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70291301
© Copyright, Alliance Laundry Systems LLC – DO NOT COPY or TRANSMIT
Micro Display Control Troubleshooting
Gas Models
Schematic
TMB1867S
PRIMARY
FUSE
AGC-2A
250V
SECONDARY
FUSE
MDL-3.5A
250V
M
1
VALV
3
GND
3
GND
4
2
GND
TH
M
N
1
AUX
THERM
PROT.
4
MAIN 1
MAIN 2
RUN
FAN MOTOR
CENTRIFUGAL
SWITCH
DOOR
SWITCH
WHT
CHASSIS GROUND
WHT
LINT
PANEL
SWITCH
CABINET
LIMIT
THERMOSTAT
STOVE
LIMIT
THERMOSTAT 1
AIR FLOW
SWITCH
5
RUN
MAIN 2
MAIN 1
4
FAN
MOTOR
THERM
PROT.
AUX
1
ICM
BLK
L1
IGN
RED
LT. BLU
CYLINDER
MOTOR
BLU/BLK
SERVICE
CONNECTION
TB1
BLK
RED
RED/WHT
N.O.
COM
COM
N.O.
BRN/RED
WHT
ORG/BRN
COM
N.O.
ORG
B
RN
ORG/ WHT
WHT/
BRN
BRN/WHT
VLT
VLT
STOVE
LIMIT
THERMOSTAT 2
VLT/WHT
3
5
3
GRY/BLK
BLK
M
5
8
6
9
LT. BLU
BLK/RED
BLK/RED
120V
SERVICE
208-240V
SERVICE
TB1-L1
TB1-N
TB1-L2
N.C.
1
2
1
2
BLK
THERMISTOR
WHT/
BLK
WHT
GAS VALVE
FIRST COIL
SECOND COIL
BA
M
7
4
GRN/YEL
RED/BLU
WHT
RED/WHT
RED/BLK
WHT/VLT
WHT
RED/BLK
RED/BLK
RED
WHT/BLU
SECONDARY
FUSE
1.25 T
250V
RED
RED
WHT
3
4
GRN/YEL
WHT
1
2
3
4
5
6
7
8
9
10
WHT
WHT
THERMISTOR
BLK
WHT
H4
025 & 030 MODELS
035 MODELS
L2
24V
3.5A
120V
24V
1.5A
COIN DROP VEND OPTION
SINGLE, DUAL AND COIN DROP READY
CARD READER READY VEND OPTION
VEND APPLICATION
DETAILS
JUMPERJUMPERJUMPERJUMPER
SWITCHSWITCHSWITCHSWITCH
SERVICE DOORSERVICE DOORSERVICE DOORSERVICE DOOR
BRN
BRN
BRN
BRN
2222
GRY
GRY
GRY
GRY
H5
33
H5H5
33
H5
PNK
PNK
PNK
PNK
5
115
5
115
8
6
4468
8
6
4468
1
0
9
77
9
1010
9
77
9
10
12
1111
1212
1111
12
SWITCH
COIN VAULT
SWITCH
SERVICE DOOR
BRN
GRY
COIN DROP 1
(OPTIONAL)
(OPTIONAL)
COIN DROP 2
PNK
H5
31
5
8
6
4
2
RED
BLK
WHT
BLU
12
11
10
9
7
BLK
WHT
PLEASE CONSULT CARD
READER INSTALLATION
MANUAL FOR PROPER
CONNECTIONS TO CONTROL
4
3
2
1
H6
5
4
7
6
65
1
32
H3
4
12
3
5
4
H6
5
6
7
6
H3
32
1
24Vac Ret
H3-1 & H3-2
Iin= 3-30ma
TIME 20msec MIN.
START PULSE INPUT
MACHINE RUNNING
AVAILABLE OUTPUT
SEE VEND
APPLICATION DETAIL
H2-2
H2-1
FS-2
H1-2
5
1
2
38
6
41
1
10
9
71
2
COIN DROPS
H5
24Vac
H1-4
1
2
3456
7
H6
24Vac Ret
Imax=5ma
H3-3 & H3-4
Vmax=28Vdc
OPTO OFF WHEN
HEAT RELAY
MOTOR RELAY
H2-5
DOOR SENSING CIRCUIT ALLOWS
VOLTAGE CONFIGURATION INPUT
JUMPER H2-2 TO H2-5 AS FOLLOWS:
240Vac - 13.6K ohm 10 watt
CONTROL TO TURN ON MOTOR
RELAY ONLY WHEN DOOR IS
CLOSED & SWITCH IS PRESSED
24Vac - WIRE JUMPER
120Vac - 6.8K ohm 5 watt
MDC CONTROL
CONTROL
POWER
SUPPLY
24VAC
H1-1
H1-3
H11L1
4
6
5
3
21
H3
100 OHM
1/4 watt
4N25
H2-4
H2-3
FS-1
1
H2-6
Door Sense Ret
CIRCUIT CONTROLS
HEAT RELAY
TEMP. REGULATING
10
H4
8
9
74
5
62
3
1. DOOR SWITCH: N.O. CONTACT CLOSED WHEN DOOR CLOSED.
2. MOTORS ARE PROTECTED BY INTERNAL OVERLOADS.
3. THERMOSTAT: OPENS WHEN TEMPERATURE IS REACHED.
4. CONNECT ELECTRICAL SERVICE OF PROPER VOLTAGE
AND CURRENT RATING TO TB1.
NOTES: