Sony KF-50XBR800RM-Y912 User manual

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MODEL COMMANDER DEST. CHASSIS NO.
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KF-50XBR800RM-Y912 US
KF-50XBR800RM-Y912 Cana ian
KF-60XBR800RM-Y912 US
KF-60XBR800RM-Y912 Cana ian
/&'352-(&7,2179
RM-Y912
RM-Y912
KF-50XBR800/KF-60XBR800

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Projection System 3 LCD Panels, 1 lens projection system
LCD Panel 1.35 inch TFT LCD panel Approx. 3.15 million dots 1,049,088 pixels)
Projection Lens High Performance, large diameter hybrid lens F2.4
Antenna 75 ohm external terminal for VHF/UHF
Lamp UHP lamp, 100W
XL-2000U
Television System NTSC, American TV Standard
Screen Size measured diagonally) KF-50XBR800: 50 inches, KF-60XBR800: 60 inches
Channel Coverage
VHF 2-13
UHF 14-69
CATV 1-125
Power Requirements 120V, 60 Hz
Number of Inputs/Outputs
DVI-HDTV 1 terminal 3.3 V T.M.D.S., 50 ohms
The DVI-HDTV input terminal is compliant with the EIA-861 standard and is not intended for use
with personal computers.
Video IN) 4 1 Vp-p, 75 ohms unbalanced, sync negative
S Video IN) 3 Y: 1 Vp-p, 75 ohms unbalanced, sync negative
C: 0.286 Vp-p Burst signal), 75 ohms
Audio IN) 6 500 mVrms 100% modulation)
Impedance: 47 kiloohms
AUDIO VAR/FIX) 1 500 mVrms at the maximum volume setting Variable)
500 mVrms Fixed)
Impedance output): 2 kiloohms
MONITOR OUT 1 Video: 1 Vp-p 75 ohms unbalanced, Sync negative
Audio: 500 mVrms 100% modulation)
Impedance output): 1 kiloohms
CONTROL S IN/OUT) 1 minijacks
Component Video Input 2 Y, PB , PR) Y: 1.0 Vp-p, 75 ohms unbalanced, sync negative
PB: 0.7 Vp-p, 75 ohms
PR: 0.7 Vp-p, 75 ohms
RF Inputs 2
Converter 1
Speaker Output 15 W = 2
Dimensions W = H = D) KF-50XBR800: 1,376 = 964 = 415 mm 54 1/4 = 38 = 16 3/8 inches)
KF-60XBR800: 1,618 = 1,103 = 542 mm 63 3/4 = 43 1/2 = 21 3/8 inches)
Mass KF-50XBR800: 50 kg 110 lb 4 oz), KF-60XBR800: 66 kg 145 lb 8 oz)
Power Consumption
In Use 220 W
In Standby Under 1 W
Supplied Accessories
Remote Control RM-Y912
AAA Batteries 2 supplied for remote control
Cleaning Cloth 1
Hex key wrench 1
Brackets with screws 2
Optional Accessories

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TV Stand SU-GW1
Lamp XL-2000U
AV Cable VMC-810/820/830 HG
Audio Cable RKC-515HG
Control S Cable RK-G69HG
Component Video Cable VMC-10/30 HG
AV Receiver STR-V555ES or equivalent
Memory Stick media 8MB MSA-8A), 16MB MSA-16A), 32MB MSA-32A), 64MB MSA-64A),
128MB MSA-128A)
Design and specifications are subject to change without notice.

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After correcting the original service problem, perfom the follow-
ing safety checks before releasing the set to the customer:
l. Check the area of your repair for unsoldered or poorly-sol-
dered connections. Check the entire board surface for solder
splashes and bridges.
2. Check the interboard wiring to ensure that no wires are
“pinched” or contact high-wattage resistors.
3. Check that all control knobs, shields, covers, ground straps,
and mounting hardware have been replaced. Be absolutely
certain that you have replaced all the insulators.
4. Look for unauthorized replacement parts, particularly tran-
sistors, that were installed during a previous repair. Point them
out to the customer and recommend their replacement.
5. Look for parts which, through functioning, show obvious
signs of deterioration. Point them out to the customer and
recom mend their replacement.
6. Check the line cords for cracks and abrasion. Recommend
the replacement of any such line cord to the customer.
7. Check the condition of the monopole antenna if any). Make
sure the end is not broken off, and has the plastic cap on it.
Point out the danger of impalement on a broken antenna to
the customer, and recommend the antenna’s replacement.
8. Check the B+ and HV to see they are at the values specified.
Make sure your instruments are accurate;be suspicious of
your HV meter if sets always have low HV.
9. Check the antenna temminals, metal trim, “metallized” knobs,
screws, and all other exposed metal parts for AC leakage.
Check leakage as described below.
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The AC leakage from any exposed metal part to earth ground and
from all exposed metal parts to any exposed metal part having a
return to chassis, must not exceed 0.5mA 500 microampers) . Leak-
age current can be measured by any one of three methods.
1. A commercial leakage tester, such as the Simpson 229 or
RCA WT-540A. Follow the manufacturers’ instructions to
usc these instruments.
2. A battery-operated AC milliammeter. The Data Precision 245
digital multimeter is suitable for this job.
3. Measuring the voltage drop across a resistor by means of a
VOM or battery-operated AC voltmeter. The “limit” indica-
tion is 0.75V, so analog meters must have an accurate low-
voltage scale. The Simpson 250 and Sanwa SH-63Trd are
examples of a passive VOM that is suitable. NearIy all bat-
tery operated digital multimeters that have a 2V AC range
are suitable. See Fig. A)
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A cold-water pipe is guaranteed earth ground;the cover-plate re-
taining screw on most AC outlet boxes is also at earth ground. If
the retaining screw is to be used as your earth-ground, verify that it
is at ground by measuring the resistance between it and a cold-
water pipe with an ohmmeter. The reading should be zero ohms. If
a cold-water pipe is not accessible, connect a 60-l00 watts trouble
light not a neon lamp) between the hot side of the receptacle and
the retaining screw. Try both slots, if necessary, to locate the hot
side of the line, the lamp should light at normal brilliance if the
screw is at ground potential. See Fig. B)
To Exposed Metal
Parts on Set
AC
voltmeter
(0.75V)
1.5k 1
Earth round
Fig. A. Using an AC voltmeter to check AC leakage.
1.5 + F
Fig. B. Checking for earth ground.
Trouble Light
AC Outlet Box
Ohmmeter
Cold-water Pip
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Section Title Page
–––––– –––– –––– Section Title Page –––––– –––– ––––
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2-1. Rear Cover Assembly ....................................... 11
2-2. OU Bracket Removal ........................................ 11
2-3. Service Position ................................................. 11
2-4. Power Block Removal ........................................ 11
2-5. Optical Unit Block Assembly Removal ............ 12
2-6. UD Board, Terminal Board
Assembly Removal ............................................ 12
2-7. U, M, BB, BC Boards Removal ......................... 13
2-8. G Board Removal ............................................... 13
2-9. A Board Removal ............................................... 14
2-10. T Board Removal ............................................... 14
2-11. Control Panel Block Assembly Removal .......... 14
2-12. H3 Board Removal ............................................. 14
2-13. H2 Board Removal ............................................. 15
2-14. Screen Mirror Block Assembly Removal .......... 15
2-15. H1 Board Removal ............................................. 15
 (/(&75,&$/$'-8670(176
3-1. Electrical Adjustment by Remote Commander .... 16
3-1-1. Method of Setting the Service Adjustment
Mode ............................................................... 16
3-1-2. Service Mode Adjustment ............................ 16
3-1-3. Memory Write Confirmation Method .......... 16
3-1-4. Adjusting Buttons and Indicator ................... 17
3-1-5. Service Mode List .......................................... 18
3-2. Chassis Picture Quality Adjustment ................. 65
3-2-1. White Level Adjustment ............................... 65
3-2-2. Sub Color/Sub Hue Adjustment .................... 66
3-2-3. Hi-Level/Cut-Off Adjustment ....................... 68
3-3. Vertical Stripe Adjustment ............................... 68
3-4. Sub Bright Adjustment ....................................... 69
3-5. Screen Center Adjustment ................................. 69
3-6. Favorites Adjustment ......................................... 69
 ',$*5$06
4-1. Block Diagram 1) .............................................. 70
Block Diagram 2) .............................................. 71
Block Diagram 3) .............................................. 72
Block Diagram 4) .............................................. 73
Block Diagram 5) .............................................. 74
Block Diagram 6) .............................................. 75
Block Diagram 7) .............................................. 76
Block Diagram 8) .............................................. 77
Block Diagram 9) .............................................. 78
Block Diagram 10) ............................................ 79
4-2. Frame Schematic Diagram ................................. 80
4-3. Circuit Boards Location ..................................... 81
4-4. Schematic Diagrams and Printed Wiring
Boards ................................................................. 81
1) Schematic Diagram of A 1/4) Board ................ 82
2) Schematic Diagram of A 2/4) Board ............... 83
3) Schematic Diagram of A 3/4) Board ............... 84
4) Schematic Diagram of A 4/4) Board ............... 85
5) Schematic Diagram of BB 1/10) Board ........... 86
6) Schematic Diagram of BB 2/10) Board ........... 87
7) Schematic Diagram of BB 3/10) Board ........... 88
8) Schematic Diagram of BB 4/10) Board ........... 89
9) Schematic Diagram of BB 5/10) Board ........... 90
10) Schematic Diagram of BB 6/10) Board ........... 91
11) Schematic Diagram of BB 7/10) Board ........... 92
12) Schematic Diagram of BB 8/10) Board ........... 93
13) Schematic Diagram of BB 9/10) Board ........... 94
14) Schematic Diagram of BB 10/10) Board ......... 95
15) Schematic Diagram of BC 1/5) Board ............. 96
16) Schematic Diagram of BC 2/5) Board ............. 97
17) Schematic Diagram of BC 3/5) Board ............. 98
18) Schematic Diagram of BC 4/5) Board ............. 99
19) Schematic Diagram of BC 5/5) Board ............. 100
20) Schematic Diagram of BF Board ....................... 101
21) Schematic Diagram of BM-1C 1/3) Board ...... 102
22) Schematic Diagram of BM-1C 2/3) Board ...... 103
23) Schematic Diagram of BM-1C 3/3) Board ...... 104
24) Schematic Diagram of G Board ......................... 105
25) Schematic Diagrams of H1, H2, H3 and
T Boards ............................................................. 106

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26) Schematic Diagram of M 1/4) Board ............... 107
27) Schematic Diagram of M 2/4) Board ............... 108
28) Schematic Diagram of M 3/4) Board ............... 109
29) Schematic Diagram of M 4/4) Board ............... 110
30) Schematic Diagram of U 1/3) Board ................ 111
31) Schematic Diagram of U 2/3) Board ................ 112
32) Schematic Diagram of U 3/3) Board ................ 113
33) Schematic Diagram of UD 1/2) Board ............. 114
34) Schematic Diagram of UD 2/2) Board ............. 115
Printed Wiring Boards
• A Board ............................................................ 116
• BB Board .......................................................... 118
• BC Board .......................................................... 120
• BM-1C Board ................................................... 120
• G Board ............................................................ 122
• H1 and T Boards .............................................. 124
• H2 Board .......................................................... 125
• H3 Board .......................................................... 126
• M Board ........................................................... 127
• U Board ............................................................ 128
• UD Board ......................................................... 130
4-5 Waveforms ......................................................... 131
4-6 IC Block Diagrams ............................................. 132
4-7 Semiconductors .................................................. 134
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5-1. Screen Mirror Block Section ............................ 136
5-2. Cabinet Section................................................... 137
5-3. Main Section ....................................................... 138
5-4. Optical Unit Section ........................................... 139
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Section Title Page
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• This device includes a self-diagnosis function.
• In case of abnormalities, the STANDBY indicator automatically blinks. It is possible to predict the abnormality location by the number
of blinks. The Instruction Manual describes blinking of the STANDBY indicator.
• If the symptom is not reproduced sometimes in case of a malfunction, there is recording of whether a malfunction was generated or not.
Operate the remote command to confirm the matter on the screen and to predict the location of the abnormality.
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• When a malfunction occurs the STANDBY indicator only blinks for one of the following diagnosis items. In case of two or more
malfunctions, the item which first occurred blinks. If the malfunctions occurred simultaneously, the item with the lower blink count
blinks first.
• The screen display displays the results regarding all the diagnosis items listed below. The display “ 0 ” means that no malfunctions
occurred.
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Release of STANDBY nd cator bl nk ng.
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STAND BYTIMERLAMP
Detected symptoms
D agnos s Item Probable Cause Locat on
¥ Power cord is not plugged in.
¥ Fuse is burned out (F1601) (G board)
¥ Power does not come on.
¥ No power is supplied to the unit.
¥ AC power suppl is fault .
Power does not turn on
¥ Lamp cover is not attached securel . ¥ No picture/No soundLamp cover error
¥ FAN1 or FAN2 power is not supplied. (A board)
¥ FAN connector is not attached securel . ¥ No picture/No sound
FAN stopped
Lamp driver error ¥ Lamp driver is fault . ¥ No picture/No sound
¥ +5 V is not supplied. (G board) ¥ No picture/No soundLow B error
¥ Audio ±15 V line is shorted. (A, G board)
¥ IC1203 or IC1204 is fault . (A board)
¥ PS1601 or 1602 is opened. (G board)
Audio error ¥ No picture/No sound
Lamp error ¥ Lamp for the light souce burns out. ¥ No picture/No sound
No. of t mes
STANDBY/STEREO
nd cator bl nks
0
3 times
4 times
5 times
6 times
9 times
LAMP LED
flashes

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• In cases of malfunctions where it is not possible to determine the symptom such as when the power goes off occasionally or when the
screen disappears occasionally, there is a screen display on whether the malfunction occurred or not in the past and whether the detection
circuit operated or not) in order to allow confirmation.
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• Quickly press the remote command button in the following order from the standby state.
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• The results display is not automatically cleared. In case of repairs and after repairs, check the self-diagnosis screen and be sure to return
the results display to “ 0 ”.
• If the results display is not returned to “ 0 ” it will not be possible to judge a new malfunction after completing repairs.
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• When ending the self-diagnosis screen completely, turn the power switch OFF on the remote commander or the main unit.
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Be aware that this differs from the method of
entering the service mode (volume + ).
DISPLAY b Channel b VOL Ð b POWER
Self Diagnosis
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B  b
SELF DIAGNOSIS
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