DOWNLOAD Sony FDL-E22U (serv.man2) Service Manual ↓ Size: 1.33 MB | Pages: 21 in PDF or view online for FREE

Model
FDL-E22U (serv.man2)
Pages
21
Size
1.33 MB
Type
PDF
Document
Service Manual
Brand
Device
TV
File
fdl-e22u-sm2.pdf
Date
PREV: Sony FDL-E22U Service Manual

Sony FDL-E22U (serv.man2) Service Manual ▷ View online

– 5 –
SECTION 2
DISASSEMBLY
2-1. CABINET ASSY  REMOVAL
1
 Battery cover
3
 Rear cabinet assy
4
 Front cabinet assy
2
 Three screws
     (+P2x10)
Channel button
*When attaching, be sure to
 confirm that the correct side
 is facing up.
Power switch button
1
 One screw (+B2)
2
 A board
2-2. A BOARD REMOVAL
2-3. SERVICE POSITION
Service cord
1-900-211-84
AC power adaptor
CN201
A board
cord
Antenna
B board
CN502
– 6 –
SECTION 3
CIRCUIT ADJUSTMENTS
– A BOARD – (COMPONENT SIDE)
RV601
RV201
RV001
RV003
TU101
*4.55 
±
 0.05 V DC
MEASUREMENT
POSITION
ADJUSTMENT
LOCATION
ILLUSTRATION AND SHAPE
AND NUMBER
ADJUSTMENT ITEM AND PROCEDURE
EQUIPMENT
AND SIGNAL
A BOARD ADJUSTMENT
+4.5 ADJUSTMENT
Measure *JL with a *digital voltmeter and adjust *RV for the
*Voltage.
 *Digital
Voltmeter
 *JL61
 *RV601
– 7 –
JL06(CS)
JL61(4.5V)
Fig 1.
Fig 2.
Display bar
Channel No.
21
15k
Ω
47k
Ω
*
MEASUREMENT
POSITION
ADJUSTMENT
LOCATION
ILLUSTRATION AND SHAPE
AND NUMBER
ADJUSTMENT ITEM AND PROCEDURE
EQUIPMENT
AND SIGNAL
CHANNEL DISPLAY POSITION ADJUSTMENT
1. Insert variable resister (47 k
Ω
) and resister (15 k
Ω
) between
JL06 and JL61. (Fig 1.)
2. Short circuitry between JL04 and JL60 (GND).
3. Power switch in 
I
.
4. Recieve 21CH then adjust channel No. display position by *RV
to be in the *Specification.
5. Recieve 68CH then adjust channel No. display position by *RV
to be in the *specification.
6. Repeat the procedures 9 and 10 in a few times to be in the
specification for both of 21CH and 68CH.
7. Recieve 40CH then check and confirm position of the display
bar in the specification.
8. Release the variable resister and resister out and open the short
circuitry between JL04 and JL60.
 S601
 *RV003
 *RV001
*Channel No. and display bar are to be in line.
*Channel No. and display bar are to be in line.
– 8 –
– B BOARD – (COMPONENT SIDE)
RV402
RV301
1. Receive a *signal
2. Check and confirm waveform at *JL30 by *oscilloscope to be in
the *specification.
3. Connect oscilloscope CH1 to *JL34, then vary *RV and confirm
picture contrast of screen changes relevantly.
4. Connect oscilloscope CH2 to *JL40, then adjust amplitude of A
by *RV to be in the *specification.
5. Connect oscilloscpe CH2 to *JL40 and confirm leading edges of
C and D to be in the area of  
˜ .
*JL40 (AUTO C)
JL34
(CH1)
JL40
(CH2)
0 IRE
100 IRE
C
D
*
A=1.8
±
0.2V
Picture contrast
is varies.
MEASUREMENT
POSITION
ADJUSTMENT
LOCATION
ILLUSTRATION AND SHAPE
AND NUMBER
ADJUSTMENT ITEM AND PROCEDURE
EQUIPMENT
AND SIGNAL
B BOARD ADJUSTMENT
GRAY SCALE SIGNAL ADJUSTMENT
* 10-gradation
   gray scale
* Oscilloscope
*JL30 (VIDEO)
*JL34(G)
*JL40 (AUTO C)
*RV402
*RV402
*0.62 
±
 0.05Vp-p (0 IRE - 100 IRE)
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