Sony KP-43T70, KP-46C70, KP-48S70, KP-48S72, KP-53S70 Service Manual
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SERVICE MANUAL |
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RA-3 CHASSIS |
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MODEL |
COMMANDER |
DEST. |
CHASSIS NO. |
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MODEL |
COMMANDER |
DEST. |
CHASSIS NO. |
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KP-43T70 |
RM-Y906 |
US |
SCC-P14GA |
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KP-48S72 |
RM-Y906 Canadian |
SCC-P14KA |
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KP-43T70 |
RM-Y906 Canadian |
SCC-P14GA |
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KP-53N74 |
RM-Y906 |
US |
SCC-P14EA |
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KP-46C70 |
RM-Y906 |
US |
SCC-P14JA |
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KP-53N74 |
RM-Y906 Canadian |
SCC-P14EA |
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KP-46C70 |
RM-Y906 Canadian |
SCC-P14JA |
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KP-53S70 |
RM-Y906 |
US |
SCC-P14DA |
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KP-48S70 |
RM-Y906 |
US |
SCC-P14HA |
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KP-53S70 |
RM-Y906 Canadian |
SCC-P14DA |
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KP-48S70 |
RM-Y906 Canadian |
SCC-P14HA |
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KP-61S70 |
RM-Y906 |
US |
SCC-P14FA |
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KP-48S72 |
RM-Y906 |
US |
SCC-P14KA |
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KP-61S70 |
RM-Y906 Canadian |
SCC-P14FA |
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CORRECTION -1 |
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Subject : Correction of set-up adjustments |
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File this correction with the service manual. |
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TABLE OF CONTENTS |
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Section |
Title |
Page |
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3. SET-UP ADJUSTMENTS |
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3-1. |
Screen Voltage Adjustment (Coarse Adjustment) ................................. |
2 |
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3-2. |
Screen (G2) Adjustment (Fine Adjustment) ......................................... |
2 |
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3-3. |
Deflection York Tilt Adjustment ........................................................... |
2 |
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3-4. |
Focus Lens Adjustment ......................................................................... |
2 |
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3-5. |
Focus VR Adjustment ........................................................................... |
3 |
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3-6. |
2-Pole Magnet Adjustment (Green, Red) ............................................. |
3 |
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3-7. |
4-Pole Magnet Adjustment ................................................................... |
3 |
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3-8. |
Defocus Adjustment (Blue) .................................................................. |
3 |
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3-9. |
Electrical Adjustment by Remote Commander .................................... |
4 |
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3-10. |
Registration Adjustment (PJE) .............................................................. |
9 |
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3-11. |
Auto Registration Error Code List ..................................................... |
12 |
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Please file according to model size. .......... 
43 
46 
48 
53 
61
KP-43T70/46C70/48S70/ |
SECTION 3 |
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48S72/53N74/53S70/61S70 |
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RM-Y906
SET-UP ADJUSTMENTS
3-1. SCREEN VOLTAGE ADJUSTMENT (COARSE ADJUSTMENT)
1.Receive the Monoscope signal.
2.Set 50% BRIGHTNESS and minimum PICTURE.
3.Turn the red VR on the FOCUS block all the way to the left and then gradually turn it to the right until the point where you can see the retrace line.
4.Next gradually turn it to the left to the position where the retrace line disappears.
R G B
SCREEN
R G B
FOCUS
Fig. 3-1
FOCUS block
3-2. SCREEN (G2) ADJUSTMENT (FINE ADJUSTMENT)
Fine Mode is recommended to set screen controls to their optimal condition. It is necessary to build the simple jig, illustrated below, using 3-watt resistors. Please note, that if the proper voltage is not obtained with their listed values, resistors, then please increase or decrease one of the values in the resistor network to obtain the correct voltage.
1.Select VIDEO1 mode without signals.
2.Connect G2 JIG.
3.SW on JIG.
4.Connect an oscilloscope to the TP701(KR), TP732(KG) and TP761(KB) of CR board, CG board and CB board.
5.Adjust R, G and B screen voltage to 170-173V with screen VR on the Focus block.
K
G2 JIG
SW
3.3k 5.6k 5.6k 5.6k
210V |
GND |
the mode Cover the both green and red picture lenses with the lens caps is aligned the same as was done for green.
Note: Instead of items 3 and 6, you can cut off the unnecessary color beams by controlling the service mode VPNT 28 RON, 29 GON, and 30 BON.
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4-pole magnet |
2-pole magnet |
Deflection yoke |
Fig. 3-3 |
Anode cap |
3-4. FOCUS LENS ADJUSTMENT
In this adjustment, use the remote commander in the service mode.
For details of the usage of the service mode and the remote commander, please refer the item 3-9. ELECTRICAL ADJUSTMENT BY REMOTE COMMANDER.
1.Loosen the lens screw.
2.Set to the service mode.
3.Receive the all-white signal.
4.Cover the both red and blue picture lenses with the lens caps to show only the green color.
5.Set to PJE, and press 6 to display the test signal (crosshatch)“ on the screen.
6.Turn the green lens to adjust to the optimum focus point with the test signal.
7.Tighten the lens screw.
8.Cover the both green and blue picture lenses with the lens caps to show only the red color.
9.Set to PJE, and press 6 to display the test signal (crosshatch)“ on the screen.
10.Adjust red CRT lens just the same as green.
11.Cover the both green and red picture lenses with the lens caps to show only the blue color.
175 ± 2V |
pedestal level |
GND
Fig. 3-2
3-3. DEFLECTION YOKE TILT ADJUSTMENT
1.Receive the Monoscope signal.
2.Set in service mode.
3.Cover the both red and blue picture lenses with the lens caps to show only the green color.
4.Loosen the deflection yoke set screw and align the tilt of the Deflection Yoke so that the bars at the center of the monoscope pattern are horizontal.
5.After aligning the deflection yoke, fasten it securely to the funnel-shaped portion (neck) of the CRT.
6.The tilt of the deflection yoke for red is aligned in the mode Cover the both green and blue picture lenses with the lens caps and the tilt of the deflection yoke for blue is aligned with in
Test signal |
Fig. 3-4 |
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12.Set to PJE, and press 6 to display the test signal (crosshatch)“ on the screen.
13.Adjust blue CRT lens just the same as green.
14.After adjusting the items 3-5. Focus VR Adjustment, 3-6. 2- Pole Magnet Adjustment and 3-7. 4-Pole Magnet Adjustment, adjust again to the optimum focus point.
*: Every time you press 6, the test signal changes to “crosshatch+video signal” - “dots+video signal” - “crosshach(black)” - “dots(black)” - off.
Note: Instead of items 4, 8 and 11, you can cut off the unnecessary color beams by controlling the service mode VPNT 28 RON, 29 GON, and 30 BON.
– 2 –
3-5. FOCUS VR ADJUSTMENT
1.Set to the service mode.
2.Receive the all-white signal.
3.Cover the both red and blue picture lenses with the lens caps to show only the green color.
4.Set to PJE, and press 6 to display the test signal (crosshatch) on the screen.
5.Turn the green focus VR on the focus block to adjust to the optimum focus point with the test signal.
6.Cover the both green and blue picture lenses with the lens caps to show only the red color.
7.Set to PJE, and press 6 to display the test signal (crosshatch) on the screen.
8.Turn the red focus VR on the focus block to adjust to the optimum focus point with the test signal.
9.Cover the both green and red picture lenses with the lens caps to show only the blue color.
10.Set to PJE, and press 6 to display the test signal (crosshatch) on the screen.
11.Turn the blue focus VR on the focus block to adjust to the optimum focus point with the test signal.
12.After adjusting the items 3-4. Focus Lens Adjustment, 3-6. 2-
Pole Magnet Adjustment and 3-7. 4-Pole Magnet Adjustment, adjust again to the optimum focus point.
Note: Instead of items 3, 6 and 9, you can cut off the unnecessary color beams by controlling the service mode VPNT 28 RON, 29 GON, and 30 BON.
Scanning line visible.
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A |
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Minimize both A and B. |
Lens |
B |
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Fig. 3-5 Center of crosshatch Fig. 3-6
3-6. 2-POLE MAGNET ADJUSTMENT (GREEN,RED)
1.Receive the Dot signal.
2.Set in service mode.
3.Cover the both red and blue picture lenses with the lens caps to show only the green color.
4.Turn the green focus VR on the focus block to the right and set to overfocus to enlarge the spot.
5.Now align the 2-Pole Magnet so that the enlarged spot is in the center of the Just Focus spot.
6.Align the green focus VR and set for just (precise) focus.
7.Perform the same alignment for red.
KP-43T70/46C70/48S70/
48S72/53N74/53S70/61S70
RM-Y906
Use the center dot
Fig. 3-7
3-7. 4-POLE MAGNET ADJUSTMENT
1.Receive the Dot signal.
2.Set in service mode.
3.Cover the both red and blue picture lenses with the lens caps to show only the green color.
4.Turn the green focus VR on the focus block to the left and set to underfocus to enlarge the spot.
5.Now align the 4-Pole Magnet so that the enlarged spot becomes a perfect circle for green and red.
6.Perform the same alignment for blue.
Use the center dot
x
/ y
x : y = 1:1.5 (BIue)
x : y = 1:1 (Green, Red)
Fig. 3-8
3-8. DEFOCUS ADJUSTMENT (BLUE)
Note: Please adjust the blue dot to be slightly larger than red and green dots. This adjustment provides a more pleasing picture to the customer.
1.Select the video menu and set the mode to “VIVID” mode.
2.Set to the service mode.
3.Change TV mode to the video input mode.
4.Set to PJE, and press 6 to display the test signal (dots) on the screen.
5.Turn the blue focus VR on the focus block to adjust to the diameter of the dots as shown in the figure below.
[Focus adjustment point]
Lmm Max
Inch |
43" |
46" |
48" |
53" |
61" |
L |
6 |
6.5 |
7 |
8 |
9 |
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Fig. 3-9
– 3 –
KP-43T70/46C70/48S70/
48S72/53N74/53S70/61S70
RM-Y906
3-9. ELECTRICAL ADJUSTMENT BY REMOTE
COMMANDER
By using Remote Commander (RM-Y906),all circuit adjustments
can be made.
NOTE : Test Equipment Required.
1.Pattern Generator (with component outputs)
2.Frequency counter
3.Digital multimeter
4.Audio oscillator
1. METHOD OF SETTINGTHE SERVICE ADJUSTMENT MODE
SERVICE MODE PROCEDURE
1. Standby mode. (Power off)
2. DISPLAY n 5 n VOL (+) n TV POWER
on the Remote Commander.
(Press each button within a second.)
7.If you want to recover the latest values press -then [ENTER] to read the memory.
8.Press [MUTING] then [ENTER] to write into memory.
9.Turn power off.
Note: Press 8then [ENTER] on the Remote Commander to initialize or turn set off and on to exit.
2. MEMORY WRITE CONFIRMATION METHOD
1.After adjustment, remove the plug from AC outlet, and then replace the plug in AC outlet again.
2.Turn the power switch ON and set to Service Mode.
3.Call the adjusted items again and confirm they were adjusted.
3. ADJUSTING BUTTONS AND INDICATOR
SERVICE MODE ADJUSTMENT
Category Adjustment item
DATA
SERVICE VPNT VPOS 031 000000 00
(SCREEN DISPLAY)
3.The SCREEN displays the item being adjusted.
4.Press 1or 4on the Remote Commander to select the adjustment item.
5.Press 3or 6on the Remote Commander to change the data.
6.Press 2or 5on the Remote Commander to select the category.
Every time you press 2(Category up), Service mode changes in the order as shown below.
TV POWER ON
MUTING |
MUTING |
DVD/ |
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SAT/ |
POWER |
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VTR |
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CABLE |
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TV |
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SYSTEM |
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FUNCTION |
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OFF |
DVD/VTR SAT/CABLE |
TV |
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TV/VTR |
FREEZE |
SWAP |
PIP |
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m |
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N |
M |
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POSITION |
AUDIO |
ACTIVE |
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Category up |
X |
z |
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x |
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DISPLAY |
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SLEEP |
ANT |
TV/VIDEO |
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PICTURE |
CC |
MTS/SAP |
DISPLAY |
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MODE |
Data up |
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Adjustment item up |
1 |
2 |
3 |
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4 |
5 |
6 |
Data down |
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Adjustment item down |
7 |
8 |
9 |
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Category down |
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JUMP |
0 |
ENTER |
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VOL (+) |
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ENTER |
INDEX |
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GUIDE |
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RESET |
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MENU |
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VPNT |
SC |
RM-Y906 |
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VPNV |
IC |
Note : When the PJE mode is activated, which displays an |
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VPNS |
PP |
internally generated signal, several buttons on the remote |
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PJE |
DAC |
commander will have different functions than listed |
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above. Therefore, when in the PJE mode, refer to page 9 |
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3DCM |
PI |
for button functions. |
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TONE |
ID |
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DSP |
CCD |
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MC |
OP |
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– 4 –
data
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