I have sharp ar-5516 in machine a code shown star how to reset code

Question edited for clarity, 'sharp at 5516' to 'Sharp AR-5516'.

Remove the toner cartridge and clean the contacts on both the cartridge and the copier with alcohol. Tap the cartridge on both ends to settle the toner. Make sure you are using genuine Sharp replacements.

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That's a serviceman light and the star (circle of dots) means your machine is due for a developer change.

the door is open

RESET ar5516

sharp ar 5516 showing ( - - - ) what's the solution

this error means:
heat roller abnormally low temperature.
for check:
1- check the heater lamp
2- check the thermistor
for reset:
clear key --> interrupt key --> "0" key --> interrupt key --> 14 --> start key

F2 fault code

for AR 5320 just check 1- main corona 2- leveling the developer unit 3- clean cleaning plate,
for H4 just rest the machine as mentioned above, if not plz check fuzing unit -- thermostat

sharp ar5516 showing code f2 or h2

Hi My Error is
code h4-00
sharp AR-5127
please help me