It's great to be able to obtain a precious technical information for a real old equipment. The one I got helps me a lot in the area of wiring diagram to repair my antique. PDF gave me clear enough information to find out thr details. Thanks for giving me the oppotunity to be able to access to almost vanished informations.
Another excellent aquisition. Fine detailed manual. Thanks
Text excerpt from page 25 (click to view)
HCD-VR50/VR70
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. � ¢ : internal component. � 2 : nonflammable resistor. � 1 : 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. 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. F : FM g : VIDEO/MD E : PB (DECK A) d : PB (DECK B) G : REC (DECK B) m : CHROMA n :Y o : VIDEO J : CD c : digital out � Abbreviation EA : Saudi Arabia model. SP : Singapore model. MY : Malaysia model. HK : Hong Kong model. TW : Taiwan model. IA : Indonesian model. TH : Thai model.
WAVEFORMS � CD SECTION � 1
1.3Vp-p
� VIDEO SECTION � 1
4Vp-p
� MAIN (2/5) SECTION � 7
4.6Vp-p
1
5.5Vp-p
10MHz
44.1kHz
16MHz
IC502 !£ XOUT IC101 %º RFAC
IC509 !ª LRCK
IC501 !¡ XC-OUT
2
2.5V H 1Vp-p
8
4.8Vp-p
2
5.2Vp-p
2
2.11MHz
32.768kHz
APPROX 500mVp-p
IC505 &� COUT
IC509 !¶ BCLK
IC501 !£ X-OUT
IC101 $¡ TE
3
2.5V
2Vp-p
9
4.8Vp-p
3 � PANEL FL SECTION � 1
3.4Vp-p
APPROX 200mVp-p
H
33.8MHz
IC505 ^ª YOUT IC101 #ª FE
IC504 8 384FS
4 4
2.6Vp-p
H 1Vp-p
0
12.5MHz
3.8Vp-p
IC601 &� X OUT
�
7.5µsec
IC401 7 COUT
IC504 6 27M
27MHz
IC101 @� MDP
5
2Vp-p
!¡
2.8Vp-p
� �
H
33.8MHz
IC401 1 YOUT
IC504 !�
6
5.8Vp-p 27MHz
IC509 1 XT1
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. � 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)
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.
� Indication of transistor
C Q These are omitted
