I found the manual to be clear concise and complete. It was of immense assistance when removing the unit as the unit was over 22 years old and the wiring diagram was unobtainable from the manufacturer. The exploded drawings were clear as were the instructions and labels.
This manual was very good & was very helpful with repairs.
Always great & fast service from Owner's manual.
Text excerpt from page 78 (click to view)
FO-71TH/UX-61TH/GQ-56TH/FO-51TH UX-41TH/GQ-31TH/UX-21TH/FO-11TH/GQ-11TH 3. Shading paper
The white and black basis is applied to remember the shading waveform. Be sure to perform this operation when replacing the battery or replacing the control PWB. Execute in the shading mode of DIAG mode.
SHADING WAVE MEMORY STANDARD PAPER (PSHEZ3579SCZZ)