Schematic Diagram - Base Key Board - Sony SPP-A2770 Service Manual

6-10. SCHEMATIC DIAGRAM – BASE KEY Board – •
CN702
R710
15P
4.7k
R711 4.7k
R712 4.7k
R713 4.7k
R714 4.7k
R715 4.7k
R717 4.7k
R718 4.7k
R719 4.7k
R720 4.7k
(Page 30)
R721 4.7k
R722 4.7k
R723 4.7k
R724
CN704
4.7k
3P
(Page 30)
CN703
7P
COL5
ROW1
ROW2
ROW3
COL4
COL3
COL2
(Page 30)
See page 25 for Note on Schematic Diagram.
TP710 2G
TP711 2A
TP712 2F
TP713 2B
LED701
TP714 1B TOD-4201BRN
7 SEGMENTS LED
TP715 1F
(MESSAGE COUNTER)
TP716
TP717 1A
TP718 1G
TP719 1C
TP720 1E
TP721 1D
TP722 2D
TP723 2E
D705
TP724 2C BR1111C
ANSWER
ON/OFF
D704
TP736
PY1111C
TP737
IN USE
TP738
D706
BR1111C
CHARGE
TP725
TP727
TP728
TP729
K721
TP732 QUICK
VOL -
K716 SKIP
TP733
TP734
K722
HANDSET
VOL +
K717
LOCATOR
K723
REVIEW ERASE
K718
REPEAT
K724
K719 GREETING
DAY/TIME PLAY
K726
MEMO REC
K727
MESSAGE
PLAY/STOP
K728
ANSWER
ON/OFF
K729
GREETING
REC
35 35
SPP-A2770