Sharp ER-A460 (serv.man12) Service Manual / Technical Bulletin ▷ View online
IR UNIT CHANGE
[Parts changes]
1. Model name:
ER-A460/A470/A490
2. General:
A moduler IR Unit has been adopted for use to make serviceability better.
3. Action:
((For production))
From June 1997 production
4. Parts change:
1/2
Ref
No.
No.
Model
name
name
Version
P/G No.
Current parts
New parts
Parts name
Effec-
tive
time
tive
time
Inter-
change-
ability
change-
ability
Note
Parts code
Parts code
Price
rank
1
ER-A460
etc.
All
1 - 4
2 - 4
9 -901
2 - 4
9 -901
CPWBN7460BH01
CPWBN7529BH01
BE
IR PWB unit
Jun. ’97
∗
1
Included
No.2 - No.6
2
—
—
QCNCM7179BH0E
AD
IR connector
5pin (CN1)
5pin (CN1)
6
—
3
—
VHIRPM850ACB1
EZ
IR module IC
(IC1)
(IC1)
4
—
VCEAGA1CW476M DD
AL. condenser
(47
(47
µ
F/16V SG)
(C1)
5
—
VRD-RC2EY100J
AA
Resistor 1/5W
10 ohm J (R2)
10 ohm J (R2)
6
—
VRD-RC2EY8R2J
AA
Resistor 1/5W
8.2 ohm J (R1)
8.2 ohm J (R1)
<Interchange>
1. Interchangeable.
4. Not interchangeable.
2. Current type can be used in place of new type.
New type cannot be used in place of current type.
5. Interchangeable if replaced with same types of
related parts in use.
3. Current type cannot be used in place of new type.
New type can be used in place of current type.
6. Others.
∗
1 Communication between the set with a new IR unit (CPWBN7529BH01) mounted and another with an old IR unit
(CPWBN7460BH01) mounted sometimes shortens the communication distance, and carry out communication with the
sets as close as possible.
sets as close as possible.
Parts marked with " ! " is important for maintaining the safety of the set.
Be sure to replace these parts with specified ones for maintaining the safety and performance of the set.
Be sure to replace these parts with specified ones for maintaining the safety and performance of the set.
5. Others:
A circuit diagram and an IR pattern drawing will be attached hereinafter.
Date :
Model :
Ref :
Colour
Code :
1st December 1997
ERA460
A460-012
White
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TECHNICAL BULLETIN
Sharp Electronics (UK) Ltd, Technical Support Group
2/2
R1 : 8.2
Ω
R2 : 10
Ω
C1 : 47
µ
F/16V
C2 :
IC1
VCC
ASK
IRDA
GND
IRTX
ASK
IRDA
GND
IRTX
CN1
LE
D
V
CC2
TX
IN
GN
D
R
ESET
V
CC1
RX
O
U
T
P
W
RDN
GN
D
1
2
3
4
5
6
7
8
9
(C
2
)
R1
R2
C1
Display