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STR-K665P SECTION 3 DIAGRAMS
3-1. CIRCUIT BOARD LOCATION THIS NOTE IS COMMON FOR PRINTED WIRING BOARDS AND SCHEMATIC DIAGRAMS. (In addition to this necessary note is printed in each block.)
For schematic diagrams.
STANDBY board SUB WOOFER board POWER board MAIN board DIGITAL board
For printed wiring boards. Note:
� X : parts extracted from the component side. � a : Through hole. � f : internal component. � : Pattern from the side which enables seeing.
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. � % : indicates tolerance. � f : internal component. � 2 : nonflammable resistor. � 5 : fusible resistor. � C : panel designation. Note: The components identified by mark 0 or dotted line with mark 0 are critical for safety. Replace only with part number specified. � A : B+ Line. � B : B� Line. � Voltages and waveforms are dc with respect to ground under no-signal (detuned) conditions. No mark : FM � : Imposible to measure 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. Circled numbers refer to waveforms. Signal path. F : FM J : ANALOG INPUT c : DIGITAL INPUT Caution: Pattern face side: (Side A) Parts face side: (Side B)
C Q BE These are omitted.
BCE These are omitted.
TUNING board HEADPHONE board
DISPLAY board
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.
*
� � �
� Waveforms DIGITAL Board
1 IC1101 wa (XOUT)
4.7 Vp-p
81.4ns (12.288MHz) 1V/div, 40ns/DIV
2 IC1201 9 (MCLK1)
2.8 Vp-p
73.6ns (13.59MHz) 1V/div, 40ns/DIV
3 IC1601 id (XI)
3.5Vp-p
62.5ns (16MHz) 1V/div, 40ns/DIV
9
9
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