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A good manual! fast service and good qualityi for pdf document.
thanks!
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Very helpful and complete manual. Maybe only one negative is schematics have sometimes unreadable name of the parts. But it's not a big problem.
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Excellent high quality schematics brought my old Heidelberg back to life. Fast download at a reasonable price. Thanks.
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This document is just what I was looking for, it´s very useful, it contains adjustment procedures for the final stage of the power amp and also
has a complete wiring diagram and description of the main semiconductors used in the design.
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Dear Sirs,
Thank you for the fast support, the manual does provide all necessary information to repair the radio. All schematics are in a good quality for reading.
The manual fits 100% to my requirements as a technican.
Kind regards Thomas
IC, TA1275AZ Pin No.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21
Pin Name
Y OUT MODE SW R-Y OUT R-Y BLACK CONTROL B-Y OUT B-Y BLACK CONTROL S-ID FILTER EXT R-Y IN 5V VCC EXT B-Y IN GND Fo-ADJ FILTER C IN BELL-ADJ FILTER Y IN BELL CONTROL S.C.P. IN 5V VCC 4.43MHz CW IN ID SW SECAM ID I/O
I/O
O O O I O I I I I I I I I I I I I I/O The output pin for Y signal.
Description
The pin for controlling the Y processing mode: to Vcc: 5.5MHz trap ; open: 5.5MHz trap + D.L ; to GND: DL. (not used) The output pin for demodulated R-Y signal. The pin for controlling the black offset level. (not used) The output pin for demodulated B-Y signal. The pin for controlling the black offset level. (not used) The pin for connecting the SECAM ident filter capacitor. The input pin for external R-Y signal. (not used) The Vcc pin for Y/C processing block. The input pin for external B-Y signal. (not used) The Gnd pin. The pin for connecting a capacitor for automatic adjusting circuit. The chroma signal input pin. The pin for connecting a capacitor for the bell filter fo, 4.286MHz. The Y signal input pin. The pin for selecting the bell filter fo. fo + 70KHz: open ; fo + 35KHz : 20k to GND ; fo: to GND.(Connected to Pin 18) The pin to input the sand castle pulse, SCP. Vcc pin for logic block. The pin for input 4.43MHz of carrier wave for self adjustment circuit. The switch pin for selecting the ID detection mode. (Connected to Pin 18) H + V: connected to Vcc ; Auto search: opened ; H: connected to GND. The interface pin to the main processor.
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