Monogram ZV1050 Manual

CAUTION
WARNING
• DISCONNECT POWER BEFORE
SERVICING
• "DO NOT TOUCH" ELECTRICAL
OR UNGROUNDED METAL
PARTS WHILE SERVICING WITH
POWER CONNECTED.
SERVICE DIAGNOSTIC FLOW CHART
NO
RED DISPLAY
NO YES
LIGHT
BLINKING?
REMOVE/
RE-SEAT
RIGHT
FILTER
YES FAN NO
OK?
YES FAN BLADES NO
BLOCKED?
FIX/
ORDER INSPECT
MOTOR PCB IN
BLACKBOX
YES LIGHTS NO
NOTE #1
OK?
HOOD
DONE
NO YES
LIGHTS
FLICKERING?
NO
YES HOOD
OK?
CHECK/MODIFY
TRIAC
CONNECTIONS
DONE
HOOD
ORDER/INSTALL
NO YES
LIGHTS
ENTRY/DISPLAY
FLICKERING?
ASSEMBLY
& CONTROL
LIGHTS
PCBS
YES NO
ALWAYS
ON?
REMOVE ORDER/INSTALL
CONTROL
TRIAC
PCBS
ORANGE
YES LIGHTS NO
LEAD
ON?
ORDER/
INSTALL
TRIAC
Note #1 – Check parts in the blackbox as follows:
All six connectors are locked in place and no leads are broken.
Connector solder joints are not broken on PCB copper side.
Fuses are OK.
Capacitors (25uF 250V AC); Check that cap is not open or shorted by using VOM.
Pub. No. 31-20787 164D3747P087
• T E C H N I C A L D A T A S H E E T •
NO YES
PUSH BUTTONS STUCK?
UNSTICK/ADJUST
NOTE #2
NO YES
PUSH BUTTONS STUCK?
ORDER/INSTALL
ENTRY/DISPLAY
SUBASSEMBLY
YES •TURN HOUSE CIRCUIT NO
HOOD CONTROL
BREAKER OFF, THEN ON
DEAD?
•IS CONTROL OPERATION
OK?
YES
DONE
RED DISPLAY
YES
BLINKING?
INSPECT
PCB IN
YES
CHECK IF 120V AC IS
ORDER
BLACKBOX
PRESENT AT MOTOR
MOTOR
NOTE #1
TERMINAL BLOCK
NO
(IN LEFT BLACK BOX)
NO
YES HOOD NO
OK?
NO
FIX
DONE
WIRING
ORDER/INSTALL
DONE
ENTRY/DISPLAY
ASSEMBLY
YES
& CONTROL
PCBS
= ~
120V AC
ORDER/
YES AT NO
INSTALL YES
TRANSFORMER
TRANSFORMER
PRIMARY?
FIX
NO
WIRING
DONE
Note #2 – Check for button protrusion through
the hood holes and that buttons have
"movement".
WARNING
POWER MUST BE DISCONNECTED
BEFORE SERVICING THE APPLIANCE
CONTROL PCB
CN1
CN2 CN3 CN5
LINE
GND
120V
AC
REMOVE NEUT.
RIGHT
FILTER
WHITE
BLACK
ORANGE
M
CHECK/ADJUST
BLUE
MICROSWITCH
NO
LIGHT
RED
BROWN
RED DISPLAY
YES
LIGHT
BROWN
BLINKING?
WHITE
= ~ BLACK
120V AC YES
AT HOOD?
ORANGE
M
BLUE
RED
= ~
12V AC
AT CONNECTOR NO HOOD SCHEMATIC
(CN4B) IN
BLACKBOX?
FUSES IN
NO
BLACKBOX
OK?
REPLACE
YES
UNIT NOW
OK?
DONE
SCHEMATIC DIAGRAM
TRANSFORMER 5A125V - 5X20MM
BLACK
FUSES
BROWN
120V
WHITE
12 VAC
BLUE
CN2 CN4B
BLACK
LOW VOLTAGE
POWER SUPPLY
GREEN
WHITE
CN1
MICROPROCESSOR
WHITE
MOTOR
BLACK
CIRCUIT
ORANGE
RELAYS
BLUE
RED
BROWN
CN3 CN5
WHITE
µ
25 F
µ
25 F
250V AC
250V AC
(2) MOTOR
CAPACITORS
ZV1050
ISOLATED
TRIAC
A1
BROWN
A2
(2) BLUE
G
BROWN
ORANGE
2 LAMPS
12V AC
20W
2 LAMPS
WHITE
12V AC
20W
RED
FILTER
MICRO-
SWITCH