Kuppersbusch EMWK 870.1 User manual

GB
Microwave
EMWK 870.1

Service Manual: H4-70-02-02
Responsible: D. Rutz KÜPPERSBUSCH HAUSGERÄTE AG
Email: [e-mail]
Tel.: [phone] Kundendienst
Fax: [phone] Postfach 100 132
Date: 17.09.2001 45801 Gelsenkirchen

Service Manual EMWK 870.1 3
For internal use only
Table of Contents
1. Safety Information .......................................................................................................... 4
2. Control............................................................................................................................. 5
2.1 Control Panel Fascia ............................................................................................. 5
2.2 Set Time ................................................................................................................ 5
2.3 Microwave-Only Mode........................................................................................... 6
2.4 Convection-Only Mode.......................................................................................... 6
2.5 Minute Minder........................................................................................................ 6
2.6 Baking with microwave.......................................................................................... 7
2.7 Memory ................................................................................................................. 7
3. Test Procedures ............................................................................................................. 8
3.1 Function Test......................................................................................................... 8
3.2 Test Procedure Indication Test ............................................................................. 8
3.3 Terminate Test Procedure..................................................................................... 9
3.4 Fault Indications .................................................................................................... 9
4. Trouble Shooting Procedure ....................................................................................... 10
5. Specifications ............................................................................................................... 11
6. Wiring diagrams and legend ....................................................................................... 12

4 Service Manual EMWK 870.1
For internal use only
1. Safety Information
The purpose of this Service Manual is to supply service technicians who already possess the required
technical knowledge for the repair of microwave equipment-specific information on the manner of
functioning of the EMWK 870.0.
This manual covers all equipment-specifications relevant for this type.
Descriptions and manners of functioning of the components already known are therefore disregarded in
this issue.
Warning!
Improper repairs can cause danger and damage for the user!
To avoid electric shock be sure to heed the following safety information:
♦In case of malfunction, cabinet and frame could be live!
♦Do not touch any components in the microwave, also modules can carry mains voltage!
♦Always disconnect the microwave from power before starting with the repair!
♦Always use a fault current breaker when ’live’ testing with components under a high potential!
♦The ground-lead connection must not exceed the standardized values! It is of decisive importance
for the safety of persons and the function of the equipment!
♦On completion of the repair work, carry out a test according to VDE 0701 or equivalent country-
specific regulation!
♦On completion of the repair work, carry out a function test!
♦On completion of the repair work, carry out a RF-leakage check!
To avoid damage to the microwave or the components, be sure to heed the following warnings:
♦Heed EGB instructions!
♦Never attempt repair by indiscriminate exchange of components!
♦Always proceed sytematically and follow the troubleshooting instructions!
♦Do not make any measurements in the high voltage circuit with the microwave oven in operation.
Danger to life!

Service Manual EMWK 870.1 5
For internal use only
2. Control
2.1 Control Panel Fascia
2.2 Set Time
1. Press CLOCK key.
2. Set the desired time via knob.
Display
h = hours
min. = minutes
sec. = seconds
Keys for
cooking power
Clock key
Timer key
Convection key
for setting convection time
Stop key
for cancelling wrong entries
Combi key
for setting combi cooking
Memo key
Start key
Knob
Function selector
! oven light
$ top/bottom heat
* flush-mounted grill
# hot air
0 circulating air
Temperature selector
with display lamp 50 - 250 °C
Grilling stages
* low
** medium
*** high