
The
pieces.
Stock No.
742448
742461
742459
Switch 742460
Feet 742462
^/
^^
BOARD
J
v
with
J
14
r
r
1
pack
Please
1
(Price subject to
1
Please describe defect
1
s
1
partial display, no
C/3
I
h-
e?
z:
o
_i
<
i-
o
'
|
J
,
LLi
_l
|
00
I
|
o
o
<
h-
~
O
1
|
Intermittent
Defect:
in-warranty
For
Note:
Form PA737
RCA
Please pack
(Price subject to
describe defect
Please
display,
partial
Intermittent
Defect:
in-warranty
Note: For
Form PA737
RCA
completed
change
symptom
sound, etc.)
exchange,
board
"Repair Report".
completed
change without
symptom (s). (Nodisplay,
no sound, etc.)
board exchange,
"Repair Report".
questionnaire in
STUDIO II PC BOARD
container
notice.)
without
(s). (Nodisplay,
Continuous
include
STUDIO II PC BOARD
questionnaire in container
notice.)
Continuous
include
Replacement Parts
QUESTIONNAIRE
EXCHANGE
defective board
with
<
Studio II Serial Nn
RETURN
Firm Name
Firm Address
Pity
Attn:
QUESTIONNAIRE
EXCHANGE
with defective board
Studio
I! Serial
RETURN
Firm Name
Address
Firm
City
Attn:
Accessories
and
No
with
with check or
check
money
or
LABEL
SHIPPING
State
money order for
SHIPPING LABEL
State 7ip
order for $15.
Zip
$15.
Description Stock No. Description
PC Board (less coaxial
r
in reusable shipping
Cable
Assembly
Power Unit Assembly
Selector Switch Assembly
Keyboard
Assembly 742458
Speaker,
2.24-inch diameter 742448
LED Indicator
"Clear" Switch 742459
2
Requires
(incl.
special power unit Stock No. 5008333
r*
cable, packed
carton)
(incl. cord
plastic
holder)
742463
742421 "Tester
plug) 18V101
and
18V102
742461
for
Pushbutton
Rubber Feet (Package of
Power
Console Housing,
Console Housing, Lower
Dress
Dress Plate
"Clear"
Test Cartridge
I"
(for
Unit
use with
Upper
Plate (LED Indicator and
("Studio II") (Dwg. No.
Switch 742460
4)
2
"Testei
Half
Half
Stock No.
1")
(Dwg.
No.
(Dwg.
No.
'
'Clear" button)
No.
(Dwg.
742462
5009339
5008333
1809952)
1809951)
1808321-1)
1808319-1)
15
^
^
"j
3
RCA
Distributor and
|
Special Products
Division
Deptford
|
Printed in
Registrada(s)
NJ
08096
Tmk(s)
Marca(s)
®
Form
3E4589
U.S.A.
11/77
J
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