2.
Check of input voltage
TP0
–
CN1-1
+9V~
+14V
3.
Power voltage in the circuit
TP0
–
TP1
+4.75V~
+5.25V
TP0 – TP2
+3.15V~ +3.45V
TP0 – IC12-O
+7.6V~ +8.4V
TP0 – IC13-OUT
+2.65V~ +2.95V
TP0 – D3 kasode
+2.0V~ +2.4V
TP0 – IC8-5
-8.4V~ -7.6V
4.
Check of signal wave
TP0 – IC1-39 (19.968MHz)
TP0 – TP4 (38.4MHz)
Check of tuning-fork vibration (800~1000Hz)
CH1: TP0 – TP6 P-P 200mv or more
CH2: TP0 – TP5 P-P 9V or more
12
Summary of Contents for KERN AEJ
Page 5: ...3 Electric Electronic Construction 3 1 Block Diagram Calibration Weight Unit AEJ only PRINT 5 ...
Page 6: ...3 2 Whole Wiring Calibration Weight Unit AEJ only PRINT 6 ...
Page 7: ...4 Troubleshooting 4 1 Troubleshooting Procedure 7 ...
Page 11: ...4 4 Check of Electric Electronic Parts 1 Check of HT DP board 11 ...
