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.
Text excerpt from page 316 (click to view)
CCS Technical Documentation
RH-12/RH-28 Car Installation Kit
1.
2.
3.
4.
HF Microphone HFM-8
The HF microphone should be installed according to the directions in the separate microphone installation guide. Ensure the microphone is as close to the driver�s mouth as possible, and attached to a surface that is mechanically quiet. The microphone should be mounted at least 3 ft./1 m away from the handsfree unit speaker to avoid acoustic feedback. Insert the HFM-8 plug into the MIC socket in HFW-1 and twist 90° clockwise to lock firmly in place.
HF Speaker HFS-12
Install the HF speaker so that it is at least 3 ft./1 m away from the HFM-8 microphone to avoid acoustic feedback. Insert the HFS-12 plug into the SPEAKER socket and twist 90° clockwise to lock firmly in place. Under no circumstances should the HFS-12 prevent the driver from controlling or operating the vehicle in any way or observing traffic.
Power Cable PCU-4
The power cable connects the wireless handsfree unit HFW-1 to the vehicle�s power supply (DC socket). The red wire must be connected to the + voltage on the vehicle�s power supply via the supplied fused connector. The black wire must be attached to a good negative GND connection. The blue ignition sense (IGNS) wire is connected to +12 V voltage con trolled by the vehicle�s ignition key via the supplied fused connector. See section "Ignition Sense". The yellow wire is used for car radio muting (CRM). The line goes down to 0 volts during a call. See section "Car Radio Muting".
