Sony TAM-100 - Manual (Page 7)

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TAM-100
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 Ω and 1 / 4 W or less unless otherwise
specified.
• ¢ : internal component.
• C : panel designation.
• U : B+ Line.
• Voltage and waveforms are dc with respect to ground
under no-signal conditions.
no mark : Add to DC 12V and fed with regulated dc power
supply from external power voltage jack.
∗ : Impossible to measure
• Indication of transistor
2-2. PRINTED WIRING BOARD — KEY SECTION — • Waveform
1
U1 !§ (XOUT)
5.6Vp-p
4MHz
• Voltages are taken with a VOM (Input impedance 10 M Ω ).
Voltage variations may be noted due to normal production tol-
erances.
• Waveforms are taken with a oscilloscope.
Voltage variations may be noted due to normal production tol-
erances.
• Circled numbers refer to waveforms.
• Signal path.
F : AUDIO
• Abbreviation
CND : Canadian model
For printed wiring boards.
Note:
• : carbon pattern
• X : parts extracted from the component side.
• ¢ : internal component.
• b : Pattern from the side which enables seeing.
Q
C
These are omitted
E B
TIME VOL+
VOL-
ERASE
GREETING
SET/REC
MAIL BOX3
SLOW/
REPEAT
MAIL BOX1
PLAY/STOP
QUICK/SKIP
LED5
16 9
1 8
ANSWER
ON/OFF
27 1
MEMO
MAIL BOX2
W1
A
K
LED1
MAIN BOARD A
(Page 8)
09 1-673-413-
11
KEY BOARD
A
K
LED4
A
K
LED3
A
K
LED2