Andamiro HAMMER DX, Service Manual

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CHECK POINTS IN CASE OF NO VIDEO AND NO SOUND
CHECK POINTS IN CASE OF NO VIDEO
7. TROUBLE SHOOTING
Problem priority STEP 1 STEP 1
No sound &
no picture
No picture
No sound
COIN MECH
PROBLEM
1 Check the voltage status of input VAC
If it is no voltage, check the fuse and the disconnection of AC
cord
2
3
4
Check AC lamp in the billboard cabinet
If it is O.K., the input VAC and the power until the transformer
is in a good condition.
Mesure the input VAC of the transformer
If the input VAC is 110V or below 120V, change the 120V
line of the input VAC to 110V line
Check whether the LED of the SMPS is flickering at blue color
and measure the input VAC of power SMPS If the output VDC of the power SMPS are over or below 12V
and 5V, adjust them with the voltage controller of SMPS.
5
Check the input VDC of the main PCB and check out the input
VDC after separating JAMMA connector from the main PCB
a) If the input VDC does not keep the regular voltages (12V and 5V)
and b) if the input VDC keeps the regular value after disconnecting
JAMMA, replace the main PCB.
1 Measure the input VAC voltage of the transformer
If the input VAC is 110V or below 120V, change the 120V line of
the input VAC to 110V line
2
Check the sound of the high voltage part of the monitor board
when the machine is ON.
In case of no sound, the monitor board is defective. Try turn on the
machine 20 minites after power off because the protector circuit is
under working. If still no sound, replace the monitor board
3
Slightly turn right the screen volume in the high voltage part of
the monitor board and see if there is white lines on the screen. If there is white lines, the main PCB is deffective. If not, the monitor
board is deffective.
4
Check whether the LED of the SMPS is flickering at blue color
and measure the input VAC of power SMPS If the output VDC of the power SMPS are over or below 12V and
5V respectively, adjust them with the voltage controller of SMPS.
5
In case of the picture noise, repalce the main PCB.
After replacing the main PCB, there is still the picture noise, check
again the output VDC.
1 Mesure the input VAC of the transformer
If the input VAC is 110V or below 120V, change the 120V line of
the input VAC to 110V line
2
Check whether the LED of the SMPS is flickering at blue color and
measure the input VAC of power SMPS If the output VDC of the power SMPS are over or below 12V and
5V respectively, adjust them with the voltage controller of SMPS.
3
Check the sound wire, and maximize the volume of the main PCB
and check the sound in adjusting the volume by the front volume
controller
If the noise happens in adjusting the volume by the front volume
controller, replace the main PCB.
4
check the input VDC of the main PCB and check out the input
VDC after separating JAMMA connector from the main PCB
1
In case of the mechanic COIN mech, check the MICRO SWITCH. In case of the electronic coin mech check the VDC(YELLOW
LINE=VDC 12V, BLACK LINE=GND, WHITE=SIGNAL).
2
As a next step, check all the connectors.
3
check the input VDC of the main PCB and check out the input
VDC after separating JAMMA connector from the main PCB
a) If the input VDC does not keep the regular voltages(12V and
5V) AND b) if the input VDC keeps the regular value after
disconnecting JAMMA, replace the main PCB.
a) If the input VDC does not keep the regular voltages (12V and 5V)
AND b) if the input VDC keeps the regular value after disconnecting
JAMMA, replace the main PCB.
1) VDC : DC Voltage on SMPS
2) VAC: AC Voltage
3) Voltage setting status at the factory
The input VAC to the transformer is 120V which is USA regular voltage. the outpout VAC from the
transformer is 220V
If the AC voltage in the location is around 110V, the output VAC from the transformer is below
220V. To make 220V, change the 120V line of the input VAC to the 110V line. If the AC voltage in
the location is around 90V, change the 120V line of the input VAC to the 90V line
note
7-1
7-2
CHECK POINTS IN CASE OF NO SOUND
7-3