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.
This is a great site. I placed my order and by the next am it was available for download. Had some problems with some missing copy on some pages. Once I brought the error to the OMC's attention, the issue was resolved. I'll come back again.
Text excerpt from page 42 (click to view)
6120N N/B MAINTENANCE
Reassembly
1. Align the beveled corner of the CPU with the beveled corner of the socket and insert the CPU pins into the holes. Insert a minus screwdriver to the CLOSE (lower) side of the socket and push the screwdriver toward the CPU to secure the CPU in place. CAUTION: The maximum force for insertion of the CPU should not exceed
100 lbs (45.5 kg).
Figure 5-16. Insertion the CPU
2. Place the fan assembly on top of the CPU. Plug in the power cord and secure the fan assembly with four screws. (Refer to Figure 5-14 earlier.) 3. Replace the CPU compartment cover and secure with two screws.