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Everything was great, the manual, the response time, the simplicity of the order, and the
Price. The only thing that I could possible say on a negative note would be that the manual I ordered was more for a service tech. There were a lot of schematic diagrams that didn't help me solve the problem. However I would order again and recommend the web sight to others.
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I'd been looking for this manual for awhile. Exactly what I needed - and at an excellant price. Thanks!
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very complete. acceptable resolution. details are a little unclear. is a manual note 8.
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excellent service - fast purchase - easy download - will buy from again
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Manual is actually a pack of schematics, good quality pictures.
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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