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參數(shù)資料
| 型號： | CPD-E200E |
| 英文描述： | Monitor_ICs:CXA2067S LM2415 CXD9516P H8D2957 uPC4558G2 TDA8177 uPC6757CS LA6500-FA LA6500-FA TEA1504/N2 BA00AST-V5 TLP621D4-Y-LF2T TL1431CZ-AP PQ12RD8S BA05T TA7805S CXA8070AP STK391-110 LA6510 CXD9528S CXA8071CP PST9143NL |
| 中文描述： | Monitor_ICs：CXA2067S LM2415 CXD9516P H8D2957 uPC4558G2 TDA8177 uPC6757CS LA6500發(fā)LA6500發(fā)TEA1504/N2 BA00AST - V5的TLP621D4 - Y型LF2T TL1431CZ -美聯(lián)社PQ12RD8S BA05T TA7805S CXA8070AP STK391 - 110 LA6510 CXD9528S CXA8071CP PST9143NL |
| 文件頁數(shù)： | 16/46頁 |
| 文件大?。?/td> | 3051K |
| 代理商： | CPD-E200E |
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CPD-E200E
SECTION 3
SAFETY RELATED ADJUSTMENT
Part Replaced (
[
)
RV501
HV ADJ
When replacing or repairing the shown below table, the
following operational checks must be performed as a
safety precaution against X-rays emissions from the unit.
HV Protector Circuit Check
Using an external DC Power Supply, apply the voltage
shown below between cathode of D517 on D board and
GND, and confirm that the HV HOLD DOWN circuite
works. (TV Raster disappears)
Standard voltage : 35.80
±
0.01 V DC
Check Condition
Input voltage : 120
±
2 V AC
Input signal
Beam control : CONT : min, BRT : min
: White cross hatch at 69.0kHz
Beam Current Protector Check
An ammeter in series between FBT pin
!]
on D board
and GND, then, decrease gradually the resistance of the
variable resistor from maximum to minimum, and con-
firm that the Beam Current Protector Circuite works
(TV Raster disappears). The current must be within the
range shown below.
Standard current : 1.55
-0.10
mA
Check Condition
Input voltage : 120
±
2 V AC
Input signal
Beam control : CONT : min, BRT : min
: White cross hatch at 31.0kHz
B+ Voltage Check
Standard voltage : 179.0
±
3.0 V DC
Check Condition
Input voltage : 120
±
2V AC
Note : Use NF power supply or make sure that
distortion factor is 3% or less.
Input signal
: White cross hatch at 69.0 kHz
Beam control : CONT : max, BRT : center
HV Regulator
Circuit Check
HV Protector
Circuit Check
Beam Current
Protector Circuit
Check
Part Replaced (
]
)
D board IC501, C532, C534,
C539, C553, C554,
C555, C556, C558,
C561, R541, R542,
R544, R564, R567,
R568, RV501,
T501 (FBT)
D board IC607, IC901, D515,
D517, C540, C542,
C544, R510, R543
R547, R549, R552,
R595,
T501 (FBT)
D board IC605, IC607, IC901,
C535, C541, R545,
R546, R548, R550,
R596, R934,
T501 (FBT)
*
Confirm one minute later turning on the power.
HV Regulator Check
1) Input cross hatch signal (white lines on black).
: fH = 69.0kHz
2) CONT maximum and BRT center.
3) Cut off Screen VR (G2).
4) Input voltage : 120
±
2 VAC
5) Confirm that the voltage is within the voltage range
shown below.
Standard voltage : 27.0kV
±
0.2kV DC
6) When replacing components identified by
]
, make
sure to recheck the High Voltage.
7) Verify the High Voltage as shown above (27.0 kV
±
0.2kV) is within specification. If not, set H. SIZE
data at minimum (-127) and then adjust RV501 on
"D" Board.
3-1
8) After adjusting the High Voltage within specifica-
tion, put the RV cover on RV501 as shown below
and apply sufficient amount of RTV around RV501.
RV501
1
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