Sharp GX20, Руководство по обслуживанию

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GX20
5 – 1
CONFIDENTIAL
OZ/IQ/YO/Calc GX20 Service Manual TQGX20 Market E
CHAPTER 5.
SCHEMATIC DIAGRAM AND WIRING SIDE OF P.W.BOARD
[1] Notes on schematic diagram
• Resistor:
To differentiate the units of resistors, the symbols K and M are used.
The symbol K means 1000 ohm and the symbol M means 1000
kohm. The resistor without any symbol is an ohm resistor.
• Capacitor:
To indicate the unit of capacitor, the symbol is used.
The symbol P means pico-farad and the unit of the capacitor with-
out such a symbol is microfarad. As to electrolytic capacitor, the
expression “capacitance/withstand voltage” is used.
(CH), (RH), (UJ): Temperature compensation
(ML): Mylar type
(S): Styrol type
(PP): Polypropylene type
• The indicated voltage in each section is the one measured by Digi-
tal Multimeter between such a section and the chassis with no sig-
nal given.
• Conditions: SIM card inserted, power on, in stand-by mode
(opened)
• Schematic diagram and Wiring Side of P.W. Board for this model
are subject to change for improvement without prior notice.
• Parts marked with “ ” are important for maintaining the safety of
the set. Be sure to replace these parts with specified ones for main-
taining the safety and performance of the set.
[2] Types of transistor and LED
TOP VIEW
1SS388
1SS405
RB160M30
RB520S30
RB521S30
RB551V30
B
(3)
(G)
1
(S)
2
(D)
3
(G)
6
(G)
5
(D)
4
(S)
C
(2)
(D)
E
(1)
(S)
2SA1955 A
2SA1989 SR
2SC4617 R
2SK3019
MCH3443
RT1N144 U
TOP
VIEW
NSCW335T
TOP VIEW
CPH6311
FDG311 N EMD6
EMD9
EMD12
EMG9
UM6K1
D
D
G
D
D
S
TOP
VIEW
1
3
6
4
EMH11
1
3
(2)
2
(3)
(1)
TOP
VIEW
1
3
6
4
TOP
VIEW
1
(G)
2
(S)
3
(G)
6
(D)
5
(S)
4
(D)
FDC6322 C
TOP
VIEW
TOP VIEW
CUS01
HN2S01FU
TOP VIEW
GM56271A
TOP VIEW
TOP VIEW
YPY1105C
TOP VIEW
RD22SL
RSB6.8S