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14MR10
INSTALLATION AND SERVICE INSTRUCTIONS
Note: (1) When performing any adjustments to resistor controls and transformers use screwdrivers or TV alignment tools. (2) Before performing adjustments, the TV set must be on at least 15 minutes. non-metallic
CIRCUIT PROTECTION
The receiver is protected by a 4.0A fuse (F701), mounted on PWB-A, wired into one side of the AC line input.
HIGH VOLTAGE CHECK
High voltage is not adjustable but must be checked to verify that the receiver is operating within safe and efficient design limitations as specified checks should be as follows: 1. Connect an accurate high voltage meter between ground and anode of picture tube. 2. Operate receiver for at least 15 minutes at 120V AC line voltage, with a strong air signal or a properly tuned in test signal. 3. Receive a good local channel. 4. The voltage should be approximately, 23.5kV (at Picture MAX, Bright Center condition). If a correct reading cannot be obtained, check circuitry for malfunctioning components. After the voltage test, make Y-mute off to the normal mode.
X-RADIATION PROTECTOR CIRCUIT TEST
After service has been performed on the horizontal deflection system, high voltage system, B+ system, test the X-Radiation protection circuit to ascertain proper operation as follows: 1. Apply 130V AC using a variac transformer for accurate input voltage. 2. Allow for warm up and adjust all customer controls for normal picture and sound. 3. Receive a good local channel. 4. Connect a digital voltmeter to TP653 and make sure that the voltmeter reads 21.1 ±1.5V. 5. Apply external 27.9V DC at TP653 by using an external DC supply, TV must be shut off. 6. To reset the protector, unplug the AC cord and make a short circuit between TP651 and TP652. Now make sure that normal picture appears on the screen. 7. If the operation of the horizontal oscillator does not stop in step 5, the circuit must be repaired before the set is returned to the customer.
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14MR10
For adjustments of this model, the bus data is converted to various analog signals by the D/A converter circuit. Note: There are still a few analog adjustments in this series such as focus and master screen voltage. Follow the steps below whenever the service adjusment is required.
To enter the service mode and exit service mode. Short JA137&JA138 for 1second and release to switch to the service mode position, and the microprocessor is in input mode. (Adjustment through the I2C bus control.) To exit the service mode, turn the television off by pressing the power button.
1. Service mode.
Before putting unit into the service mode, check that customer adjustments are in the normal mode. Use the reset function in the video adjustment menu to ensure customer control are in their proper (reset) position.
2. Service item selection.
SERVICE MODE
(1) In the Service Mode, Key is used to select the mode in the following oreder.
AGC & GEOMETRIC MODE WHITE POINT ADJ. MODE SUB ADJ. MODE
OFFSET ADJ. MODE
FEATURE OPTION MODE
IC OPTION MODE
MTS ADJ. MODE
AGC & GEOMETRIC MODE
AGC TAKE OVER POINT (AGC) VERTICAL SLOPE (V-LIN) VERTICAL AMP (V-AMP) VERTICAL SHIFT (V-CENT) VERTICAL ZOOM (V-ZOOM) HORIZONTAL SHIFT (H-CENT) EAST-WEST WIDTH (H-SIZE) HORIZONTAL PARALLELOGRAM (EW//) EAST-WEST PARABOLA / WIDTH (PARA) EAST-WEST UPPER CORNER PARABOLA (COR(U)) EAST-WEST LOWER CORNER PARABOLA (COR(L)) EAST-WEST TRAPEZIUM (TRAPE) HORIZONTAL BOW (HB) S-CORRECTION (S-COR)
WHITE POINT ADJ. MODE
W.P. RED OFFSET HIGH / OFFSET BLUE TONE (DRI-R-HI) W.P. GREEN OFFSET HIGH / OFFSET BLUE TONE (DRI-G-HI) W.P.BLUE OFFSET HIGH / OFFSET BLUE TONE (DRI-B-HI) W.P. RED MH / STD (DRI-R-MH) W.P. GREEN MH / STD (DRI-G-MH) W.P. BLUE MH / STD (DRI-B-MH) W.P. RED OFFSET ML / OFFSET RED TONE (DRI-R-ML) W.P. GREEN OFFSET ML / OFFSET RED TONE (DRI-G-ML) W.P. BLUE OFFSET ML / OFFSET RED TONE (DRI-B-ML) W.P. RED OFFSET LOW (DRI-R-LO) W.P. GREEN OFFSET LOW (DRI-G-LO) W.P. BLUE OFFSET LOW (DRI-B-LO)
SUB ADJ. MODE
MAX VOLUME (SUB-VOL) SUB CONTRAST (SUB-CON) SUB TINT (SUB-TINT) SUB COLOUR (SUB-COL) SUB BRIGHTNESS (SUB-BRI) SUB SHARPNESS (SUB-SHP) MAX HOTEL VOLUME (HTL-VOL) HOTEL PROGRAM NO(HTL-PRG) BLUE BACK CONTRAST (BB-CON) OSD GRB REFERENCE (RGB) BLACK LEVEL OFFSET R(CUT-R) BLACK LEVEL OFFSET G(CUT-G) CATHODE DRIVE LEVEL(CDL)
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14MR10
OFFSET ADJ. MODE
Y-D TIME (TV) [ YD ] (DL-TV) Y-D TIME (AV) [ YD ] (DL-AV) INITIAL/DEFAULT LANGUAGE (INIT) FAO-MAX VOLUME (FAO-VOL) ENERGY SAVE OFFSET (ESV_OFFS) CLOSE CAPTION POSITION (CCPOS)
MTS ADJ. MODE
ATTENUATE INPUT SIGNAL LEVEL (ATT) VCO FREE RUNNING FREQUENCY ADJ. (VCO) STEREO, SAP, DBX FILTER ADJ. (FILTER) STEREO SEPARATION ADJUSTMENT (300HZ) (WIDEBAND) STEREO SEPARATION ADJUSTMENT (3kHZ) (SPECTRAL) BASS LEVEL (BASS) TREBLE LEVEL (TREBLE)
IC OPTION MODE
VERTICAL SCAN DISABLE (VSD) BLACK STRETCH (BKS) AUTOMATIC VOLUME LEVELLING (AVL) FAST FILTER IF-PLL ( FFI ) ENABLE VERTICAL GUARD ( EVG ) EHT TRACKING MODE ( EHT ) OVERSCAN SWITCH OFF (OSO) AUTO COLOUR LIMIT (ACL) FORCED COLOUR-ON (FCO) VIDEO MUTE AT IDENT LOSS (VMI) VIDEO MUTE AT PROGRAM/SOURCE CHANGE (VMC) HOTEL MODE (HTL) GAIN FM DEMODULATOR (BTSC) CHARGE PUMP (CP) FM WINDOW SELECTION (FMWS) SOUND MUTE BIT 0 (SM0) SOUND MUTE BIT 1 (SM1) IF AGC SPEED BIT 0 (AGC0) IF AGC SPEED BIT 1 (AGC1) PHI 1 TIME CONSTANT FOR FE (FOA-FE) PHI 1 TIME CONSTANT FOR FE (FOB-FE) PHI 1 TIME CONSTANT FOR AV (FOA-AV) PHI 1 TIME CONSTANT FOR AV (FOB-AV) FORCED SLICING LEVEL FOR VERTICAL SYNC.(FSL) SYNCHRONISATION OF OSD/TEXT DISPLAY (HP2) RGB BLANK (RGBL)
FEATURE OPTION MODE
V-CHIP (V-CHIP) MTS DECODING ENABLED (MTS) DEMO MODE (DEMO) REAL TIME CLOCK / ON TIMER (CLOCK) ENERGY SAVE (E-SAVE) PERSONAL PREFERENCE PROGRAM (P_PREF) UNIVERSAL PLUS (UNIV+) SPEAKER ON/OFF (SPEAKER) FIXED AUDIO OUT (FAO) VIEW TIMER (VIEW-TM) FRENCH LANGUAGE (FRENCH) EZ SETUP / AUTOPRESET (EZ-SETUP) WHITE TEMP OR FAVORITE COLOR (W-TEMP) AV ENABLED OR DISABLED (AV) AV2 ENABLED OR DISABLED (AV2) DYNAMIC SKIN CONTROL (DSK) RATIO PRE- AND OVERSHOOT BIT 0 (RPO0) RATIO PRE- AND OVERSHOOT BIT 1 (RPO1) GAIN FM DEMODULATOR (AGN) AUTO SWITCH OFF ENABLED (AUTO-OFF)
FORWARD : CH DOWN KEY REVERSE : CH UP KEY ( ) means OSD display.
Figure A: ADJUSTMENT CATEGORIES 1Press the CH DOWN/UP key on the remote controller to get ready to select the mode one by one. 2Press the CH DOWN/UP key on the remote controller to select the modes reversibly one by one. 3Using the VOLUME UP/DOWN key on the remote controller, the data can be modified. (OSD disturbance can be erased by R/C display key)
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14MR10
Below are the adjustments ranges and initial values for FIX VALUE category.
FIX VALUE SERVICE MODE
SERVICE POSITION AGC V-LIN V-AMP V-CENT V-ZOOM H-CENT H-SIZE EW// PARA COR(U) COR(L) TRAPE HB S-COR DRI-R-HI DRI-G-HI DRI-B-HI DRI-R-MH DRI-G-MH DRI-B-MH DRI-R-ML DRI-G-ML DRI-B-ML DRI-R-LO DRI-G-LO DRI-B-LO SUB-VOL SUB-CON SUB-COL SUB-BRI SUB-TINT SUB-SHP HTL-VOL HTL-PRG BB-CON RGB CUT-R CUT-G CDL DL-TV DL-AV INIT FAO-VOL ESV_OFFS CCPOS ATT VCO FILTER WIDEBAND SPECTRAL BASS TREBLE VSD BKS AVL
ADJUST ITEM AGC TAKE OVER POINT VERTICAL SLOPE VERTICAL AMP VERTICAL SHIFT VERTICAL ZOOM HORIZONTAL SHIFT EAST-WEST WIDTH HORIZONTAL PARALLELOGRAM EAST-WEST PARABOLA / WIDTH EAST-WEST UPPER CORNER PARABOLA EAST-WEST LOWER CORNER PARABOLA EAST-WEST TRAPEZIUM HORIZONTAL BOW S-CORRECTION W.P. RED OFFSET HIGH / OFFSET BLUE TONE W.P. GREEN OFFSET HIGH / OFFSET BLUE TONE W.P.BLUE OFFSET HIGH / OFFSET BLUE TONE W.P. RED MH / STD W.P. GREEN MH / STD W.P. BLUE MH / STD W.P. RED OFFSET ML / OFFSET RED TONE W.P. GREEN OFFSET ML / OFFSET RED TONE W.P. BLUE OFFSET ML / OFFSET RED TONE W.P. RED OFFSET LOW W.P. GREEN OFFSET LOW W.P. BLUE OFFSET LOW MAX VOLUME SUB CONTRAST SUB COLOUR SUB BRIGHTNESS SUB TINT SUB SHARPNESS MAX HOTEL VOLUME HOTEL PROGRAM NO BLUE BACK CONTRAST OSD GRB REFERENCE BLACK LEVEL OFFSET R BLACK LEVEL OFFSET G CATHODE DRIVE LEVEL Y-D TIME (TV) [ YD ] Y-D TIME (AV) [ YD ] INITIAL/DEFAULT LANGUAGE FAO-MAX VOLUME ENERGY SAVE OFFSET CLOSE CAPTION POSITION ATTENUATE INPUT SIGNAL LEVEL VCO FREE RUNNING FREQUENCY ADJ. STEREO, SAP, DBX FILTER ADJ. STEREO SEPARATION ADJUSTMENT (300HZ) STEREO SEPARATION ADJUSTMENT (3kHZ) BASS LEVEL TREBLE LEVEL VERTICAL SCAN DISABLE BLACK STRETCH AUTOMATIC VOLUME LEVELLING
DATA
RANGE INITIAL VALUE FIX/ADJ
REMARK
0~63 0~63 0~63 0~63 0~63 0~63 0~63 0~63 0~63 0~63 0~63 0~63 0~63 0~63 0~63 0~63 0~63 0~63 0~63 0~63 0~63 0~63 0~63 0~63 0~63 0~63 0~63 0~63 0~63 0~63 0~63 0~63 0~63 0-125 or >125 for none 0~15 0~15 0~63 0~63 0~15 0~15 0~15 0(English), 1(Spanish), 2(French) 0~63 0~63 0~255 0~15 0~63 0~63 0~63 0~63 0~15 0~15 0 or 1 when item selected 0(disable) or1(enable) 0(disable) or1(enable)
14 32 32 32 32 32 32 32 32 32 32 32 32 0 32 32 32 25 32 32 32 32 32 32 32 32 63 63 32 32 32 32 32 255 10 15 32 32 0 12 12 0 63 10 32 10 32 28 32 27 8 8 0 1 1
ADJ ADJ ADJ ADJ FIX ADJ FIX FIX FIX FIX FIX FIX FIX FIX FIX FIX FIX FIX ADJ ADJ FIX FIX FIX FIX FIX FIX FIX FIX ADJ ADJ ADJ FIX FIX FIX FIX FIX ADJ ADJ FIX FIX FIX FIX* FIX FIX ADJ FIX FIX FIX FIX FIX FIX FIX FIX FIX FIX
must be "17" must be "32" must be "33" must be "37" must be "32"
must be "32" must be "32" must be "25" must be "32" must be "22" must be "19" must be "63" must be "52"
must be "24"
must be "5" must be "15"
must be "2" must be "2" must be "8" 14LK22 1/ 14MR100 must be "63" must be "20"
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14MR10
SERVICE POSITION FFI EVG EHT OSO ACL FCO VMI VMC HTL BTSC CP FMWS SM0 SM1 AGC0 AGC1 FOA-FE FOB-FE FOA-AV FOB-AV FSL HP2 RGBL V-CHIP MTS DEMO CLOCK E-SAVE P_PREF UNIV+ SPEAKER FAO VIEW-TM FRENCH EZ-SETUP W-TEMP AV AV2 DSK RPO0 RPO1 AGN AUTO-OFF DATA
RANGE INITIAL VALUE FIX/ADJ
ADJUST ITEM FAST FILTER IF-PLL ENABLE VERTICAL GUARD EHT TRACKING MODE OVERSCAN SWITCH OFF AUTO COLOUR LIMIT FORCED COLOUR-ON VIDEO MUTE AT IDENT LOSS VIDEO MUTE AT PROGRAM/SOURCE CHANGE HOTEL MODE GAIN FM DEMODULATOR CHARGE PUMP FM WINDOW SELECTION SOUND MUTE BIT 0 (SM0) SOUND MUTE BIT 1 IF AGC SPEED BIT 0 IF AGC SPEED BIT 1 PHI 1 TIME CONSTANT FOR FE PHI 1 TIME CONSTANT FOR FE PHI 1 TIME CONSTANT FOR AV PHI 1 TIME CONSTANT FOR AV FORCED SLICING LEVEL FOR VERTICAL SYNC. SYNCHRONISATION OF OSD/TEXT DISPLAY RGB BLANK V-CHIP MTS DECODING ENABLED DEMO MODE REAL TIME CLOCK / ON TIMER ENERGY SAVE PERSONAL PREFERENCE PROGRAM UNIVERSAL PLUS SPEAKER ON/OFF FIXED AUDIO OUT VIEW TIMER FRENCH LANGUAGE EZ SETUP / AUTOPRESET WHITE TEMP OR FAVORITE COLOR AV ENABLED OR DISABLED AV2 ENABLED OR DISABLED DYNAMIC SKIN CONTROL RATIO PRE- AND OVERSHOOT BIT 0 RATIO PRE- AND OVERSHOOT BIT 1 GAIN FM DEMODULATOR AUTO SWITCH OFF ENABLED
REMARK
0(disable) or1(enable) 0(disable) or1(enable) 0(disable) or1(enable) 0(disable) or1(enable) 0(disable) or1(enable) 0(disable) or1(enable) 0(disable) or1(enable) 0(disable) or1(enable) 0(disable) or1(enable) 0(disable) or1(enable) 0(fast tuning) or 1 (moderate speed tuning) 0(disable) or1(enable) 0(disable) or1(enable) 0(disable) or1(enable) 0(disable) or1(enable) 0(disable) or1(enable) 0(disable) or1(enable) 0(disable) or1(enable) 0(disable) or1(enable) 0(disable) or1(enable) 0(disable) or1(enable) 0(disable) or1(enable) 0(disable) or1(enable) 0(disable) or1(enable) 0(disable) or1(enable) 0(disable) or1(enable) 0(disable) or1(enable) 0(disable) or1(enable) 0(disable) or1(enable) 0(disable) or1(enable) 0(disable) or1(enable) 0(disable) or1(enable) 0(disable) or1(enable) 0(disable) or1(enable) 0(AUTOPRESET) or 1(EZ SETUP) 0(FC) or 1(WT) 0(without ext. source) or 1(with external source) 0(1 input) or 1(2 input) 0(disable) or1(enable) 0(disable) or1(enable) 0(disable) or1(enable) 0(normal) or1(+6dB) 0(disable) or1(enable)
0 1 1 0 0 0 1 1 0 0 0 0 1 0 1 0 0 0 1 1 0 0 0 0 0 1 1 1 0 0 0 0 1 0 1 0 0 0 0 0 0 0 1
FIX FIX FIX FIX FIX FIX FIX FIX FIX FIX FIX FIX FIX FIX FIX FIX FIX FIX FIX FIX FIX FIX FIX FIX FIX FIX FIX* FIX FIX FIX FIX FIX FIX* FIX FIX FIX FIX FIX FIX FIX FIX FIX FIX
14LK221/14MR100
14LK221/14MR100
Table - A
Holding down to short JA137&JA138 and turn on the main power SW will automatically write the initial values into IC1003. This is only can done when a new EEPROM is used. (Judge with the first 4 bytes.)
ADJUSTMENT PART REPLACED IC801 NECESSARY UNNECESSARY NOTES Data is stored in IC1003. Holding down to short JA137&JA138 and turn on the main power SW will automatically write the initial values into IC1003. This is only can done when a new EEPROM is used. (Judge with the first 4 bytes.) Adjust items related to picture tube only.
X
IC1003
X
CRT
X
Table - B
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14MR10
Ë SERVICE ADJUSTMENT
RF AGC Adjustment
1. Receive a good local channel. 2. Enter the service mode signal category and select the service adjustment "AGC". 3. Set the data value to point where no noise or beat appears. 4. Select another channel to confirm that no noise or beat appears.
CHROMA ADJUSTMENT
No. Adjusting point 1 SUB-TINT (I2C BUS CONTROL) Adjusting procedure/conditions 1. Receive the "Colour Bar" signal through AV in. 2. Connect the oscilloscope to TP853 (Pin (5) of P882) BLUE-OUT. » Range : 100mV/div. (AC)(Use Probe 10:1) » Sweep time : 10 µsec/div. 3. Call the "SUB-TINT" mode in service mode. Adjust the "SUB-TINT" bus data to obtain the waveform shown as Fig 1. 4. "SUB-TINT" bus data decrease 4 steps to get final waveform. (Fig 2.) 5. Clear the SERVICE mode. Waveform and others
WAVEFORM 1
SAME LEVEL
FINAL WAVEFORM
W Y CY G MG R B
Fig 1
Fig 2
HORIZONTAL AND VERTICAL DEFLECTION LOOP ADJUSTMENT
No. Adjusting point 1 V-SLOPE(I2C BUS CONTROL) Adjusting procedure/conditions 1. Receive Monoscope Pattern Signal. 2. Call the "V-LIN" mode. 3. Increase or decrease "V-LIN" by Volume key till the horizontal line in the center of monoscope is just at the position where the blanking starts. Waveform and others
2
V-CENTER (I2C 1. Call the "V-CENT" mode. 2. Increase or decrease "V-CENT" by Volume key till BUS CONthe picture is centered. TROL) V - AMP (I2C BUS CONTROL) 1. Call the "V-AMP" mode. 2. Increase or decrease "V - AMP" by Volume key to set overscan of 10.0% typical. Adjustment Spec 10.0% range ±1%. FIXED DATA, NO NEED TO ADJUST.
3
4
5
S-CORRECTION (I2C BUS CONTROL) H - CENTER
1. Call the "H-CENT" mode. 2. Increase or decrease "H-CENT" by Volume key to center the picture horizontal. 1. Receive the "Monoscope Pattern" signal. 2. Press R/C to set Picture NORMAL condition. 3. Adjust the focus control to get the best focus.
6
Focus adjustment
10
14MR10
CRT CUT-OFF, BACKGROUND AND SUB-CONTRAST ADJUSTMENT
No. Adjusting point 1 CRT CUTOFF ADJUSTMENT (I2C BUS CONTROL) Adjusting procedure/conditions 1. Switch TV to VIDEO mode,BLUE BACK OFF, with NO VIDEO signal. 2. Press R/C to set Picture Normal condition. 3. Connect the oscilloscope to Red OUT from IC801.(TP47R) Range Sweep : 1 V/Div (DC) : 5 msec/Div
1V 0
Waveform and others
3.0Vdc
4. Adjust SCREEN VR ,so that the tip of signal reach 3.0 Vdc + 0.1 Vdc. 2 SUB-BRIGHTNESS ADJUSMENT (I2C BUS CONTROL) 1. Call " SUB-BRI" in service mode. (Receive Crosshatch pattern with 5 black level windows) 2. Adjust the " SUB BRIGHT " bus data in order that the line 1, 2 and 3 have the same darkness wherelse line 4 is slightly brighter than line 1, 2 and 3 and finally line 5 will be the brighter than line 4. 1. Receive the "Monoscope Pattern" signal. 2. Press R/C to set Picture NORMAL condition. 3. Connect the DC miliammeter between the TP 602 ( - ) TP 603 ( + ). 4. Check Beam current should be around (720µA) 5. Set it to service mode and adjust the DRI-G-MH, & DRI-B-MH data to have a colour temperature of 11,600°K ( white ). 6. Receive "WHITE" pattern, WITH BURST signal, and set BRIGHTNESS Y by generator, to ** 10 cd/m2 (MINOLTA CA-100) by reducing LUMINATE Y signal. 7. Adjust "CUT-R" & "CUT-G" to get 11,600°K. Then go back NORMAL mode (HIGH BRIGHT**) to check colour temperature. If out of range, back to (1). Note: This adjustment must be done after warming up the unit for 30 minutes or longer with a beam current over 500µA. DRI-R-MH=32 DRI-G-MH=33 DRI-B-MH=37 DRI-R-MH=32 4 Maximum beam check (FIXED) (FIXED) (FIXED) (FIXED)
1 2 3 4 5
1, 2, 3 are in same black level. # 11,600° K X : 0.273 Y : 0.280 ( MINOLTA COLOUR ANALYZER CA-100) *NOTE: Above DATA can be UP/ DOWN by volume key. LOW 1.8cd/m2 HIGH 115cd/m2
3
WHITE BALANCE SERVICE MODE ADJ. (I2C BUS CONTROL)
14"
* 11,600° K DRI-GW="DRI-GS"DATA-5 DRI-BW="DRI-BS" DATA-5
1. Receive the "Monoscope Pattern" signal. 2. Press R/C to set Picture NORMAL condition. 3. Connect the DC miliammeter between TP603 (+) and TP602 (). (Full Scale: 3 mA Range) 4. Beam current must be within 720 ± 50 µA.
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