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Thanks so much for the Owner's manual for my Sony PS - FL1. I had purchased the turntable off of eBay. It came in and looked great. Packed well and appeared to be great. I balanced and aligned the tone are and hooked it up. When trying to play a record the tone are would move to the right place and just before it would drop to play it moved back off the edge of the record before touching down. I searched the net for an answer to this issue. No luck. Then I purchased the owners manual and sure enough there was a place to adjust where the stylus touched down. That adjustment solved the problem and saved me a $35 feet to have the player checked out. The manual is well written and easy to understand. It is a must have for anyone with this front loading Sony turntable.
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Some years back I pruchased a Sansui G-9000. I had it cleaned up and a problem with the left channel repaired. When I got it back I hooked it up to my tape decks, turn tables, TV and it played great. The only thing I was not really satisfied with was the performance of my Graphic Equalizer. I purchased this owner's manual had poured myself a cup of coffee. The manual is well organized and written in plain language. It also contained the solution to my dissatisfaction. By using the preamp connections coupled I was able to run everything through my graphic equalizer and now enjoy the full potential of my complete system.
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An excellent service for the price, however, it would also have been handy if the troubleshooter pages were included. The manual is only sent in the language of your country, thus it looks as though there are some pages missing. Otherwise highly recommended.
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I am happy to get a rare TECHNICS SH-9090 Owner's Manual by PDF in clear copy.
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Hr, klasse , good manual, verry fast on my e-mail, very usefull manual. rgds; ahm zeegers
Section IV Paragraphs 4-9 to 4-15
Model 120B tween the two triodes. Potentiometers R21 (VERNIER control) and R20 (CAL) adjust the resistance between the plates and therefore determine the gain of the amplifier. The VERTICAL VERNIER control provides a ten-to-one variation in gain between ranges of the VERTICAL SENSITIVITY switch. The second differential amplifier, V2, has potentiometer R32 (vertical POSITION control) between its cathodes. This potentiometer controls the current distribution between the two triodes and thus determines the vertical position of the c r t display. The third differential amplifler, V3, is the output stage. Synchronization signals a r e taken from the plates of V3 for application to the TRIGGER SOURCE switch. Since the horizontal sweep circuits trigger only on the negative slope of the signal, provision i s made to take the proper synchronizing signal from either plate of V3. 4-14. One section of the BEAM FINDER switch i s in the cathode circuit of V3. When pressed, the switch increases the common cathode resistance and so r e duces the gain of the stage that no amount of unbalance ahead of V3 can deflect the sweep off the crt. 4-15. The calibrator circuit consists of neon lamps V4, V5, and associated circuit parts. When VERTICAL SENSITIVITY switch S2 i s placed in the CAL position, V4 ionizes and capacitor C14 begins charging. As the voltage across capacitor C14 rises, the voltage a t the junction of V4 and R52 r i s e s proportionally. When the voltage a t this junction reaches the firing potential of V5, V5 ionizes. Since the conducting potential of V5 is less the firing potential, the voltage a t the junction of V4 and V5 drops, and V4 deionizes. C14 discharges through R53, and the potential across V4 increases. When the potential across
4-9. CIRCUIT A N A L Y S I S .
4-10. VERTICAL AMPLIFIER.
4-11. For a c coupling, capacitor C1 is placed in s e r i e s with the signal path by means of the AC-DC switch. (See figure 5-6. ) The input signal is then applied to VERTICAL SENSITIVITY switch S2. When the switch is in the CAL position, the input of the amplifier i s directly connected to the output of the calibrator (V4, V5, and associated circuit parts). When the VERTICAL SENSITIVITY switch is in other positions, precision frequency-adjusted attenuators a r e inserted. These attenuators give a ten-to-one attenuation between adjacent positions. The input signal is then applied to the control grid of amplifier VIA. 4-12. Balanced input to differential amplifier V1B is obtained by removing the ground jumper across r e sistor R1 (ground strap on front panel) and applying a balanced signal input. Balanced input i s useful in applications where it is desired to simultaneously amplify the out-of-phase (differential) signal and attenuate the in-phase (common mode) signals, such a s hum, noise, etc. This rejection is an inherent property of differential amplifiers. The common-mode signals a r e attenuated by 40 db (100:1), whereas any differential input is amplified. 4-13. The vertical amplifier consists of three s e t s of balanced differential amplifiers (Vl, V2, and V3) in cascade. The three stages a r e neutralized by plate-to-grid c r o s s neutralization. The f i r s t stage, V1, has balance and gain adjustments. The balance adjustment (BAL) is potentiometer R16 in the cathode circuit, which adjusts the current distribution be-
9 [TRIGGER
I
LEVEL
I
GATE-OUT CATHODE FOLLOWER V204
n
'
UNBLANKING GATE TO HIGH-VOLTAGE POWER SUPPLY
I
I
-v
NETWORK TRIGGER v202
SWITCH DIODE
FROM ITRIGGERSOURCE ISYNC -+ SW
TRIGGER GENERATOR v201
*
I
SAWTOOTH INTEGRATOR V205A
I
A
CLAMP V203A
STOP
I I
I
+
SAWTOOTH CATHODE
i
:-HOLD- O F F CATHODE FOLLOWER V203B
A
FOLLOWER V205B
ISWEEP MAGNIFIER]
*
A
TO HORIZONTAL AMPLIFIER
83-U-267
-
Figure 4-2.
Sweep Generator, Block Diagram 01260-1
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