Midea TJE17GS7-S00N0A User manual

Commercial
High Speed Oven
SERVICE MANUAL
TJE17GS7-S00N0A
Oven Capacity: 18 Liter
208/240v~ 60hz, 6000w

CONTENTS
1. GENERAL INFORMATION................................................................................... 1
2
7
16
22
36
41
3. DIAGNOSTICS.........................................................................................................
5. REPLACING COMPONENTS............................................................................
6. CIRCUIT DIAGRAMS AND BOARDS............................................................
7 COMMISSIONING THE APPLIANCE..............................................................
4. SAFE WORKING WHEN TESTING COMPONENTS................................
2. HAZARDS AND SAFETY PRECAUTIONS...................................................
1.1 Purpose of this chapter........................................................................................................................
1.2 Equipment details Generic................................................................................................................
1.3 Important Information.........................................................................................................................
1.4 Structure of technical documentation.........................................................................................
1.5 About this Service Manual.................................................................................................................
2.1 Hazards and safety precautions during installing...................................................................
2.2 Hazards and safety precautions during servicing and repair...........................................
2.3 Hazards and safety precautions when taking the appliance out of service..............
3.1 Checking the condition of your appliance..................................................................................
3.2 Fault finding............................................................................................................................................
4.1 Electrically live components.............................................................................................................
4.2 Moving heavy loads.............................................................................................................................
4.3 Sharp-edged sheet-metal parts.....................................................................................................
4.4 Hot surfaces............................................................................................................................................
4.5 Live components..................................................................................................................................
4.6 Microwave emissions..........................................................................................................................
4.7 Fire / smoke in the appliance..........................................................................................................
4.8 Requirements.........................................................................................................................................
4.9 Testing selected components (casing mounted)...................................................................
4.10 The key components (casing removed)...................................................................................
4.11 Mains voltage components (casing removed)........................................................................
5.1 Safe working when replacing appliance parts..........................................................................
5.2 Parts and their function.....................................................................................................................
5.3 Overview..................................................................................................................................................
5.4 Removing / fitting the casing.........................................................................................................
6.1 SRB / QTS circuit boards...................................................................................................................
6.2 TFT Driver Board..................................................................................................................................
6.3 Circuit diagrams....................................................................................................................................
7.1 Recommission Test: Recommissioning the appliance after service/repair...................
1
1
5
7
16
28
36
40
41
38
25
24
22
20
19
18
18
18
17
17
17
16
16
10
3
2
1
1
1

1.3 Important Information
1.4 Structure of technical documentation
1.5 About this Service Manual
1.2 Equipment details Generic
User Manual
Service Manual (this document)
The technical documentation for the microwave oven includes the following
documents:
This Service Manual is intended for all people who work with the Commercial High
Speed Oven, and provides them with the necessary information for carrying out
servicing and repair work properly and safely.
The trained service technicians should read the service manual before all servicing
and repair work. If you do not follow the information in this document, you risk
potentially fatal injury and property damage.
To guarantee safety, all people who work with the Commercial High Speed Oven
must have read and understood the following parts of this document before starting
any work: The sections that describe the activity to be carried out.
Users are cautioned that repairs should be performed by a TJE17G-S00N0A
authorized service agent using genuine TJE17G-S00N0A replacement parts.
TJE17G-S00N0A will have no obligation with respect to any product that has been
improperly installed, adjusted, operated or not repaired in accordance with national
and local codes or installation instructions provided with the product, or any
product that has its serial number defaced, obliterated or removed, or which has
been modified or repaired using unauthorized parts or by unauthorized service
agents. For a list of authorized service agents please refer to your distributor.
Generic Model Number
Description Commercial High Speed Oven
TJE17G-S00N0A
This chapter shows you how to identify your Commercial High Speed Oven and
provides guidance on using this manual.
1.1 Purpose of this chapter
01
GENERAL INFORMATION
1

2.1 Hazards and safety precautions during installing
2.1.1 Electrical Power
02
HAZARDS AND SAFETY
PRECAUTIONS
2.1.2 Mechanical parts of the appliance
Danger Where or in what situations
does the hazard arise? Preventive action
Trapping fingers
ivor bodyiv
When opening or
closing the door
When opening or
closing the door
Danger Where or in what situations
does the hazard arise? Preventive action
Risk of electric
shock from
live parts
Ensure that all electrical
connections are in perfect
condition and fixed securely
before putting the appliance
into use.
On the appliance and
on adjacent metal parts
Before preparing the
appliance for use, make sure
that the appliance is
connected to an equipotential
bonding system (EU).
Work on the electrical
system must only be
performed by qualified
electricians from an
authorized service
company.
Professional working
Under covers
Under the operating
panel
Along the mains power
lead
2

2.2 Hazards and safety precautions during servicing and repair
2.2.1 Heat
2.2.2 Electrical power
Danger Where or in what situations
does the hazard arise? Preventive action
Risk of electric
shock from
live parts
Before removing the covers:
Before putting the appliance
back into use, make sure that
the appliance, including all
metallic accessories, is
connected to an equipotential
bonding system.
Work on the electrical system
must only be performed by
qualified electricians from an
authorized customer service
company
Make sure that the electrical
connections are intact and
fixed securely before plugging
the appliance back into the
power supply.
Under covers
Under the control panel
On the appliance and on
adjacent metal parts.
On the appliance and on
adjacent metallic
accessories.
Switch o all connections
to the power supply
Take protective measures
at every power switch to
ensure that the power
cannot be switched on
again.
Wait 15 minutes to allow
the DC bus capacitors to
discharge.
Make sure that the
appliance is de-energized.
Danger Where or in what situations
does the hazard arise? Preventive action
A risk of burns
from hot surfaces
Inside the entire cavity,
including all parts that are
or were inside during
cooking, such as
On the inside of the
appliance door
Racks
Containers, baking
sheets, shelf grills etc.
Before starting cleaning
tasks, wait until the
cavity has cooled to
below 50°C/122°F or use
the 'cool down' function
to cool the cavity.
Wear specified
protective clothing, in
particular protective
gloves
3

2.2.3 Mechanical parts of the appliance
2.2.4 Moving heavy weights
2.2.5 Moving appliances supported on a wheeled base
Danger Where or in what situations
does the hazard arise? Preventive action
Risk of injury from
over-stressing
your body
When moving the
appliance
Use a forklift truck or
pallet truck to place the
appliance in the
installation position or to
move it to a new position.
Always use the correct
number of persons and
observe the limits
specified for lifting and
carrying when ad-joust-
ing the appliance
position.
Observe the local
occupational safety
regulations.
Wear personal protective
equipment
Danger Where or in what situations
does the hazard arise? Preventive action
Risk of crushing
of body parts
Risk of electric
shock from live
parts
While appliances are being
moved on a wheeled
platform.
Disconnect the appliance
from the electrical supply
before moving it.
When servicing the
appliances, always
engage the parking brake
on the wheels.
Danger Where or in what situations
does the hazard arise? Preventive action
Risk of body parts
being crushed if
the appliance tips
over or falls o.
Always observe the
requirements for the supporting
surface
When the appliance is being
moved e.g. to gain better
access to the connections
Risk of cuts from
sharp edges
Exercise caution when
performing this action
Wear personal protective
equipment
During servicing work
When handling sheet-
metal parts
Risk of hands and
feet being pinched
4

2.3 Hazards and safety precautions when taking the appliance out
of service
2.2.6 Smoke or fire
2.3.1 Electrical power
2.3.2 Moving heavy weights
Danger Where or in what situations
does the hazard arise? Preventive action
Risk of electric
shock from live
parts
Work on the electrical
system must only be
performed by qualified
electricians from an
authorized customer
service company.
Professional working
Danger Where or in what situations
does the hazard arise? Preventive action
Risk of fire/smoke
from defective
electrical com-
ponents or
wrong electrical
connections.
If one of the electrical
components is defect, for
example due to a short
circuit, or if the internal
wiring is refitted incorrectly
when servicing/repairing
the oven.
Never use electrical spare
components which failed
in a dedicated test or
which bear visible
damages.
Carefully refit electrical
connections using the
wiring diagrams provided
in this manual.
Danger Where or in what situations
does the hazard arise? Preventive action
Risk of injury from
over-stressing
your body
When moving the appliance
onto and o the moving
equipment.
Use a forklift truck or
pallet truck.
Do not exceed safety
limits for lifting and
carrying.
Wear personal protective
equipment.
Under covers
Under the operating
panel
5

2.3.3 Mechanical parts of the appliance
Danger Where or in what situations
does the hazard arise? Preventive action
Risk of slipping on
damp kitchen floor.
Ensure that the floor around
the appliance is dry at
all times.
Always observe the
requirements for the
supporting surface when
taking the appliance out
of service.
In front of the appliance.
Risk of body parts
being crushed if
the appliance tips
over or falls o.
When the appliance is
being moved e.g. to gain
better access to the
connections.
6

03
DIAGNOSTICS
This chapter contains information on checking various functions of your Commercial
High Speed Oven.
3.1 Checking the condition of your appliance
3.1.1 Servicing procedure
3.1.2 Enter Service Mode
1)Disconnect/isolate the appliance from the power supply.
2)Check the appliance is correctly installed.
3)Visually check the cleanliness/condition of the power supply/cable/gland, casing,
cavity and door of the appliance for signs of wear, damage, distortion etc. If
required, refer to the “Replacing components" section of this manual.
4)Complete an "Earth/Insulation test" (see “Tests" section of user manual) on the
appliance before switching on.
5)Check the display for error messages. If an error is shown, refer to the “Diagnos-
tics” section of this manual.
6)If a firmware update is required, follow the instructions under “Firmware Updates”
before continuing with the service procedure.
On start up，Click on the“No Preheat”
button，Enter the next UI interface.
Select the spanner symbol.
1
1
2
7

3.1.3 Functions of the Service Mode
Check the "Error Log" for details of
any logged appliance errors and refer
to the error codes for more details.
Check the "Running Status" to find the
operational performance of the main
components.
Click “Defect Records” button to display “Error Logs”、“Oven Counters”、“Running
Status”、“Reset”.
Check the "Oven Counters" to find the
usage of components.
34
2) Oven Counters
1) Error Logs
3) Running Status
8