R-1900M (serv.man8). Touch Control Panel Assembly - Sharp Home Appliance Service Manual (repair manual)

r-1900m (serv.man8) service manual
Model
R-1900M (serv.man8)
Pages
6
Size
183.7 KB
Type
PDF
Document
Service Manual
Brand
Device
Home Appliance / Microwave Oven / Touch Control Panel Assembly
File
r-1900m-sm8.pdf
Date

Read Sharp R-1900M (serv.man8) Service Manual online

R1900M
7 – 1
R1900M
Service Manual
 
CHAPTER 7. 
TOUCH CONTROL PANEL ASSEMBLY
[1] SPECIAL FUNCTION FOR SERVICING
This oven has the special functions for servicing as shown in the table 1 ~ 4.
By using the special function, service person can check the using time or the using number of times for the electrical parts. Also service person can
check the AC supply voltage and /or set the standard voltage.
When “SF-2” is selected, the display will show the total cooking number of times.
Table 1. Total cooking number of times
Table 2. Special function
NOTE: The function marked “yes” can be used only after the oven is plugged in again.
1. Check, clear and set of using time or number of times
When the display shows “CC” and the number as shown in the table 3,
1) Before replacing the parts, check the using time or number of times about the parts.
2) If the using time or number of times go over the limit level, replace the defective parts.
3) After replacing the parts, clear the using time or number of times about the parts, referring to the table 4.
Table 3. CC error
The using time or using number of times can be checked or set by using the number pads after “SF-2” is set.
Table 4. Using time or number of times about each part
Set
Contents (decimal)
Max.
Data clear
New data set
SF-2
Total cooking number of times
9999(x100) times
key
Display
After plug in
Check, clear and set of using time or number of times
2
SF-2
Error history
4
SF-4
Check of AC supply voltage
5
SF-5
Exhaust thermistor check
6
SF-6
Yes
Set standard voltage for production.
7
SF-7
Yes
Model name
Making date of software
CUSTOM HELP
cd XX (Model)
XX XX (Date)
XX XX (Time)
Display
Content
Limit level
Action
“CC”, “1.” repeatedly
Magnetron 1 (top)
1250 hour
Display only
“CC”, “2.” repeatedly
Magnetron 2 (bottom)
1250 hour
Display only
“CC”, “3.” repeatedly
Exhaust fan
3000 hour
Display only
“CC”, “4.” repeatedly
Need to change relay unit
MG Relay 200000 times Display only
“CC”, “1.2.4.” repeatedly
Some maintenance occurs same time
Ex. Magnetron 1&2 and relay unit
Display only
Contents (decimal)
10 key
Max.
Data clear
New data set
Using time of MG 1 (top)
1
9999 hours
Using time of MG 2 (bottom)
2
9999 hours
Using number of times of MG 1 (top) relay
3
999 (x 1000) times
Using number of times of MG 2 (bottom) relay
4
999 (x 1000) times
Total cooking time (hour. min.)
5
99 hours 59min.
Total cooking time (hundred hour)
6
9999 hundred hours
Using time of exhaust fan
7
9999 hours
R1900M
7 – 2
For example: Procedure to check the total cooking number of times (example, 957700 times) and using time (example, 1260 hours) of MG 1
and set 0 hours after MG1 is replaced.
: no sound     : 0.1 second sound       : 2.0 second sound     : (0.06 sec. ON, 0.06 sec. OFF) x 2 beeps 
 
✩: [(0.04 sec. ON, 0.04 sec. OFF) x 3] x 4 beeps    : (0.1 sec. ON, 0.1 sec. OFF) x 10 beeps
For example: Procedure to check the total cooking number of times (example, 957700 times) and clear it and check using time (example,
1260 hours) of MG 1 and set the using time (example, 1000 hours) of MG1.
2. Error history (SF-4)
You can check the most recent 10 error histories.
For example: Procedure to check the error histories that have been memorized in memory 1, memory 2 and memory 9.
#1 If there is no error “0" will be displayed. 
#2 If you touch POWER LEVEL, all history are cleared. 
Operation
Display
Indicator
Sound
(within 20 sec.)
POWER LEVEL
SET MEMORY
START
STOP/CLEAR
2
(after 1 sec.)
1
MANUAL/ REPEAT
START
STOP/CLEAR
CHECK
CHECK
.
.
.
.
SF-
SF2
9577
(total counter for serviced [x 100])
1260
0
SF-2
0
Operation
Display
Indicator
Sound
(within 20 sec.)
POWER LEVEL
SET MEMORY
START
STOP/CLEAR
2
(after 1 sec.)
MANUAL/ REPEAT
START
1
MANUAL/ REPEAT
1,0,0,0
START
STOP/CLEAR
CHECK
CHECK
.
.
.
.
SF-
SF2
9577
(total counter for serviced [x 100])
0
SF-2
1260
0
1000
SF-2
0
x4
Operation
Display
Indicator
Sound
(within 20 sec.)
POWER LEVEL
SET MEMORY
START
STOP/CLEAR
4
1 (latest error No.)
2 (1 time previous error)
9 (8 times previous error)
POWER LEVEL
.
.
.
.
SF-
SF-4
EE 1
EE 6
EE24
0
#2
#1
R1900M
7 – 3
3. Check of AC supply voltage (SF-5)
You can check the current voltage of AC supply.
For example: Procedure to check current voltage (In case of over
230V)
For example: Procedure to check current voltage (In case of
under 230V)
For example: Procedure to check current voltage (In case of over
264V(240 +10%)
For example: Procedure to check current voltage (In case of
under 202V(230V--12%)
4. Exhaust thermistor check (SF-6)
You can check if the exhaust thermistor works correctly or not by using this function.
For example: In case the exhaust thermistor works correctly (275ml water load is necessary.), the display will show “OH” as follows.
Operation
Display Indicator Sound
(within 20 sec.)
POWER LEVEL
SET MEMORY
START
STOP/CLEAR
5
STOP/CLEAR
.
.
.
.
SF-
HIGH
0
(over230V)
Operation
Display Indicator Sound
(within 20 sec.)
POWER LEVEL
SET MEMORY
START
STOP/CLEAR
5
STOP/CLEAR
.
.
.
.
SF-
LO
0
(under 230V)
Operation
Display Indicator Sound
(within 20 sec.)
POWER LEVEL
SET MEMORY
START
STOP/CLEAR
5
STOP/CLEAR
.
.
.
.
SF-
EE4
0
Operation
Display Indicator Sound
(within 20 sec.)
POWER LEVEL
SET MEMORY
START
STOP/CLEAR
5
STOP/CLEAR
.
.
.
.
SF-
EE5
0
Operation
Display
Indicator
Sound
(within 20 sec.)
(within 20 sec.)
plug in
POWER LEVEL
SET MEMORY
START
STOP/CLEAR
6
START
(after 5 min.)
STOP/CLEAR
STOP/CLEAR
ON
or
.
.
.
.
SF-
SF-6
5.00
(count down)
OH
SF-1
0
or
R1900M
7 – 4
For example: In case the exhaust thermistor works incorrectly (275ml water load is necessary), the display will show “no” as follows. In
that case, the exhaust thermistor should be checked or replaced.
5. Set of standard voltage (SF-7)
When the control unit or the relay unit is replaced, set the standard voltage, referring to following procedure. Because the control unit judges if the AC
supply voltage is 240V+10% or 230V-12% by comparing with the standard voltage. The temporary standard voltage is set when the oven is shipped
from the factory. But when the control unit is replaced to new one, it does not have the standard voltage. When the relay unit is replaced to new one,
set the standard voltage too. Because the signal from the relay unit to detect the AC supply voltage has error of 
±5%.
The standard voltage can be set by using this function. For this model’s standard voltage is 230V.
For example: Procedure to set the standard voltage (in case input voltage is 230V 
±1V)
For example: In case that AC supply voltage is out of range from tentative memorized voltage (240V +10% ~ 230V-12%), the display will
show “----” as follows. 
At that time, the voltage of AC power may be not suitable or the control unit and /or the relay unit may be out of order.
Operation
Display
Indicator
Sound
(within 20 sec.)
(within 20 sec.)
plug in
POWER LEVEL
SET MEMORY
START
STOP/CLEAR
6
START
(after 5 min.)
STOP/CLEAR
STOP/CLEAR
ON
.
.
.
.
SF-
SF-6
5.00
(count down)
no
SF-1
0
or
Operation
Display
Indicator
Sound
(within 20 sec.)
(within 20 sec.)
plug in
POWER LEVEL
SET MEMORY
START
STOP/CLEAR
7
START
(after 1 sec.)
STOP/CLEAR
.
.
.
.
SF-
230U
230U
SF-
0
(currnt voltage)
Flashing
Operation
Display
Indicator
Sound
(within 20 sec.)
(within 20 sec.)
plug in
POWER LEVEL
SET MEMORY
START
STOP/CLEAR
7
START
STOP/CLEAR
.
.
.
.
SF-
----
0
Page of 6
Display

Download Sharp R-1900M (serv.man8) Service Manual (Repair Manual)

Here you can read online and download Sharp R-1900M (serv.man8) Service Manual in PDF. R-1900M (serv.man8) service manual will guide through the process and help you recover, restore, fix, disassemble and repair Sharp R-1900M (serv.man8) Microwave Oven. Information contained in service manuals typically includes schematics / circuit diagrams, wiring diagrams, block diagrams, printed wiring boards, exploded views, parts list, disassembly / assembly, pcb.