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Good scan of the original service manual. All schematics and adjustment procedures are there. It helped me to fix a long lasting problem with the tracking circuitry. The manual also includes the supplementals 1,2 and 3. Included are; electrical schematic's , pcb layout's, mechanical drawing's and exploded views, disassembly manual and maintenance procedures. 236 pages.
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The Service Manual received was helpful. The electronic information is exactly what I needed.
I recomend all of my friends about this technical page.
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High quality scan of service manual. I am satisfied!
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Excellent copies.
I will use "Owner Manual" again a second time.
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Very good manual for Technics SL 303. Manuale molto utile.
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1.3.8 Coefficient display of adjustment results
For some of the adjustments (FE and RF offset, FZD cancel, F and T gains, and RFAGC), the adjustment results can be displayed and confirmed in the test mode. The coefficient display in each auto adjustment is as follows: 1) FE and RF offset Reference value = 32 (coefficient of 32 indicates that no adjustment is required) The value is displayed in the unit of approximately 32 mV. Ex. When the FE offset coefficient is 35, 35 - 32 = 3 x 32 mV = 96 mV The correction is about +96 mV, which means the FE offset before adjustment is - 96 mV. 2) F and T gain adjustment Reference value for focus and tracking = 20
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The displayed coefficient / the reference value indicates the adjusted gain. Ex. When the AGC coefficient is 40, adjustment of 40 / 20 = 2 times (+ 6 dB) has been performed. (It means that the original loop gain was half the target, and the whole gain was doubled to obtain the target value.) 3) RF level adjustment (RFAGC) Reference value = 8 The coefficient of 9 to 15 indicates to increase the RF level (for more gains). The coefficient of 7 to 10 indicates to decrease the RF level
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(for less gains). When the coefficient changes by 1, the gain changes by 0.7 to 1 dB. When the coefficient is 15, the gain is the maximum at TYP + 7.9 dB. When the coefficient is 0, the gain is the minimum at TYP - 4.6 dB.
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CX-3195
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