Printed Wiring Boards -Key Section - Sony TAM-100 Service Manual

Ver 1.1 2001.06
Q Q
3 7 6 3 1 5 1 5 0
3-7. PRINTED WIRING BOARD — KEY SECTION —
1 2
KEY BOARD
A
MEMO
16
ERASE
B
1
GREETING SET/REC TIME
C
T E 3
L 1 3 9 4 2 2 9 6 5 1 3
D
SLOW/
REPEAT
1
E
MAIL BOX1
PLAY/STOP
F
w w w
Refer to page 20 for Notes.
z
3 4
9
ANSWER
ON/OFF
LED1
ANSWER
ON/OFF
8
LED5
VOLUME–
VOLUME+
LED4
3
LED3
QUICK/SKIP
2
2
W1
5 10 15 20
LED2
Serial number
1
4,000,000 and before
Serial number
4,000,001 and later
A A
MAIN BOARD MAIN BOARD
(Serial number (Serial number
4,000,000 and before) 4,000,001 and later)
x a o
. i
– 19 –
http://www.xiaoyu163.com
THIS NOTE IS COMMON FOR PRINTED WIRING
BOARDS AND SCHEMATIC DIAGRAMS.
5
(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
specified.
• C : panel designation.
• : B+ Line.
• Power voltage is dc 12V and fed with regulated dc
power supply from external power voltage jack.
• Voltage and waveforms are dc with respect to ground
under no-signal conditions.
• Voltages are taken with a VOM (Input impedance 10 MΩ).
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
: AUDIO
For printed wiring boards.
Note :
• X : parts extracted from the component side.
•
x : parts mounted on the component side.
• : Through hole.
z
• : Pattern from the side which enables seeing.
Q Q
(The other layers' patterns are not indicated.) 3 7
Caution:
Pattern face side: Parts on the pattern face side seen from the
(Side B) pattern face are indicated.
Parts face side: Parts on the parts face side seen from the
(Side A) parts face are indicated.
27
25
• IC BLOCK DIAGRAM
New type: Serial number 4,000,001 and later
U2 TC58A04F
11
1-673-413-
(11)
NC
11
27 – 15
28
1-682-078-
(11)
4M BIT CHARGE PUMP/
MEMORY CONTROL GATE
CELL ARRAY
DATA LATCH
INTERFACE/
CONTROL LOGIC
1 2 3 4 5 6 7
u 1 6 3
y
http://www.xiaoyu163.com
2 4
8 9 9
Former type: Serial number 4,000,000 and before
• Waveform
1
4.096MHz
U1 !§ (XOUT)
1 / W or less unless otherwise
4
New type: Serial number 4,000,001 and later
• Waveform
1
4.096MHz
U1 td (XOUT)
6 3 1 5 1 5 0 8 9
DRIVE
m
8 – 14
NC
c o
.
– 20 –
2
8 9 9
5.6Vp-p
5.6Vp-p
2 4 9 8 2 9 9