Read Sharp ER-A850 (serv.man2) Service Manual online
9. CFL unit
(1) CFL specifications (Harrison Electric Col, Ltd.
φ
3, S type, length = 108mm)
Rated current
: 5mA
Discharge lamp
: 275 Vrms
Discharge start voltage : 550Vrms max. (at 0°C)
(2) CFL life
The life means when one of the following occurs.
1. The lamp wall brightness reaches 50 %.
2. When the lamp is not lighted normally.
The following table must be satisfied under the following conditions.
Ambient temperature
: Normal temperature (20
∼
35°C, no wind)
lamp current
: 5mA
Lighting condition
: Continuous lighting
Life
10000 hours or more
(3) Interface
Pin No.
Signal
Function
1
GND
GND line
2
N.C
—
3
HV
High voltage line
4
N.C
—
With connector: EHR-2 (Nihon Press Terminal)
10. Reliability test
Test item
Test condition
1. Leaving under
high temperature
60°C
200 hours
2. Leaving under low
temperature
–20°C
200 hours
3. Leaving under
high temperature
and high humidity
and high humidity
40°C 90%RH
200 hours
4. Heat shock
5 cycle
5.
Single unit
vibration
vibration
Vibration: 10
∼
55
∼
10 Hz
Amplitude: 1.5mm
Time:
Time:
each 15 min in X, Y, Z directions
6. Single unit shock
490m/s
2
or above
(each 5 times in X, Y, Z directions)
Note 1: Measurement must be performed after leaving the unit in a
room for 4 hours or more.
(Measurement reference)
1. Free from blurs.
2. Free from abnormal lighting.
3. Free from abnormal operations.
1. Free from blurs.
2. Free from abnormal lighting.
3. Free from abnormal operations.
11. Lot indication
1) Composition
The manufacturing lot No. is indicated with 4 digits.
1:
Year
2:
Month
3, 4:
Day
2) Codes
(1) Code for year
The value at the end of the year
Example: 1990
→
0, 1991
→
1
(2) Code for month
January
∼
September : Numeral figure corresponding to each month.
October
∼
December : The head character of each month name
Remark: October
→
C, November
→
N, December
→
D
(3) Code for day
1
∼
9:
"0" and the corresponding day number.
10
∼
31:
Corresponding day number.
Example: 5
→
05, 12
→
12, 30
→
30
(4) Display example
1992, March 12
→
2312
1993 November 3
→
3N03
3) Indication together with other codes
In principle, the manufacturing lot No. is indicated individually. If it
cannot help indicate it with other codes such as factory code, line
code, lot code, and change code, put a hyphen before these codes.
cannot help indicate it with other codes such as factory code, line
code, lot code, and change code, put a hyphen before these codes.
4) Display
The display should be easily visible in non-erasable method.
12. Note for handling
(1) The LCD elements are made of glass. BE careful not to give them
strong mechanical shock, or they may be broken. Use extreme
care not to break them.
care not to break them.
(2) If the LCD element is broken and the liquid is leaked, do not lick it.
If the liquid is attached to your skin or cloth, immediately clean with
soap.
soap.
(3) Use the unit under the rated conditions to prevent against dam-
age.
(4) Be careful not to drop water or other liquid on the display surface.
(5) The reflection plate and the polarizing plate are easily scratched.
BE careful not to touch them with a hard thing such as glass,
tweezers. Never hit, push, or rub the surface with hard things.
tweezers. Never hit, push, or rub the surface with hard things.
(6) When installing the unit, be careful not to apply stress to the LCD
module. If an excessive stress is applied, abnormal display or
uneven color may result.
uneven color may result.
25˚C [5]
60˚C [30]
-20˚C [30]
1
2
3
4
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