I searched EVERYWHERE looking for the manual/s on this "extinct" amp. Owner-Manuals.com made it available and for nearly nothing. Thanx to them, I can decipher the unknown cables and sort them out. Thanx, Owner-Manuals.com!!
Great manual...really saved me. The only problem is that I thought I would be able to download it directly when I paid for it but never received the download instructions until the next morning. The board trace pages were somewhat light also: really need to turn up the contrast on the printer before printing them. The schematic page was great; very clear! Well worth the money.
I've been in the electronic business for a long time. I used to buy Sam's Photofact for my needs which intailed having to go to the store and paying about $20 for a package of 3 different units so I was forced to buy more than I needed just to get one.
Owner manual is just at your keyboard and the information is almost instantansouly and the cost is very reasonable. Easy to print out if needed or simply read off of the screen. The larger the screen the better for obvious reasons.
Text excerpt from page 14 (click to view)
WM-FS473
5-5. SCHEMATIC DIAGRAM (DISPLAY SECTION)
r
WAVEFORM
1
SUB
1.1Vp-p
75kHz 13.6µsec
IC701 %�
VOLT/DIV : 0.2V AC TIME/DIV : 5 µsec
r
IC BLOCK DIAGRAM
OUT GND VCC
IC702 PST9018NL
5
4
+
OP1 CO1
�
+ �
1
NC
2
3
Note: � All capacitors are in µF unless otherwise noted. pF: µµF 50 WV or less are not indicated except for electrolytics and tantalums. � All resistors are in � and 1/4 W or less unless otherwise � � � � � specified. C : panel designation. U : B+ Line. Power voltage is dc 3 V and fed with regulated dc power supply from battery terminal. Voltages and waveforms are dc with respect to ground under no-signal (detuned) conditions. Voltages and waveforms are dc with respect to ground in playback mode. no mark : FM (RADIO SECTION) PLAY (TAPE SECTION) ( ) : AM Voltages are taken with a VOM (Input impedance 10 M�). Voltage variations may be noted due to normal production tolerances. Waveforms are taken with a oscilloscope. Voltage variations may be noted due to normal production tolerances. Circled numbers refer to waveforms.
