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 ;
It was a great experience,instead of purchasing a new Stereo Amplifier ,in just minutes i repaired my old one and that was thaks to the manual I have purchased from you.
Thanks again.
Samuel Alter
;
Das ging ja sehr unkompliziert hat bestens geklappt und die Quallität ist auch noch gut.
Vielen Dank dafür.
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Everything okay, thanks a lot. It was a pleasure for me to make a deal with you.
;
A deal without problems, very fast and the manual is a good quality. Sorry for the my english.
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Superb service and excellent quality of the document received
PRECAUTIONS
To prevent damage of the thermal head caused by static electricity when assembling the chassis ass'y into the unit, the following steps must be followed; 1 : Turn the power switch off. 2 : Discharge the capacitor C5(2200µF) on the PCB Z556-1. 3 : Connect the FPC of chassis ass'y into a connector CN4 of PCB Z556-1. 4 : Assemble the chassis ass'y. 5 : Turn the power switch on.
LSI1 C5
CN4
FPC
PCB Z556-1 Chassis ass'y
ADJUSTMENT
Adjustment of low battery detection circuit
Figure-4
To adjust the threshold voltage of the low battery detection circuit, the following steps must be followed; 1 : Apply 9V to the battery terminals. Multi-meter-1 2 : Press ON while holding down 3 keys SET, RETURN and FUNCTION. (Start Diagnostic Program) 3 : Press 7.(Apply the voltage Vp for printer) 4 : Apply the voltage with a power supply so that the voltage at the collector of Q1 is 6.2V+0.1 / -0V. 5 : Adjust a pot VR1 so that the voltage between pin-8 of IC4 and pin-5 of IC3 is 0 +/-0.01V.
Multi-meter-2
0 +/-0.01V 6.2V+0.1/-0V
+
Power supply
VR1 IC4 5 8 IC3 Q1
+
9V ~ 6.5V
+
Figure-5
Setting the thermal head rank
Set the thermal head rank with pads RNK1 and RNK2 on the PCB L271-1 according to the following conditions when replacing the chassis ass'y or thermal head. The head rank is indicated on FPC as following figure-6. Head rank A : RNK1=SHORT, Head rank B : RNK1=OPEN, Head rank C : RNK1=OPEN, Head rank D : RNK1=SHORT, RNK2=OPEN RNK2=SHORT RNK2=OPEN RNK2=SHORT
XXXXXXB
Head rank = B
XXXXXXB
Figure-6
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