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SPP-S9003
19
19
SECTION 6
DIAGRAMS
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.
•
C
: panel designation.
•
U
: B+ Line.
• Power voltage is dc 9V and fed with regulated dc power
supply from external power voltage jack (J301 on the
BASE MAIN board).
• Power voltage is dc 12V and fed with regulated dc power
supply from modular jack (MJ101 on the BASE MAIN
board) with 100
Ω
in series.
• Power voltage is dc 3.6V and fed with regulated dc power
supply from battery jack (HAND MAIN board).
• Voltages and waveforms are dc with respect to ground
under no-signal conditions.
no mark : Talk
• Voltages are taken with a VOM (Input impedance 10 M
Ω
).
Voltage variations may be noted due to normal produc-
tion tolerances.
• Waveforms are taken with a oscilloscope.
Voltage variations may be noted due to normal produc-
tion tolerances.
• Circled numbers refer to waveforms.
• Signal path.
N
: RX
O
: TX
P
: bell
Note on Printed Wiring Boards:
Note:
•
X
: parts extracted from the component side.
•
b
: Pattern from the side which enables seeing.
1
WAVEFORMS
– BASE UNIT SECTION –
IC501
5
OSCI
4 Vp-p
9.6 MHz
1
– HAND SET SECTION –
IC401
5
OSCI
4 Vp-p
9.6 MHz
Note:
The components identified by mark
!
or dotted line with
mark
!
are critical for safety.
Replace only with part number specified.
6-1. IC BLOCK DIAGRAM
• HAND MAIN Board
IC502 S-24C01AFJA-TB-01
LOGIC
DOUT/ACK
ADDRESS/COUNTER
DATA WORD
Y DEC
SERIAL MUX
EEPROM
DATA REGISTER
X DEC
H. V. PUMP/TIMING
LOGIC
CONTROL
SERIAL
R/W
INC
LOAD
EN
LOGIC
STOP
START
3
6
2
5
1
7
8
4
DIN
DOUT
VCC
TEST
SCL
SDA
NC
NC
NC
GND
Содержание SPP-S9003
Страница 1: ...1 MICROFILM SPP S9003 E Model SPECIFICATIONS SERVICE MANUAL CORDLESS TELEPHONE ...
Страница 3: ...3 SECTION 1 GENERAL This section is extracted from instruction manual ...
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