Black & Decker English Mark Darts 4500 Series Service Bulletin
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SE W/ICE
Page 1
SERVICE BULLETIN
Concerning 4500 and 6000 Series English Mark Dart Games
February 3, 1987 _.
WARNING--DISCONNECT ELECTRICAL POWER BEFORE ATTEMPTING SERVICE
Due to an error in printed board circuit layout, there is a
problem which may cause short life with the SC146D triac in both
the 4500 and 6000 series game. The error causes the current to
drive the lamp to be supplied from the gate of the triac instead
of the normal terminals. Due to the fact that the device is
considerably oversized, in normal operation (with the 4500) the
gate would handle the current even though the device was electri-
cally mounted on the printed circuit board upside down. T h e
failures were caused when the bulb burns out with the filament
falling across itself shorting and drawing a much higher current.
If the device had been on the board correctly, the 120 amp surge
capability of the triac would have most often saved the device
from failing.
What to do:
The fix for the 4500 and 6000 is basically the same.
1 .
2 .
3 .
4 .
5 .
6 .
7 .
8 .
Unplug the game from the wall outlet1
Remove the power supply from the game.
Turning the power supply over, locate the small printed
circuit board under the chassis.
Remove the board from the chassis by unscrewing three
mounting screws.
The triac is held to the board with one screw and nut.
Remove screw and carefully unsolder the triac from PC
b o a r d .
Reinstall the triac in the same location but on the
opposite side of the board. You must use an insulator
(fig. 1) since the metal tab of the triac is now being
mounted on the foil side of the board. Resolder triac
and reinsert screw and nut.
Reinstall PC board into chasis with three screws being -
very careful not to pinch any wires as you are tightening
t h e m .
Place power supply back into cabinet, attach plugs from
wire harnesses, fasten down with screws, and plug into
wall outlet.
C o n t .
Page 1
SERVICE BULLETIN
Concerning 4500 and 6000 Series English Mark Dart Games
February 3, 1987 _.
WARNING--DISCONNECT ELECTRICAL POWER BEFORE ATTEMPTING SERVICE
Due to an error in printed board circuit layout, there is a
problem which may cause short life with the SC146D triac in both
the 4500 and 6000 series game. The error causes the current to
drive the lamp to be supplied from the gate of the triac instead
of the normal terminals. Due to the fact that the device is
considerably oversized, in normal operation (with the 4500) the
gate would handle the current even though the device was electri-
cally mounted on the printed circuit board upside down. T h e
failures were caused when the bulb burns out with the filament
falling across itself shorting and drawing a much higher current.
If the device had been on the board correctly, the 120 amp surge
capability of the triac would have most often saved the device
from failing.
What to do:
The fix for the 4500 and 6000 is basically the same.
1 .
2 .
3 .
4 .
5 .
6 .
7 .
8 .
Unplug the game from the wall outlet1
Remove the power supply from the game.
Turning the power supply over, locate the small printed
circuit board under the chassis.
Remove the board from the chassis by unscrewing three
mounting screws.
The triac is held to the board with one screw and nut.
Remove screw and carefully unsolder the triac from PC
b o a r d .
Reinstall the triac in the same location but on the
opposite side of the board. You must use an insulator
(fig. 1) since the metal tab of the triac is now being
mounted on the foil side of the board. Resolder triac
and reinsert screw and nut.
Reinstall PC board into chasis with three screws being -
very careful not to pinch any wires as you are tightening
t h e m .
Place power supply back into cabinet, attach plugs from
wire harnesses, fasten down with screws, and plug into
wall outlet.
C o n t .
Page 2
Fig. 2 and 3 show before and after for the printed circuit board
for the 4500: fig. 4 and 5 show the 6000.
Remember, you are working with 120 volts AC circuitry. If there
are any questions, please call before attempting this
modification. This modification should only be attempted by
qualified technicians.
ARACHNID, INC.
Gene Harlan
Chief Engineer ,.
Fig. 1, Mica Insulator
Fig. 2, 4500 Series Before Modification
Top Side of Board
Fig. 3, 4500 Series After Modification
Bottom Side of Board
Fig. 4, 6000 Series Before Modification
Top Side of Board
Fig. 5, 6000 Series After Modification
Bottom Side of Board
Fig. 2 and 3 show before and after for the printed circuit board
for the 4500: fig. 4 and 5 show the 6000.
Remember, you are working with 120 volts AC circuitry. If there
are any questions, please call before attempting this
modification. This modification should only be attempted by
qualified technicians.
ARACHNID, INC.
Gene Harlan
Chief Engineer ,.
Fig. 1, Mica Insulator
Fig. 2, 4500 Series Before Modification
Top Side of Board
Fig. 3, 4500 Series After Modification
Bottom Side of Board
Fig. 4, 6000 Series Before Modification
Top Side of Board
Fig. 5, 6000 Series After Modification
Bottom Side of Board
SERVICE INFORMATION
CONCERNING THE 6000 SERIES GAME
3-26-87
To update the 6000 series game to use the shorter 5 l/2” T-10 40 watt lamps instead of the 11 112” T-8 40 watt
lamps, you will need to do the following: d.
WARNING: UNPLUG THE GAME FROM THE WALL OUTLET BEFORE SERVICING!!!
1. Move the (2) lamp sockets located on the sides down to the lower end of the shadow box. The crimp-on
cormectors will have to be removed by cutting as close as possible to the connector located inside the back of
the game Wire nuts will be used to refasten these wires. The socket will bc pointing up instead of down. The
screw for the socket should be located about one inch up from the lower edge A new hole will have to be
drilled into the back panel for the wires. This can be done from the back of the game (plan ahead to get the
holes in the right spot). The Arachnid part number on this lamp is 11-0007.
2 . Aluminum reflective foil with adhesive back (commonly available from an automotive supply store) MUST
be installed between the lamp and the wood shadow box for two reasons:
A: HEAT - The tape spreads the heat and protects the wood.
B: LIGHT - It reflects the light giving twice the illumination on the target as compared to the
long bulbs without the foil.
The foil that WC arc using is 2 S/8” x 9” and is bent into an “L” (the long direction) before inserting in the
shadow box. TUG part number from Arachnid for the foil is 13-0069.
Although the short bulbs can be installed without moving the sockets down, the aluminum tape MUST bc
used due to the increased heat of the shorter bulb. Moving the sockets down helps to distribute the light more
evenly.
If there are any questions concerning this update, please call l-800-435-8319 (in Illinois l-815-654-0212).
Gcnc I I;trl;1n
Chief EnFinccr
The Originator of Electronic Darts
CONCERNING THE 6000 SERIES GAME
3-26-87
To update the 6000 series game to use the shorter 5 l/2” T-10 40 watt lamps instead of the 11 112” T-8 40 watt
lamps, you will need to do the following: d.
WARNING: UNPLUG THE GAME FROM THE WALL OUTLET BEFORE SERVICING!!!
1. Move the (2) lamp sockets located on the sides down to the lower end of the shadow box. The crimp-on
cormectors will have to be removed by cutting as close as possible to the connector located inside the back of
the game Wire nuts will be used to refasten these wires. The socket will bc pointing up instead of down. The
screw for the socket should be located about one inch up from the lower edge A new hole will have to be
drilled into the back panel for the wires. This can be done from the back of the game (plan ahead to get the
holes in the right spot). The Arachnid part number on this lamp is 11-0007.
2 . Aluminum reflective foil with adhesive back (commonly available from an automotive supply store) MUST
be installed between the lamp and the wood shadow box for two reasons:
A: HEAT - The tape spreads the heat and protects the wood.
B: LIGHT - It reflects the light giving twice the illumination on the target as compared to the
long bulbs without the foil.
The foil that WC arc using is 2 S/8” x 9” and is bent into an “L” (the long direction) before inserting in the
shadow box. TUG part number from Arachnid for the foil is 13-0069.
Although the short bulbs can be installed without moving the sockets down, the aluminum tape MUST bc
used due to the increased heat of the shorter bulb. Moving the sockets down helps to distribute the light more
evenly.
If there are any questions concerning this update, please call l-800-435-8319 (in Illinois l-815-654-0212).
Gcnc I I;trl;1n
Chief EnFinccr
The Originator of Electronic Darts
SERVICE BULLETIN
Concerning 6000 Series English Rark Dart Gases
June 6, 1988
WARNING--DISCONNECT ELECTRICAL POWER BEFORE ATTEBPTING SERVICE
A problem has arisen concerning the location rhere the target inter-
face board ribbon cable connects into the sain P.C.board on the 6000
and Super 6 Plus games. Apparently, the trace that runs the control-
ling voltage for the target lasps is located directly beneath the
area where this ribbon cable Is plugged in. There is a thin coating of
insulating film covering this trace, but after a period of tiae this
coating can rear off, leaving the copper trace exposed. Due to the
construction of the Target Interface ribbon cable, vhen the coating is
no longer present, the rav edges of the ribbon say make contact vith
this copper trace, vhich can cause target lamp flicke'ring, sinulate a
stuck segment, or simulate a throvn dart. A stuck segment simulation
locks up the gaee if the ribbon sakes constant contact, but sany tises
the ribbon vi11 short momentarily vhen a vibration occurs to the P.C.
board, such as vhen throving a dart or touching the Select or Player
Change buttons. This type of short say result In the game shoving an
extra dart throvn In a round, or the gase nay reset during play.
What to do:
1. Turn off gane, and unplug fros wall outlet!
2. Disconnect the ribbon cable casing from the
T.I.board to the main P.C.board.(see fig.11
3. Locate the trace that runs belov the ribbon
connector.(see fig.11
4. Using a piece of electrical tape, cover the
trace completely at the connector location,
and fold tape down over the P.C. board edge
(to keep connector from catching on tape).
5. Re-insert the ribbon cable into the header
on the main P.C.board.
6. Plug game into the vail, and turn it on.
7. When servicing the game in the future,
periodically check the placement of the
tape, to be sure it has not shifted.
FIG.1
If there are any questions regarding this or any other service problem,
please call ARACHNID, INC. at 800-435-8319 (in Illinois; 815-654-0212).
ARACHNID. INCfi
Connie Reece
Design Engineering Tech.
Concerning 6000 Series English Rark Dart Gases
June 6, 1988
WARNING--DISCONNECT ELECTRICAL POWER BEFORE ATTEBPTING SERVICE
A problem has arisen concerning the location rhere the target inter-
face board ribbon cable connects into the sain P.C.board on the 6000
and Super 6 Plus games. Apparently, the trace that runs the control-
ling voltage for the target lasps is located directly beneath the
area where this ribbon cable Is plugged in. There is a thin coating of
insulating film covering this trace, but after a period of tiae this
coating can rear off, leaving the copper trace exposed. Due to the
construction of the Target Interface ribbon cable, vhen the coating is
no longer present, the rav edges of the ribbon say make contact vith
this copper trace, vhich can cause target lamp flicke'ring, sinulate a
stuck segment, or simulate a throvn dart. A stuck segment simulation
locks up the gaee if the ribbon sakes constant contact, but sany tises
the ribbon vi11 short momentarily vhen a vibration occurs to the P.C.
board, such as vhen throving a dart or touching the Select or Player
Change buttons. This type of short say result In the game shoving an
extra dart throvn In a round, or the gase nay reset during play.
What to do:
1. Turn off gane, and unplug fros wall outlet!
2. Disconnect the ribbon cable casing from the
T.I.board to the main P.C.board.(see fig.11
3. Locate the trace that runs belov the ribbon
connector.(see fig.11
4. Using a piece of electrical tape, cover the
trace completely at the connector location,
and fold tape down over the P.C. board edge
(to keep connector from catching on tape).
5. Re-insert the ribbon cable into the header
on the main P.C.board.
6. Plug game into the vail, and turn it on.
7. When servicing the game in the future,
periodically check the placement of the
tape, to be sure it has not shifted.
FIG.1
If there are any questions regarding this or any other service problem,
please call ARACHNID, INC. at 800-435-8319 (in Illinois; 815-654-0212).
ARACHNID. INCfi
Connie Reece
Design Engineering Tech.
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