Read Sharp R-750AM (serv.man2) Service Manual online
9
750A -
43-54
SEG0 -
OUT
Segment data signal.
SEG11
Connected to LCD.
The relation between signals are as follows:
The relation between signals are as follows:
LSI signal (Pin No.)
LCD (Pin No.)
LSI signal (Pin No.)
LCD (Pin No.)
SEG 0 (1) ............................. S12(4)
SEG 0 (1) ............................. S12(4)
SEG 6 (7) ......................... S6(10)
SEG 1 (2) ............................. S11(5)
SEG 7 (8) ......................... S5(11)
SEG 2 (3) ............................. S10(6)
SEG 8 (9) ......................... S4(12)
SEG 3 (4) ............................... S9(7)
SEG 9 (10) ....................... S3(13)
SEG 4 (5) ............................... S8(8)
SEG 10 (11) ..................... S2(14)
SEG 5 (6) ............................... S7(9)
SEG 11 (12) ..................... S1(15)
55-57
SEG12-
OUT
Terminal not used.
SEG14
58
VDD
IN
Power source voltage input terminal.
Connected to GND.
Connected to GND.
59-64
SEG15-
OUT
Terminal not used.
SEG20
Pin No.
Signal
I/O
Description
WARNING: Before carrying out any work carry out 3D checks
1) Disconnect the supply.
2) Door opened, and wedged open.
3) Discharge high voltage capacitor.
WIRING / RE-WIRING
RE-WIRING
Ensure the following:
1.
Wires must not touch:
a)
High voltage parts.
(Magnetron, high voltage transformer, high voltage capacitor and high voltage rectifier assembly)
(Magnetron, high voltage transformer, high voltage capacitor and high voltage rectifier assembly)
b)
Parts that become hot.
(Heating elements, oven lamp, oven cavity magnetron and high voltage transformer)
(Heating elements, oven lamp, oven cavity magnetron and high voltage transformer)
c)
Sharp edges.
(Bottom plates, oven cavity, waveguide flange, chassis support and other metallic parts)
(Bottom plates, oven cavity, waveguide flange, chassis support and other metallic parts)
d)
Movable parts.
(Fan blade, any motor, switch, switch lever and open button)
(Fan blade, any motor, switch, switch lever and open button)
2.
Positive lock connectors are fitted correctly. Ensure the locking pin is located correctly.
3.
Wires are connected correctly as per pictorial diagram.
4.
No wire leads are trapped by the outer wrap.
TOUCH CONTROL ASSEMBLY/ DESCRIPTION OF LSI
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