The purchased manual is an scan of the original Panasonic paper-based Service Manual. Unfortunately the contrast is not perfect, but I am satisfied anyway!
The purchased manual is an high-quality scan of the original JVC paper-based Service Manual. The Service Manual includes the Owner´s Manual, so you do not have to buy both of them.
Complete manual with clear schematic diagrams and printed circuit board layouts of two variants of the headset and the transmitter an old and a new version.
Also shows how the headset and the transmitter is opened and how transmitter and receivers can be adjusted and where to measure.
I had no problems to repair the headset using this service manual.
Excellent printing quality. A complete and very useful manual with all details.
Text excerpt from page 4 (click to view)
KDC-5021/5021V,506
COMPONENT DESCRIPTION
SWITCH UNIT (X16-167x-xx)
REF. No. IC1 IC2 Q1 Q2 Q3 Q4 FUNCTION LCD DRIVER REMOTE CONTROLLER KEY SCAN START IC2 POWER SUPPLY SW KEY GREEN ILLUMI SW KEY RED ILLUMI SW OPERATION Drives LCD. Controls the unit. Turns on when the base level goes "L". Turns on when the base level goes "L". Turns on when the base level goes "H". Turns on when the base level goes "H".