Sanyo EM-CD2900UK - User Manual

To Next Page

(a)Do



not



operate



allow



the



oven



operated



with



the



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generating

compartments,checkthemagnetron,waveguideortransmissionline,andcavityforproperalignment,

integrity,andconnections.

(d)Anydefectiveormisadjustedcomponentsintheinterlock,monitor,doorseal,andmicrowavegeneration

generationandtransmissionsystemsshallberepairedreplaced,oradjustedbyproceduresdescribe

inthismanualbeforetheovenisreleasedtotheowner.

REFERENCENO.REFERENCENO.

REFERENCENO.SM‑6310034‑00

ForewordForeword

Foreword

ReadRead

Read





thisthis

this





manualmanual

manual





carefully,especiallycarefully,especially

carefully,especially





precautionprecaution

precaution





on microwave energy,andon microwave energy,and

on microwave energy,and





followfollow





thethe

the





procedureprocedure

procedure

strictly,carelessstrictly,careless

strictly,careless





servicingservicing

servicing





andand

and





testingtesting

testing





maymay

may





exposeexpose

expose





yourselfyourself

yourself





toto





thethe

the





microwavemicrowave

microwave





energyenergy

energy





leakage.leakage.

leakage.

Pro.CodeNo.ModelNo.

43764400EM‑CD2900UK

EM‑CD2900(UK)EM‑CD2900(UK)

EM‑CD2900(UK)

SERVICESERVICE

SERVICE





MANUALMANUAL

MANUAL





RoHSRoHS

RoHS

ThisproductdoesnotcontainanyhazardoussubstancesprohibitedbytheRoHSDirective.

(YouwillfindRorZatthelastdigitofserialnumberoraRSFlabelneartheratingplateon

theRoHScomplaintproduct.)





WARNINGWARNING

WARNING

YouarerequestedtouseRoHScompliantpartsformaintenanceorrepair.

Youarerequestedtouselead‑freesolder.

PRECAUTIONSPRECAUTIONS

PRECAUTIONS

PRECAUTIONSPRECAUTIONS

PRECAUTIONS





TOTO





BEBE





OBSERVEDOBSERVED

OBSERVED





BEFOREBEFORE

BEFORE





ANDAND

AND





DURINGDURING

DURING





SERVICINGSERVICING

SERVICING





TOTO





AVOIDAVOID

AVOID





POSSIBLEPOSSIBLE

POSSIBLE

EXPOSUREEXPOSURE

EXPOSURE





TOTO





EXCESSIVEEXCESSIVE

EXCESSIVE





MICROWAVEMICROWAVE

MICROWAVE





ENERGYENERGY

ENERGY

COMMERCIALCOMMERCIAL

COMMERCIAL





USEUSE

USE





COMBINATIONCOMBINATION

COMBINATION

MICROWAVEMICROWAVE

MICROWAVE





OVENOVEN

OVEN

Main Page

Need help?

Do you have a question about the Sanyo EM-CD2900UK and is the answer not in the manual?

This document is a service manual for the SANYO EM-CD2900 (UK) Commercial Use Combination Microwave Oven. It provides detailed information for authorized service personnel regarding adjustment procedures, specifications, power output measurement, precautions, repair tips, control panel operation, circuit diagrams, troubleshooting, disassembly instructions, exploded views, and parts lists.

Function Description

The SANYO EM-CD2900 (UK) is a commercial-use combination microwave oven designed for various cooking modes including microwave, oven (conventional heating), and grill. It features a digital electric timer and an oven temperature control for precise cooking. The combination mode allows for simultaneous use of oven and microwave, or grill and microwave. Safety features include thermal protectors for the magnetron and cavity, a cartridge-type fuse, a thermistor, and multiple interlock switches (primary, door sensing, and interlock monitor) to prevent operation with the door open or if safety mechanisms are compromised. The oven is equipped with a control panel for programming and selecting cooking modes and times.

Important Technical Specifications

Rated Power Consumption:
- Microwave: 1200W
- Heater: 1300W
- Combi (Combination): 2500W
Microwave Output: 800W
Frequency: 2,450MHz ± 50MHz
Power Supply: 230V, 50Hz
Rated Current (After 15 mins.):
- Microwave: 5.5 ± 10% Amps
- Heater: 5.6 ± 10% Amps
- Combi: 11.0 ± 10% Amps
Safety Devices:
- Thermal Protector for Magnetron: Opens at 140°C
- Thermal Protector for Cavity: Opens at 195°C
- Fuse: Cartridge Type 15A
- Thermistor
- Primary Interlock Switch
- Door Sensing Switch
- Interlock Monitor Switch
Timer: Electric Digital (Combi, Micro 20min; Grill 10min)
Oven Temperature Control: Heater 150°C-250°C; Combi 150°C-250°C
Overall Dimensions: 520 (W) x 460 (D) x 313 (H) mm
Oven Cavity Size: 330 (W) x 330 (S) x 165 (H) mm
Effective Capacity of Oven Cavity: 19.0 liters
Net Weight: 29.5 kg

Usage Features

The oven control panel provides a user-friendly interface for various cooking operations:

Programmable No. plus Ten key (+10): For setting program numbers from 10 to 49.
Program Selection Keys (Ten key 0-9): Used to program heating time. The selected time is displayed and counts down during operation. Also used for determining power output and cooking time during programming.
Combination Key: Selects combination mode (Oven + Microwave or Grill + Microwave).
Microwave Key: Selects microwave mode.
Oven Key: Selects oven mode.
Grill Key: Selects grill mode.
Auto-Preheat Key: Selects preheat mode, maintaining the oven cavity at a set temperature.
Memory Key (M): Used for inputting data for program cooking.
Clear Key (C): Cancels settings, interrupts the setting process, or stops cooking.
Start Key: Initiates timer cooking, restarts cooking, or restarts after preheat.
Lamp Key: Turns the interior lamp on (lights automatically for five seconds).
Set Key: Decides input content and starts the next input process.
Control Knob: Used to select oven temperature, microwave power, and cooking time.
Display: Shows cooking time, oven temperature, microwave power levels, programming number, stage heating indicator, and heat mode indicator. A maintenance sign indicates when accumulative cooking time reaches 1,250 hours.

Maintenance Features

The manual outlines several maintenance and repair procedures, emphasizing safety precautions, especially regarding microwave energy leakage and high voltage.

Adjustment Procedures: Detailed steps for adjusting primary interlock switch, interlock monitor switch, and door sensing switch to prevent microwave energy leakage. These adjustments must be performed by authorized service personnel.
Microwave Power Output Measurement: A standardized procedure using a water load to verify correct power output.
Precautions and Repair-Service Tips: Highlights the presence of nearly 4,000 volts in some circuits and the need for extreme care during repair. Emphasizes checking interlock mechanisms, door integrity, and microwave generating components.
Troubleshooting Guide: Provides a systematic approach to diagnose common problems such as no display, cooking not starting, oven not heating, low microwave power output, magnetron operating at high level when low power is selected, and buzzing issues. It includes checkout procedures for components like magnetron, high-voltage transformer, capacitor, diode, fuse diode, touch keyboard, thermistor, and heaters.
Error Indication: Explains error codes (E-12, E-21, E-31, E-32, E-22, U-50) displayed for self-diagnosis, indicating issues like microwave relay welding, thermistor malfunctions, heater relay welding, or memory cooking unavailability.
Disassembly Instructions: Step-by-step guides for removing the cabinet, primary interlock switch, interlock monitor and door sensing switch, fuse, control circuit board, touch key board and time controller, ceramic tray assembly, magnetrons, power supply cord, and heaters. Specific warnings are given for handling the magnetron and high-voltage components.
Parts Replacement: Recommends replacing consumable components at specific intervals (e.g., magnetron tube, printed circuit board-relay, switch base assembly, door latch after 1,250 hours of accumulated cooking time or 200,000 door open/close cycles; blower motor and door hinge after 2,000 hours). It specifies using only manufacturer-specified parts for components critical to microwave leakage.
RoHS Compliance: States that the product does not contain hazardous substances prohibited by the RoHS Directive and requests the use of RoHS compliant parts and lead-free solder for maintenance and repair.