BA-5 SERVICE MANUAL CHASSIS MODEL NAME REMOTE COMMANDER DESTINATION CHASSIS NO. KV-25FS12 RM-Y173 SCC-S38UA KV-25FS12C RM-Y173 SCC-S38VA RM-Y173 KV-25FS12 ® TRINITRON COLOR TELEVISION 9-965-902-01...
KV-25FS12 / 25FS12C SPECIFICATIONS KV-25FS12C KV-25FS12 Power requirements 120V, 60Hz 220V, 50/60Hz Number of Inputs/Outputs Video S Video Audio Audio Out Headphone Out Speaker output (W) 7.5 x 2 Power Consumption (W) In use (Max) 165W In Standby Dimensions(W/H/D) 614.8 x 564.1 x 499.7 x 22 x 19 Mass...
Ne les remplacer que par des composants sony dont le numero de piece est indique dans le present manuel ou dans des supplements publies par sony. Les reglages de circuit dont l’importance est critique pour la securite du fonctionnement sont identifi...
KV-25FS12 / 25FS12C SAFETY CHECK-OUT After correcting the original service problem, perform the following Leakage Test safety checks before releasing the set to the customer: 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 1.
KV-25FS12 / 25FS12C SELF-DIAGNOSTIC FUNCTION The units in this manual contain a self-diagnostic function. If an error occurs, the STANDBY/TIMER LED will automatically begin to fl ash. The number of times the LED fl ashes translates to a probable source of the problem. A defi nition of the STANDBY/TIMER LED fl ash indicators is listed in the instruction manual for the user’s knowledge and reference.
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KV-25FS12 / 25FS12C Self-Diagnostic Screen Display For errors with symptoms such as “power sometimes shuts off” or “screen sometimes goes out” that cannot be confi rmed, it is possible to bring up past occurrences of failure on the screen for confi rmation. To Bring Up Screen Test In standby mode, press buttons on the Remote Commander sequentially, in rapid succession, as shown below: Display...
KV-25FS12 / 25FS12C SECTION 2: SET-UP ADJUSTMENTS The following adjustments should be made when a complete Perform the adjustments in order as follows: realignment is required or a new picture tube is installed. Beam Landing Convergence These adjustments should be performed with rated power supply Focus voltage unless otherwise noted.
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KV-25FS12 / 25FS12C 2-2. CONVERGENGE HORIZONTAL STATIC CONVERGENCE Before starting convergence adjustments: If the blue dot does not converge with the red and green dots, peform the following: 1 Perform FOCUS, VLIN and VSIZE adjustments. 1. Move BMC magnet (a) to correct insuffi cient H.Static convergence. 2.
KV-25FS12 / 25FS12C DYNAMIC CONVERGENCE ADJUSTMENT 4. Adjust XCV core to balance X axis. 5. Adjust YCH VR to balance Y axis. Before performing this adjustment, perform Horizontal and Vertical Static 6. Adjust vertical red and blue convergence with V.TILT (TLV VR.) Convergence Adjustment.
KV-25FS12 / 25FS12C 2-5. METHOD OF SETTING THE SERVICE ADJUSTMENT MODE SERVICE MODE PROCEDURE 1. Standby mode (power off). 2. Press Display Channel 5 Sound Volume + Power on the Remote Commander (press each button within a second). SERVICE ADJUSTMENT MODE ON 1.
KV-25FS12 / 25FS12C SECTION 3: SAFETY RELATED ADJUSTMENTS HOLD-DOWN READJUSTMENT 3-1. X R564 CONFIRMATION METHOD (HOLD-DOWN CONFIRMATION) AND If the setting indicated in Step 2 of Hold-Down Operation Confi rmation READJUSTMENTS cannot be met, readjustment should be performed by altering the resistance value of R564 component marked with X.
KV-25FS12 / 25FS12C SECTION 4: CIRCUIT ADJUSTMENTS ELECTRICAL ADJUSTMENTS BY REMOTE COMMANDER Use the Remote Commander (RM-Y173) to perform the circuit adjustments in this section. Test Equipment Required: 1. Pattern generator 2. Frequency counter 3. Digital multimeter 4. Audio oscillator 4-1.
KV-25FS12 / 25FS12C ADJUSTMENT ITEMS (1 OF 2) AVERAGE Reg # ITEM FUNCTION RANGE DATA NTSC VIDEO DATA HSIZ Horizontal Size Adjustment 0-63 HPOS Horizontal Position Adjustment 0-63 VBOW Vertical Line Bowing Adj. 0-15 VANG Vertical line Bowing Slant Adj. 0-15 TRAP Horizontal Trapezoid Adj.
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KV-25FS12 / 25FS12C ADJUSTMENT ITEMS (2 OF 2) AVERAGE Reg # ITEM FUNCTION RANGE DATA NTSC VIDEO DATA SHPF SHARPNESS Circuit Fo Palette mode controls this register PREL Pre-Shoot / Over-Shoot Y-DC DC Transmission Ratio Switching Palette mode controls this register GAMM Gamma Correction Amnt Palette mode controls this register ABLM ABL Mode Switching...
KV-25FS12 / 25FS12C 4-4. MB BOARD ADJUSTMENTS DISPLAY POSITION ADJUSTMENT (DISP) 1. Input a color-bar signal. H. FREQUENCY (FREE RUN) CHECK 2. Set to Service Adjustment Mode. 1. Input a TV mode (RF) with no signal. 3. Select DISP with 1 and 4 . 2.
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KV-25FS12 / 25FS12C V. CENTER ADJUSTMENT (VPOS) V LINEARITY (VLIN) Perform this adjustment after performing H. Frequency (Free Run) Check. 1. Input a crosshatch signal. 2. Activate the Service Adjustment Mode. V CORRECTION (SCOR) 3. Select the VPOS item with 1 and 4 . 4.
KV-25FS12 / 25FS12C SECTION 5: DIAGRAMS 5-1. CIRCUIT BOARDS LOCATION • When replacing the parts listed in the table below, it is important to perform the related adjustments. Part Replaced ( ) Adjustment ( ) HV HOLD-DOWN DY, T505, CRT, IC501 C507, R564 C520, C505, C509, C515, T504, CB Board...
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KV-25FS12 / 25FS12C A BOARD IC VOLTAGE LIST IC402 IC501 IC601 IC604 TU101 volt volt volt volt volt -31.8 13.3 -32.7 30.7 14.1 53.2 -23.8 IC2001 -32.7 volt 10.1 IC602 volt 14.0 135.9 IC502 123.4 All voltages are in V volt IC603 14.0...
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KV-25FS12 / 25FS12C MB BOARD SCHEMATIC DIAGRAM CN1003 CN1004 TO A BOARD TO A BOARD CN2009 CN2002 STBY-7.5V STBY-7.5V — C1353 R1317 VIDEO R1314 CHIP CHIP R1082 4.7k CHIP Q1003 R1043 2SD601A 8.2k VIDEO CHIP BUFFER — R1418 R1034 R1042 R1374 1k CHIP CHIP...
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KV-25FS12 / 25FS12C MB BOARD IC VOLTAGE LIST IC1001 volt IC1301 IC1304 volt volt IC1302 volt IC1002 volt IC1305 volt IC1003 volt -0.2 All voltages are in V MB BOARD WAVEFORMS 2.7 Vp-p (8 MHz) 4.7 Vp-p (H) 1.0 Vp-p (H) 0.7 Vp-p (H) 0.9 Vp-p (H) 4.0 Vp-p (V)
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MB BOARD IC BLOCK DIAGRAM KV-25FS12 / 25FS12C IC1301: CXA2131CS EYUV CLAMP <FSC SW> ABL FIL YUV SW <YSEL> YUVOUT ABL IN <YUVOUT> DEMOD. C VCO <HUE> ABL/PEAK LIM DPIC CLAMP <ABL MODE> IK IN <DPIC> COLOR AMP RGB 1/2 <<IKR>>...
1-419-510-11 COIL, DEGAUSSING (KV-25FS12C ONLY) 3-703-574-00 RETAINER, DOOR A-1304-224-A MB (VAR) MOUNTED PC BOARD A-1342-547-A VB (VAR) MOUNTED PC BOARD 4-046-160-01 EMBLEM (NO.9), SONY 4-073-844-01 GUIDE, LED ! 20 1-757-834-11 CORD, AC POWER (DOUBLE GROMMENT) 4-073-843-06 BUTTON, MULTI (KV-25FS12 ONLY)
KV-25FS12 / 25FS12C SECTION 7: ELECTRICAL PARTS LIST The components in this manual identifi ed by the following NOTE: The components identifi ed by shading RESISTORS symbol: X indicate parts that have been carefully factory- and ! mark are critical for safety. Replace only •...
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KV-25FS12 / 25FS12C NOTE: Les composants identifi es par un trame et une NOTE: The components identifi ed by shading marque ! sont critiques pour la securite. Ne les and ! mark are critical for safety. Replace only remplacer que par une piece portant le numero specifi e. with part number specifi...
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KV-25FS12 / 25FS12C NOTE: Les composants identifi es par un trame et une NOTE: The components identifi ed by shading marque ! sont critiques pour la securite. Ne les and ! mark are critical for safety. Replace only remplacer que par une piece portant le numero specifi e. with part number specifi...
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KV-25FS12 / 25FS12C NOTE: Les composants identifi es par un trame et une NOTE: The components identifi ed by shading marque ! sont critiques pour la securite. Ne les and ! mark are critical for safety. Replace only remplacer que par une piece portant le numero specifi e. with part number specifi...
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KV-25FS12 / 25FS12C A component identifi ed by this X symbol indicates that it NOTE: The components identifi ed by shading has been carefully factory-selected to satisfy regulations and ! mark are critical for safety. Replace only regarding X-ray radiation. Should replacement be required, with part number specifi...
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KV-25FS12 / 25FS12C NOTE: Les composants identifi es par un trame et une NOTE: The components identifi ed by shading marque ! sont critiques pour la securite. Ne les and ! mark are critical for safety. Replace only remplacer que par une piece portant le numero specifi e. with part number specifi...
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KV-25FS12 / 25FS12C NOTE: Les composants identifi es par un trame et une NOTE: The components identifi ed by shading marque ! sont critiques pour la securite. Ne les and ! mark are critical for safety. Replace only remplacer que par une piece portant le numero specifi e. with part number specifi...
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KV-25FS12 / 25FS12C REF.NO. PART NO. DESCRIPTION VALUES REF.NO. PART NO. DESCRIPTION VALUES JR428 1-216-295-11 SHORT C1013 1-163-009-11 CERAMIC CHIP 0.001µF 10% JR429 1-216-295-11 SHORT C1014 1-130-495-00 MYLAR 0.1µF JR440 1-216-295-11 SHORT C1015 1-163-231-11 CERAMIC CHIP 15pF JR460 1-216-295-11 SHORT C1016 1-163-231-11 CERAMIC CHIP...
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KV-25FS12 / 25FS12C NOTE: Les composants identifi es par un trame et une NOTE: The components identifi ed by shading marque ! sont critiques pour la securite. Ne les and ! mark are critical for safety. Replace only remplacer que par une piece portant le numero specifi e. with part number specifi...
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CN602 R650 R658 D608 -33V R649 R613 0.68 0.68 MTZJ-T-77-20B Q601 -23.6V 2.2M R571 Q507 D210 2SD2144S-TP-UVW 4.7k TO HZ BOARD 2SB709A MTZJ-T-77-10B :CHIP -33.1V R624 R622 F601 CN902 LOW B 100k Q602 AC IN 2SC3311A L604 D603 D607 -32.9V R651 AC IN MTZJ-T-77-33B...
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R639 -23.6V 2.2k -23.6V Q603 H.DY H.DY V.DY V.DY 2SA1309A-QRSTA C627 CN501 TP 508 PH601 R640 6P WHT 250V V OUT PC123FY2 PHOTOCOUPLER V DY + -31.2V V DY - TP507 R506 C510 L502 H DY - 250V V MID 2.2mH H DY - L504...