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Part # MCOSM06 Rev 1 (11/03/08) Page 93
Page 7 of 9
1-800-427-6668 www.garland-group.com Fax: 1-800-361-7745
From: Parts and Service Division Date: September 25, 2001
To: All Authorized Service Agencies
SUBJECT: Convection Oven Keypad Test Points
Models Affected: Garland convection ovens with 300, 410, 450, 455, 470,
475 Controls.
US Range convection ovens with 30, 41, 45, 45+ controls.
There have been a large number of keypads returned as failed to Garland under warranty. A large
number of those returned and tested showed no faults.
The attached test points are a useful service tool to better determine if the problem is with the keypad,
controller, relay board assembly or other.
The attached pages shows the PIN-OUT test points for the keypad used on the above Garland & US
Range convection ovens.
When servicing a unit with reported erratic or non-responsive controls, test the keypad first.
NOTE: Consult operations manual to confirm unit is in normal operations mode.
I.e. “unit will not turn off”. Unit will not go to OFF mode until oven cavity temperature
drops below 150°F. This is a normal operation of the controller in the auto cool down
mode.
BULLETIN B-107-2001