1
PRECAUTIONS TO BE OBSERVED BEFORE AND
DURING SERVICING TO AVOID
POSSIBLE EXPOSURE TO EXCESSIVE
MICROWAVE ENERGY
(a) Do not operate or allow the oven to be operated with door open.
(b) Make the following safety checks on all ovens to be serviced before activating the magnetron or other
microwave source, and make repairs as necessary : (1) Interlock operation, (2) proper door closing, (3)
seal and sealing surfaces (arcing, wear, and other damage), (4) damage to or loosening of hinges and
latches (5) evidence of dropping or abuse.
(c) Before turning on microwave power for any service test or inspection within the microwave gernerating
compartments, check the magnetron, wave guide or transmission line, and cavity for proper alignment,
intergrity, and connections.
(d) Any defective or misadjusted components in the interlock, monitor, door seal, and microwave gernera-
tion and transmission systems shall be repaired, or adjusted by procedures described in this manual
before the oven is released to the owner.
(e) A micrewave leakage check to verify compliance with the Federal Performance Standard should be per-
formed on each oven prior to release to the owner.
PROPER USE AND SERVICE PRECAUTIONS..................................................................................................... 2
SPECIFICATIONS.................................................................................................................................................... 3
FEATURES DIAGRAM ............................................................................................................................................ 4
EARTHING INSTRUCTIONS................................................................................................................................... 5
INSTALLATION ........................................................................................................................................................ 5
OPERATION PROCEDURE .................................................................................................................................... 6
CONTROLS.............................................................................................................................................................. 7
INTERLOCK MECHANISM FUNCTIONS AND ADJUSTMENTS .......................................................................... 19
MEASUREMENT OF THE MICROWAVE OUTPUT POWER................................................................................ 21
WIRING DIAGRAM .................................................................................................................................................. 22
CIRCUIT DESCRIPTION ......................................................................................................................................... 23
SAFETY PRECAUTIONS FOR DISASSEMBLY AND REPAIR ............................................................................. 26
DISASSEMBLY AND ASSEMBLY........................................................................................................................... 27
TROUBLE SHOOTING GUIDE................................................................................................................................ 32
COMPONENT TEST PROCEDURE ....................................................................................................................... 39
SAFETY INTERLOCK CONTINUITY TEST ............................................................................................................ 40
PRINTED CIRCUIT BOARD .................................................................................................................................... 41
CIRCUIT CHECK PROCEDURE ......................................................................................................................... 41
P.C.B. CIRCUIT DIAGRAM.................................................................................................................................. 46
COMPONENT INFORMATION............................................................................................................................ 47
PRINTED CIRCUITS BOARD.............................................................................................................................. 48
P.C.B. LOCATION NO ......................................................................................................................................... 49
EXPLODED AND PARTS LIST ............................................................................................................................... 50
TABLE OF CONTENTS
Summary of Contents for KOR-612L0S
Page 44: ...Fig 6 Measurement Point 43...
Page 47: ...46 2 P C B CIRCUIT DIAGRAM L type...
Page 48: ...47 3 COMPONENT INFORMATION 1 Transistor 2 Diode and Zener Diode...
Page 49: ...48 4 PRINTED CIRCUITS BOARD...
Page 53: ...52 EXPLODED VIEW...
