Fast Download,all pages present,an excellent copy.THis enabled to find the origional part numbers and chase them up. The cartridge is proving difficult to find but at least I know the origional part number.Thanks to all.
Very good manual, in depth and complete. Only criticism is that some of the circuit diagrams are slightly blurry and hard to follow for long periods of time, but this is to be expected. Perfect for any maintenance required. Also contains the wiring diagrams of the control cable for constructing extensions.
Text excerpt from page 20 (click to view)
Note : Clear RF signal waveform means that the shape � � � can be clearly distinguished at the center of the waveform.
RF signal waveform VOLT/DIV : 200mV TIME/DIV : 500ns
Procedure : 1. Connect oscilloscope to TP (TEO) and TP (VC). 2. Turned Power switch on. 3. Load a disc (YEDS-18) and playback the number five track. 4. Press the gG button. (Becomes the 1 track jump mode.) 5. Confirm that the level B and A (DC voltage) on the oscilloscope waveform.
1 track jump waveform center of waveform B 0V level=1.3±0.6Vp-p Specified level: �� � 100=less than ±22% A B symmetry A (DC voltage)
TP (FEO) TP (VC)
IC101
TP (RF)
TP (DGND)
6. After check, remove the lead wire connected in step 1. RF PLL Free-run Frequency Check Procedure : 1. Connect frequency counter to test point (XPCK) with lead wire.
BD board TP (XPCK) frequency counter
2. Turned Power switch on. 3. Put the disc (YEDS-18) in to play the number five track. Confirm that reading on frequency counter is 4.3218MHz.
