KERN GAB 3K1DM Service Manual

Also see for GAB 15K5DM: Operating instructions

- 29 - GAB/GAS-SH-e-07114.3 TroubleshootingSymptom Cause Measure1. Trouble of dry battery powersupply system• Check and replace dry batteries• Confirmation and exchange ofbattery harness2. AC adaptor trouble • Check output voltage (DC2.4-6.0V)and replace AC adaptor1. The display check does notstart when the power switch ispushed.3. Main board trouble • Replace the main borad PS-005A.1. Garbled EPROM data orinitialized state.• Initialize, perform C1, and C2 andC3 settings, then push the memoryswitch.2. Power ON → Display check →"Err1"2. Main board PS-005A trouble • Replace the main board PS-005A.3. Power ON → Display check →"Err2"1. Outside weight value startrange• Check if anything is placed on theplatter. If so, remove it.• Replace the load cell.• Replace the main board PS-005A.4. Power ON → Display check →“0”kg does not appear on thedisplay.1. Weight value is unstable. • Check if something comes in contactwith the platter. If so, remove it.• Check if there is wind or vibrationnear the machine. If so, avoid these.• Replace the main board PS-005A.• Replace the load cell.5. Weight varies at four corners. 1. External or load cell trouble • Check if the horizontal state is beingkept.• Check if there is foreign articlebetween the platter and the case.• Check if space of limit adjustmentscrew is narrow• Replace the load cell.1. Outside of zero-adjustmentor tare subtraction range• Check that zero-adjustment or taresubtraction is within the specifiedrange.6. The ZERO or TARE key doesnot function.2. Weight value is unstable. • Check if something comes incontact with the platter. If so,remove it.• Check if there is wind or vibrationnear the machine. If so, avoidthese.• Replace the main board PS-005A.• Replace the load cell.1. Auto power OFF setting. • Check if the auto power OFFfunction works.• Default is 60 minutes.7. The power supply cuts whentime passes.2. Main board PS-005A trouble • Replace the main board PS-005A.

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