Sharp R-1900J Service Manual

R1900J
7 – 1
R1900J
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
The service person can check and /or carry out the contents as shown in the table 2.
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 
contents 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) 3800 hour Display only
“CC”, “2.” repeatedly Magnetron 2 (bottom) 3800 hour Display only
“CC”, “3.” repeatedly Exhaust motor 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 Limit of factory setting
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 motor 7 9999 hours  —
Exhaust motor limit time 8 9999 hours –  3000 hours
Magnetron limit time 9 9999 hours –  3800 hours
Relay limit ON/OFF count 0 999 (x 1000) counts –  400 (x1000) counts

Sharp R-1900J Specifications

General

Brand	Sharp
Model	R-1900J
Category	Microwave Oven
Language	English