Mattel INtelliViSiON" 2609 User manual

SUBASSEMBL V
SERVICE MANUAL
I NtElliViSiON"
Intelligent Television
MODEL 2609
MATTEL ELECTRONICS
5150 Rosecrans Avenue
Hawthorne,
California 90250

TABLE OF CONTENTS
I. Diagnostic Routine .............................................. . Page 2
II. Preliminary Checklist
......................................... . Page 5
III. Troubleshooting
................................................. Page 6
IV. Disassembly Instructions
A. Console Disassembly Page 10
B. Logic Board Replacement ..................................... Page 10
C. Power Supply Board Replacement ............................. Page 12
D. Transformer Assembly Replacement ......... . ................. Page 12
V. Handcontroller Repair .................................. . ......... Page 13
VI. Power Supply Board Repair
...................................... Page 17
VII. Parts List
........................................................ Page 18
VIII. Exploded View
of Console Assembly .............................. Page 20
TOOLS AND EQUIPMENT REQUIRED
• Color TV Receiver
• Basic Electronic Hand Tools
• Digital
Multimeter (DMM)
• Test Cartridge MTE-201
-1-

DIAGNOSTIC ROUTINE
SECTION I.
Follow this procedure until you find a
malfunction. Then refer to the PRELIMINARY
CHECKLIST (Section II, page 5 ) and
TROUBLESHOOTING (Section III, page 6 )
and locate the problem or condition. Follow
instructions to correct the fault. Before re-
assembling the Master Component, go through
this DIAGNOSTIC ROUTINE again.
TURN ALL AUTOMATIC COLOR CIRCUITS TO MANUAL POSITION.
1. Connect the Master Component to TV,
plug in power cord, set the Antenna Switch Box
to TV and determine that the set works cor-
rectly on broadcast stations. If there is any
problem, refer to the PRELIMINARY
CHECKLIST.
2. Set the Antenna Switch Box to GAME. Set
the Channel Select switch of the TV to the
deSignated channel for the Master Component.
CARTRIDGE
3. Insert the MTE-201 Test Cartridge. Slide
the ON/OFF Switch to the ON position and
depress the Reset Button on the Master Com-
ponent. The unit will proceed through a series
of checks.
4. At the completion of the above test
sequence, the
Hand Controller test display will
appear as shown in Figure 1.
(a.) Press each key on the Hand Con-
trollers, one at a time and verify that each
corresponding test image turns from yellow to
white when the appropriate key is depressed.
NOTE:
The right Hand Controller will affect the
left test image and vice versa. -2-
(b.) Press
the top side buttons on the
Hand Controllers one at atime. Make sure that
the pair of Fs change from yellow to white.
(c.) Press each
lower side button on the
Hand Controllers one at a time and see that the
letters Land R change from yellow to white.
(d.) Depress
the directional disc on each
Hand
Controller and a white arrow will appear
in
the black circle. As the directional disc is
rotated,
the arrow wi II rotate. Check to see that
the arrow pOints in 16 different directions.
(e.)
Check the row of colored boxes for
similarity as listed in Figure 1.
Next, depress the digit keys 1 and 9 simulta-
neously on either Hand Controller and the test
sequence
will proceed to the sound checks.
1 l:r 9 TO CONTINUE
1 2 3 1 2 3
I F 4 5 6 FI I F 4 5 6 FI
I L 7 8 9
RI
I L 7 8 9
RI
c 0 E c o E
•
812345678
COLOR CODE: I. Blick
6. light Gr ••n II. BrDwn
2. Blue
7. Yellow
12. Mlgenll
3. Red
8. White 13. LIght Blul
4. Tin
9. GrlY
14. YIIIDw/Bnen
5. Dirk Green
10. Orlngl
15. Purple
Figure 1 Hand Controller Test Pattern

5. Verify the following sequence of sounds
is heard:
(a.) A
low frequency rumble .
(b.) A high
note stepping down through
five octaves (repeated three times).
(c.) Random noise (hissing)
starting at a
high volume and diminishing slightly.
(d.) A single tone, starting at a
high
volume and diminishing slowly .
(e.)
Two gunshots, one at normal volume,
the second at half volume.
If all of these sounds are heard as described,
depress the CLEAR key
on either Hand Con-
troller. In the event any part of the test has
failed, depress the ENTER key. (NOTE: The
test sequence
cannot be advanced if the
CLEAR
or ENTER key is depressed while
sounds are being generated.)
6. The next segment of the test presents a
series of patterns,
ending with the pattern
illustrated in Figure 2.
Check colors in the test
pattern against Figure 2
for similarity and defi-
nition . If test pattern accuracy is satisfactory,
press the CLEAR key. If it is
unsatisfactory ,
press the ENTER key.
..
. - - -- .- .. -- .-
.- ... -_.
r .
>--- I ?
~
J 4
5 6
7~ . 7 I
I ' 1
A ' L'~'
1B
3
Ie 4
4 6 r J ~
I
IE
2
2
IF 8 3
IG
4
. ~OK,
ENTER
= BAD
1:17 ".-
COLOR CODE I. Black
6. Light Green II. Brown
2. Blue
7. Yettow
12. Magenta
3. Red
8. White
13 . Light Blue
4. Tan
9. Gray
14 . Yettow / Green
5. Dark Green
10 . Orange 15 . Purple
Figure 2
-3-
7. The next portion of the test sequence is a
pattern
of colored blocks with the two larger
blocks alternating with
the words MODE TWO,
as illustrated in Figure 3. Check colors in test
pattern against Figure 3
for similarity and defi-
nit ion. If test pattern accuracy is satisfactory,
press
the CLEAR key. If it is unsatisfactory,
press the ENTER key.
COLOR CODE : I.
Black
2. Bl ue
3. Red
4. Tan
'. ' .~
1:43
~ . __ _ _ .- _ -=-=-= = = ==::::J
6. Light Green
7. Yellow
B. While
9. Gray
11. Brown
12. Magenla
13 . Lighl Blue
14 . Yellow / Green
5. Dark Green
10. Orange
15. Purple
Figure 3
8. The last test alternatelyflashes the patterns
"FIB" and "VIS." Press CLEAR for pass or
ENTER for fail.
If no failure has been detected,the title page for
Baseball will appear; this indicates the Master
Component has passed all the automatic and
[ l.J<J! J
~
~
~
LUosl
~
~
~
~
Figure 4
~
1- Uo 9]
[lJ1S J

operator tests. In the event a failure has been
detected. instead
of the title page being
displayed. a
display as shown in Figure 4 will
appear or the test will indicate "Failure at Test
_
"followed by a letter between A and Z. If
either is displayed. refer to Section 111-6.
Page 9.
9. The next test is an actual game check to
confirm the functional operation of the Master
Component. When the
title page for Baseball is
displayed. follow the instructions provided with
the MTE-201 Test Cartridge to play 112 inning of
Baseball.
Upon successful completion of the baseball
game. the test routine for the Master Compo-
nent is complete.
10. This Diagnostic Routine can be repeated-
from the beginning-any time . Just press the
RESET button .
-4-

PRELIMINARY CHECKLIST
SECTION II:
Before you refer to the TROUBLESHOOTING
Section which follows, look at this list of pos-
sible quick solutions. Then, if any problem
persists, you should be able to find it in
TROUBLESHOOTING.
Turn ON/OFF Switch to ON and press RESET. With the Test Cartridge still inserted, go through
the DIAGNOSTIC ROUTINE and check for these problems:
PROBLEM POSSIBLE SOLUTION
SCREEN IS BLANK -Press any key on either Hand Controller
key pad to recover picture.
NO TV PROGRAMS - Check connection of cable from Antenna
Switch Box to antenna connector on
TV.
-Make sure
Antenna Switch Box is set at
TV.
-Make sure that coax cable is attached.
BUZZING OR DISTORTED SOUND - Adjust TV fine tuning controls.
-If there is broadcast interference
from a
strong signal, disconnect antenna coax
from Antenna Switch Box. (This must be
reconnected
for broadcast viewing.)
NO GAME SOUND EFFECTS - Turn up TV volume control.
- Adjust fine tuning .
WHITE-GRAY SCREEN
OR SCREEN
IS ONE COLOR -Make sure cartridge is properly inserted.
SNOWY SCREEN (NO
RF CARRIER) -Make sure:
-
TV tuner is set on the proper channel.
-
Antenna Switch Box is set at GAME.
-
Game coax cable is properly plugged into
Antenna Switch Box .
-Power
switch is ON.
-Check all
connections , including power
plug .
TEST
IMAGE NOT DISTINCT ,
AS IF FROM WEAK
SIGNAL - Adjust fine tuning , brightness, and con-
trast
controls .
TEST
IMAGE BLURRED,
-
Check connections at Antenna Switch
Box,
TV antenna connector, and game
output connector.
WOBBLY, OR NO COLOR - Adjust fine tuning, brightness, contrast,
and color.
-
If there is broadcast interference from a
strong signal, di sconnect antenna cable
from Antenna Switch Box . (This must be
reconnected for broadcast viewing.)
-5-

TROUBLESHOOTING
SECTION III
Find the Phrase in the left-hand column below
which best describes the malfunction or con-
dition you encountered. Follow each step of
MALFUNCTION/CONDITION
1. NO TV PROGRAMS,
NO INTELLIVISION TEST PATTERNS,
SNOWY OR WHITE-GRAY SCREEN.
the related
instructions. Then repeat the entire
DIAGNOSTIC ROUTINE as described in
Section I.
SERVICE INSTRUCTIONS
1.0 Verify that TV receiver works.
1.1 Disconnect Antenna Switch Box
assembly and replace with a known good
unit.
1.2 Disconnect Antenna Cable and
replace
with a good one.
1.3 Disassemble Master Component
(See Section IV-A, Page10).
1.4 Unplug Master Component and
check ON/OFF switch for continuity.
1.5 When the Component is dis-
assembled, perform the following test
procedure:
-6-
(a) Carefully remove 5-pin ribbon con-
nector and 2-pin plug from the Power
Supply Board (see Figure 5, Page 8).
(b) Plug in Master Component and turn
ON/OFF Switch to ON.
(e) Connect negative probe of volt-
meter to Ground Test Point on the
Power Supply Board. Connect positive
probe to +5 Volt Test Point. Refer to
Figure 5. Meter should read 4.85-5.15
VDC.
(d) With negative probe still on Ground,
connect positive probe to +12 Volt Test
Point.
Meter should read 11.64-12.36
VDC.
(e) With negative
probe still on Ground,
connect positive probe to +16 Volt Test
Point.
Meter should read at least +16
VDC.
(f) Connect positive probe to ground
and negative probe to -2.1 Volt Test
Point. Meter
should read 1.95-2.25 VDC.
(g) Connect neyative probe to ground
and positive probe to +5.65 volt con-
nector pin. Meter should read at least
12 VDC.

MALFUNCTION/CONDITION SERVICE INSTRUCTIONS
1. CONTINUED ......................... (h) Turn power off. Reconnect 5-pin
ribbon cable and 2-pin plug. Turn
power on and remeasure voltage at
+5.65
volt connector pin. Meter should
read 5.45 -5.85 VDC. If voltage is not
within limits, turn off power and
measure resistance
of R2 (Figure 5).
I ,I I
, . . '
DO NOT CHECK SUPPLY
VOLTAGES AT THE J3 RIBBON
CONNECTOR AS METER PROBES
COULD DAMAGE CONNECTOR
PINS. CHECK VOLTAGES AT
THE TEST POINTS SHOWN IN
FIGURE
5.
-7-
If OK, replace logic board. If not OK,
troubleshoot power supply board.
(i)
If voltages are present, replace the
Logic Board (See Section IV-B, Page
10).
(j) If the abovevoltages are not present,
remove
the 5-pin Transformer Con-
nector from the Power Supply Board.
DO
NOT push meter probes into socket
holes to measure voltage or socket will
be damaged. Touch meter probes to the
slide contacts visible on the top of the
socket to measure voltages. Set meter
on AC, and
check for these voltages:
- With probes in holes #3 and #1, meter should read
7,6 -9.4
VAC RMS.
-
With probes in holes #3 and #2, meter should read
7,6 -9.4
VAC RMS.
-With probes in holes
#4 and #5, meter should read
15,3 -18,7 VAC RMS,
(k) If all voltages read as described in
Step (j), repair or replace the Power
Supply Board (See Section IV-C, Page
12).
(I)
If any voltages differ from the values
in Step (j), replace the Transformer
Assembly (See Section IV-D, Page12).
Verify that replacement of the Trans-
former Assembly and/or Power Supply
Board has corrected any supply volt-
age problem by repeating steps (b)
through (h) above.
If voltages are correct and a known-
good Logic Board has been installed
but symptoms persist, the fault could
be with Power Connector J3 on the
Power Supply Board.

+
---{§]}--
8+
0
~
---<:@D--
---(@D-
--<I@--
-QD--
---oD-
TP1
CI
0
©
~
J3
rn
I OPTIONAL CONFIGURATION
I
GAIO THAU CAll MAY
~ I REPLACE eAg
AI ~~
I -QI}----- I
1- CAIO -- -----@N}-- ~ TP5
L_~~~~~~~ __ ~
-
TP6
Figure 5 Test Points Location Diagram
TP-1 ..................................................... GROUND
TP-2 .................................................. +5V DC TEST
TP-3 ................................................ +12V DC TEST
TP-4 ................................ +16V DC TEST (Non·Regulated)
TP-5 ........................ -2.1V DC TEST (Early Production -3.3V)
TP-6 .................................... +5.65V DC (Non-Regulated)
MALFUNCTION/CONDITION
2. TEST PATTERNS OR GAME
PICTURE JUMBLED, OR UNWANTED
CHARACTERS ON SCREEN
3. NO SOUND OR GARBLED SOUND
4. BAD ON/OFF SWITCH
5. TEST CARTRIDGE DOES
NOT RESPOND TO
HAN D-CONTROLLER (S)
SERVICE
INSTRUCTIONS
2.1 Follow Procedure 1.5 (a) thru (I)
(See
Section" I-I, Page 6).
3.1 Make sure that TV volume is turned
up, and that sounds on broadcast stations
are good.
3.2 Replace Logic Board (See Section
IV-B, Page10).
4.1 Replace Transformer Assembly
(See Section IV-D, Page 12).
5.1 Replace Hand Controllers (See
Section IV-B, Page 10).
5.2 If Procedure 5.1 doesn't cure the
problem, replace Logic Board (See Sec-
tion IV-B, Page 10).
-8-

MALFUNCTION/CONDITION
6. TEST INDICATES FAILURE
IN PARTS OTHER THAN
HAND-CONTROLLERS
7. NO APPARENT FAILURE
- ALL TESTS PASS
SERVICE
INSTRUCTIONS
6.1 Replace Logic Board (See Section
IV-B, Page 10).
7.1 Insert customer's game cartridge in
Component and watch for: mistakes in
lettering on title picture, jumbled play-
field,
or unwanted characters. Test with a
known-good Game Cartridge. If prob-
lems continue, follow Procedure 1.5 (a)
thru (I), Section 111-1, Page 6 . If prob-
lems do not appear,-customer's cartridge
is defective .
7.2 NOTE:
FOLLOW THIS STEP FOR
SHOP SERVICE ONLY:
Insert MTE-201 Test Cartridge and press
Reset. Run
the diagnostic tests until the
television screen shows the title page for
Baseball (the screen will show "Mattei
Electronics presents Baseball"). DO NOT
touch any keys or switches. Disconnect
or turn off the TV set and let the Master
Component burn-in for 90 minutes.
After 90 minutes, re-connect or turn on
the television set. The title page should be
seen on
the television screen. Press Reset
and run
the diagnostic tests and play V2
inning of baseball. If the results again
show no failures, the Master Component
is considered to be GOOD.
IMPORTANT REMINDER
After completing any TROUBLESHOOTING or DISASSEMBLY, always go through the
DIAGNOSTIC ROUTINE described in Section I before reassembling the unit.
8. TEST CARTRIDGE CHECK
8.1 Should you suspect the MTE-201
Test Cartridge to be defective, it can be
tested
as follows: Depress keys 2 and 8
simultaneously when the Hand Controller
Test is displayed (Figure 1) and a check-
sum will be displayed. The display should
look like this:
CART CHECKSUM LO=
00002371677
CART CHECKSUM HI=
00003372642
If any other numbers appear or the num-
bers differ, it indicates a failure in the test
cartridge and another cartridge should be
used.
-9-