Bardzo dobra jakość skanu, przystępna cena. Instrukcja serwisowa okazała się przydatna przy "reanimowaniu" dwudziestoparoletniego decka, który teraz pięknie gra :)
Tekstowy podgląd strony 22 (kliknij aby zobaczyć)
THIS NOTE IS COMMON FOR PRINTED WIRING BOARDS AND SCHEMATIC DIAGRAMS. (In addition to this, the necessary note is printed in each block.) For schematic diagrams.
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. The resistance indicated MF shows tolerance 2%. ¢ : internal component. 1 : fusible resistor. 5 : fusible resistor. C : panel designation. Note: The components identified by mark ! or dotted line with mark ! are critical for safety. Replace only with part number specified. � � � � U : B+ Line. V : B� Line. H : adjustment for repair. Voltages and waveforms are dc with respect to ground under no-signal (detuned) conditions. � : Can not be measured. � 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. � Signal path. a : RF (AC-3) L : digital in c : digital out
WAVEFORMS � MAIN BOARD (1/4) �
1
5.6Vp-p 7.17MHz
IC423 %¡ (SCKR)
2
5.2Vp-p
4.18MHz
IC423 $ª (SCKT)
3
5.2Vp-p 3MHz
IC423 @¶ (EXTAL)
4
5.2Vp-p 129kHz
IC201 9 (FL-CLK)
5
4.6Vp-p 16MHz
For printed wiring boards.
Note: � X : parts extracted from the component side. � Y : parts extracted from the conductor side. � p : parts mounted on the conductor side. � ® : Through hole. � ¢ : internal component. � b : Pattern from the side which enables seeing. (The other layers' patterns are not indicated.) Caution: Pattern face side: (Side B) Parts face side: (Side A)
IC201 2 (XTAL)
6
5.6Vp-p
65kHz
IC301 @� (LRCK)
7
5.6Vp-p 4.16MHz
Parts on the pattern face side seen from the pattern face are indicated. Parts on the parts face side seen from the parts face are indicated.
