SHARP CX34K3 Diagram

CX34K3
SERVICE MANUAL
S10V9CX34K3//
COLOUR TELEVISION
Chassis No. UA-1
MODEL
CX34K3
FEATURE
Ë
NTSC (AV thru)
Ë
Full Auto Channel Preset and Auto Channel Skip
Ë
100 CH Program Memory
Ë
CATV (Hyper Band) Ready Use Frequency Synthesizer Tuner
Ë
AVL (Sound Keeper) Function
Ë
High Contrast Picture (Black Stretch Circuit)
Ë
ON Timer/Sleep Timer/Reminder Timer
Ë
Blue Back Noise Mute
Ë
Front AV In and Rear AV In/Out Terminals
Ë
Colour-Comb Filter (NTSC AV In)
Ë
Hotel Mode
Ë
Front Headphone Jack
Ë
Multi Language OSD (English/Chinese/French/ Arabic/Malay/Russian)
CONTENTS
Page
» SPECIFICATIONS .............................................2
» IMPORTANT SERVICE NOTES ........................2
» ADJUSTMENT PRECAUTIONS........................3
» UA1 HOTEL MODE APPLICATION.................15
» TROUBLE SHOOTING TABLE ........................16
» SOLID STATE DEVICE BASE DIAGRAM .......18
» CHASSIS LAYOUT ..........................................19
» BLOCK DIAGRAM...........................................20
» WAVEFORMS..................................................23
» DESCRIPTION OF SCHEMATIC DIAGRAM .. 24 » SCHEMATIC DIAGRAM
Ë
REMOTE CONTROL UNIT..........................24
Ë
TUNER .........................................................25
Ë
MAIN UNIT ...................................................26
Ë
CRT UNIT.....................................................28
Ë
HEADPHONE UNIT ..................................... 28
» PRINTED WIRING BOARD ASSEMBLIES ..... 29
» REPLACEMENT PARTS LIST
Ë
ELECTRICAL PARTS
MAIN UNIT ...................................................34
CRT UNIT.....................................................38
HEADPHONE UNIT ..................................... 38
Ë
SUPPLIED ACCESSORIES ........................39
Ë
PACKING PA RTS .........................................39
Ë
CABINET PARTS .........................................39
Page
WARNING
The chassis in this receiver is partially hot. Use an isolation transformer between the line cord plug and power receptacle, when servicing this chassis. To prevent electric shock, do not remove cover. No user – serviceable parts inside. Refer servicing to qualified service personnel.
SHARP CORPORATION
1
SPECIFICATIONS
CX34K3
Convergence ................................................................................. Self Converging System
Focus ....................................................................................Quadra-Potential Electrostatic
Sweep Deflection................................................................................................... Magnetic
Intermediate Frequencies
Picture IF Carrier ............................................................................................... 38.9 MHz
Sound IF Carrier Frequency
5.5 MHz .......................................................................................................... 33.4 MHz
Colour Sub-Carrier Frequency ....................................................................... 34.47 MHz
Power Input.................................................................................... AC220 - 240V, 50/60 Hz
Power Consumption ..................................................................................................... 65 W
Audio Power Output Rating......................................................................... 3.0 W (at Max.)
Speaker
Size ............................................................................................... 5 × 9 cm Elliptic (1 pc)
Voice Coil Impedance......................................................................... 16 ohms at 400 Hz
Aerial Input Impedance
VHF/UHF ....................................................................................... 75 ohm Unbalanced
2
Receiving Channels (PAL-B/G)
» VHF........................................................................................... AU0 thru AU12 ch
» UHF ........................................................................................ AU28 thru AU69 ch
Receiving Frequency
» VHF-Channels .................................................................... 44.25 thru 463.25 MHz
» VHF-Channels .................................................................. 471.25 thru 863.25 MHz
Dimensions ..............................................................................................Width: 357.0 mm
Cabinet Material ................................................................................................. All Plastics
Specifications are subject to change without prior notice.
NZ1 thru NZ11 ch
Height: 361.0 mm
Depth: 369.0 mm
Weight (Approx.): 9.2 kg
IMPORTANT SER VICE NOTES
Maintenance and repair of this receiver should be done by qualified service personnel only.
SERVICING OF HIGH VOLTAGE SYSTEM AND PICTURE TUBE
When servicing the high voltage system, remove static charge from it by connecting a 10k ohm Resistor in series with an insulated wire (such as a test probe) between picture tube dag and 2nd anode lead. (AC line cord should be disconnected from AC outlet.)
1. Picture tube in this receiver employs integral implosion pr otection.
2. Replace with tube of the same type number for contin ued safety.
3. Do not lift picture tube by the nec k.
4. Handle the picture tube only when wearing shatterproof gog gles and after discharging the high voltage completely
X-RAY
This receiver is designed so that any X-Ray radiation is kept to an absolute minimum. Since certain malfunctions or servicing may produce potentiall y hazardous radiation with prolonged exposure at close range, the following precautions should be observed:
1. When repairing the circuit, be sure not to increase the high v oltage to more than 23.5 kV (at beam 0 µA) for the set.
2. To keep the set in a normal operation, be sure to make it function on 22.0 kV ±1.5 kV (at beam 800 µA) in the case of the set. The set has been factory – Adjusted to the above-mentioned high voltage.
If there is a possibility that the high voltage fluctuates as a result of the repairs, never forget to check for such high voltage after the work.
3. Do not substitute a picture tube with unauthorized types and/or brands which may cause excess X-ray radiation.
BEFORE RETURNING THE RECEIVER
Before returning the receiver to the user, perf orm the following safety c hecks.
1. Inspect all lead dress to make certain that leads are not pinched or that hardware is not lodged between the chassis and other metal parts in the receiver.
2. Inspect all protective devices such as non-metallic control knobs, insulating fishpapers, cabinet backs, adjustment and compar tment covers or shields, isolation resistor-capacity networks, mechanical insulator s and etc.
2-1 2-2
ADJUSTMENT PRECAUTIONS
Ë
SERVICE MODE
This model’s setting are adjusted in two different ways: though the I2C bus control and in the conventional analog manner. The adjustments via the I2C bus control include preset-only items and variable data.
1. Setting the service mode by the microprocessor.
1 Make a short-circuit JA122 and JA124 for a second and release to switch to the service
mode position and the microprocessor is in input mode. (Adjustment through the I2C bus control). (Use JWS Key to set as well).
2 Press the CH DOWN / UP key on the remote controller to get ready to select the mode
one by one.
3 Press the CH DOWN / UP key on the remote controller to select the modes reversibly
one by one.
4 Using the VOLUME UP/ DOWN key on the remote controller, the data can be modified. 5 Make a short-circuit JA122 and JA124 for a second and release to switch to the normal
mode (OFF) position and the microprocessor is in out of the service mode.
2. Factory Presetting.
1 Make a short-circuit JA122 and JA124 for a second and release to switch to the service
mode position and turn on the main power switch. Initial v alues are automatically preset, only when a new EEPROM is used (Judge with the first 4 bytes).
3
2 The initial data are preset as listed in pages 4-6. 3 Make sure the data need modify or not (Initial data).
Note: Once the chassis has been assembly together and ready to be POWER ON for the
FIRST TIME, make sure to make a short-circuit JA122 and JA124 switch to the service mode position first and then turn on the main power switch. (See 2-1 above).
Precaution: If haven’t done this initiation, it ma y possibl y generate excessive Beam current.
3. For reference please check with memory map (UA1 Series type RH-IX3368CE Attachment)
(1)In the Service Mode, Key is used to select the mode in the following order.
AGC &
GEOMETRIC
MODE
MISC.
OPTION
MODE
AGC &
GEOMETRIC
MODE
AGC TAKE OVER POINT (AGC)
VERTICAL SLOPE (V-LIN)
VERTICAL AMP (V-AMP)
VERTICAL SHIFT (V-CENT)
HORIZONTAL SHIFT (H-CENT)
S-CORRECTION (S-COR)
↓ ↓ ↓ ↓ ↓ ↓
W.P. GREEN W ARM W.P.(DRI-GW)
WHITE POINT
ADJ.
MODE
IC
OPTION
MODE
WHITE POINT
ADJ.
MODE
W.P. RED STD. W.T. (DRI-RS)
W.P. GREEN STD. W.T.(DRI-GS)
W.P.BLUE STD. W.P. (DRI-BS)
W.P. RED W ARM W.P.(DRI-R W)
W.P. BLUE W ARM W.P.(DRI-BW)
W.P. RED COOL W.P.(DRI-RC)
W.P. GREEN COOL W.P.(DRI-GC)
W.P. BLUE COOL W.P. (DRI-BC)
↓ ↓ ↓ ↓ ↓ ↓ ↓ ↓ ↓
FORWARD : CH DOWN KEY REVERSE : CH UP KEY
MAX VOLUME (SUB-VOL)
SUB CONTRAST (SUB-CON)
SUB COLOUR (SUB-COL)
SUB BRIGHTNESS (SUB-BRI)
SUB TINT (SUB-TINT)
SUB SHARPNESS (SUB-SHP)
MAX HOTEL VOLUME (HTL-VOL)
HOTEL PROGRAM NO(HTL-PRG)
OSD GRB REFERENCE (RGB) BLACK LEVEL OFFSET R(CUT-R) BLACK LEVEL OFFSET B(CUT-B)
CATHODE DRIVE LEVEL(CDL)
SUB ADJ.
MODE
Y-DELAY
ADJ.
MODE
OFFSET
ADJ.
MODE
SUB ADJ.
MODE
↓ ↓ ↓ ↓ ↓ ↓ ↓ ↓ ↓ ↓ ↓ ↓
FORWARD : CH DOWN KEY REVERSE : CH UP KEY * ( ) means OSD display.
3-1 3-2
CX34K3
Y-DELAY
ADJ.
MODE
Y-D TIME FOR PAL (TV) (DL-PT)
Y-D TIME FOR SECAM (TV) (DL-ST)
Y-D TIME FOR N358 (TV) (DL-3T) Y-D TIME FOR N443 (TV) (DL-4T)
Y-D TIME FOR B/W (TV) (DL-TV) Y-D TIME FOR PAL (AV) (DL-PA)
Y-D TIME FOR SECAM (AV) (DL-SA)
Y-D TIME FOR N358 (AV) (DL-3A)
Y-D TIME FOR N443(AV) (DL-4A) Y-D TIME FOR B/W (AV) (DL-AV)
SOUND SYSTEM M (S-M)
4
SOUND SYSTEM DK (S-DK)
SOUND SYSTEM I (S-I)
SOUND SYSTEM BG (S-BG)
PLAYBACK SECAM (P-SECAM)
FE (RF) NTSC 3.58 (F-N358) FE (RF) NTSC 4.43 (F-N443) FE (RF) SECAM (F-SECAM)
VIDEO MUTE AT IDENT LOSS (VMI)
VIDEO MUTE AT PROGRAM
/SOURCE CHANGE (VMC)
REDUCED FM DEMODULATION
GAIN FOR BTSC SIGNAL (BTSC)
↓ ↓ ↓ ↓ ↓ ↓ ↓ ↓ ↓ ↓
*(Y-D : Y-DELAY)
MISC.
OPTION
MODE
↓ ↓ ↓ ↓ ↓ ↓ ↓ ↓ ↓ ↓
HOTEL MODE (HTL)
A
OFFSET
ADJ.
MODE
COLOUR OFFSET (PAL) (COL-OP)
COLOUR OFFSET (SECAM) (COL-OS) COLOUR OFFSET (NTSC358) (COL-O3) COLOUR OFFSET (NTSC443) (COL-O4)
SHARPNESS OFFSET (PAL) (SHP-OP)
SHARPNESS OFFSET (SECAM) (SHP-OS) SHARPNESS OFFSET (NTSC358) (COL-O3) SHARPNESS OFFSET (NTSC443) (COL-O4)
NUMBER OF EXT AV SOURCE (AV)
FM WINDOW SEVECTION (FMWS)
SOUND MUTE BIT 0 (SM0) SOUND MUTE BIT 1 (SM1)
THAI LANGUAGE (THA)
ARABIC LANGUAGE (ARA)
MALAY LANGUAGE (MAL) CHINESE LANGUAGE (CHI) FRENCH LANGUAGE (FRE)
RUSSIAN LANGUAGE (RUS)
FORCED V-SYNC SLICING LEVEL(FSL)
SYNC OF OSD (HP2)
RESERVED FOR LATAM :ODER:BRAZIL
/ARGENTINA (OBA)
↓ ↓
↓ ↓ ↓ ↓ ↓
A
↓ ↓ ↓ ↓ ↓ ↓ ↓ ↓ ↓ ↓ ↓ ↓ ↓
B
IC
OPTION
MODE
VERTICAL SCAN DISABLE(VSD)
BLACK STRETCH (BKS)
AUTO V OLUME LEVELING(A VL)
FAST FILTER IF-PLL(FFI)
ENABLE VERTICAL GUARD (EVG)
EHT TRACKING MODE (EHT)
OVERSCAN SWITCH OFF(OSO)
AUTO COLOUR LIMIT(ACL)
FORCED COLOUR LIMIT(FCO)
IF AGC SPEED BIT 0 (AGC0)
IF AGC SPEED BIT 1 (AGC1) FOA Time Constant-RF (FOA-FE) FOB Time Constant-RF (FOB-FE) FOA Time Constant-AV (FOA-AV) FOB Time Constant-AV (FOB-AV)
↓ ↓ ↓ ↓ ↓ ↓ ↓ ↓ ↓
B
BILINGUAL(BIL)
↓ ↓ ↓ ↓ ↓ ↓
USER DATA IN SERVICE MODE
* While SERVICE mode ON, EEPROM DATA will switch to the service data.
Also, once SERVICE mode OFF, EEPROM will switch back to previous USER DATA.
* In the service mode, the user data establish as below,
MODE USER DATA
CONTRAST MIN (1/60) COLOUR MIN (1/60) BRIGHTNESS MIN (1/60) TINT MIN (1/60) SHARPNESS MIN (1/60) WHITE TEMP STANDARD S-VOLUME MIN (1/60) BLUE BACK OFF C SYSTEM AUTO S SYSTEM *1
The flow of Mode lists as following,
* Direct Key-in Step1 Mode
RC COMMAND SERVICE-ITEM
FUNCTION AGC
CONTRAST DOWN V-LIN
COLOUR DOWN V-AMP
BRIGHTNESS DOWN V-CENT
TINT DOWN H-CENT
SHARPNESS DOWN EW / /
SYSTEM HB
BLUEBACK S-COR
TIMER SUB-VOL
CONTRAST UP SUB-CON
COLOUR UP SUB-COL
BRIGHTNESS UP SUB-BRI
TINT UP TINT SUB TINT
SHARPNESS UP SUB-SHP
*1 : For each CH, before
changing service mode setting.
CX34K3
4-1 4-2
After short JA122 & 124, and turn on the main power switch, read data from E2PROM address 00H ~ 03H, and compare to the list below, if different, initialize the E2PROM.
Address : Data Address : Data
00H : 55H 02H : 43H 01H : 4FH 03H : A1H
EEPROM ITEMS OSD DATA LENGTH
AGC TAKE OVER POINT AGC 0~63 14 ADJ VERTICAL SLOPE V-LIN 0~63 32 ADJ VERTICAL AMPLITUDE V-AMP 0~63 32 ADJ VERTICAL SHIFT V-CENT 0~63 32 ADJ HORIZONTAL SHIFT H-CENT 0~63 32 ADJ S-CORRECTION S-COR 0~63 0 FIX WHITE POINT RED STD WHITE TEMP DRI-RS 0~63 32 FIX WHITE POINT GREEN STD WHITE TEMP DRI-GS 0~63 32 ADJ WHITE POINT BLUE STD WHITE TEMP DRI-BS 0~63 32 ADJ WHITE POINT RED WARM WHITE TEMP DRI-RW 0~63 32 FIX WHITE POINT GREEN WARM WHITE TEMP DRI-GW 0~63 32 FIX (DRI-GS)-7 DATA WHITE POINT BLUE WARM WHITE TEMP DRI-BW 0~63 32 FIX (DRI-BS)-7 DATA WHITE POINT RED COOL WHITE TEMP DRI-RC 0~63 25 FIX (DRI-BS)-7 DATA WHITE POINT GREEN COOL WHITE TEMP DRI-GC 0~63 32 FIX (DRI-GS)-7 DATA WHITE POINT BLUE COOL WHITE TEMP DRI-BC 0~63 63 FIX (DRI-BS)SAMEDATA MAX VOLUME SUB-VOL 0~63 63 FIX SUB CONTRAST SUB-CON 0~63 63 FIX SUB COLOUR SUB-COL 0~63 32 ADJ
5
SUB BRIGHTNESS SUB-BRI 0~63 32 ADJ SUB TINT SUB-TINT 0~63 32 ADJ SUB SHARPNESS SUB-SHP 0~63 32 (20) ADJ *1 MAX HOTEL VOLUME HTL-VOL 0~63 32 ADJ HOTEL PROGRAM NUMBER HTL-PRG OSD GRB REFERENCE RGB 0~15 15 FIX BLACK LEVEL OFF-SET R CUT-R 0~15 8 FIX BLACK LEVEL OFF-SET B CUT-B 0~15 8 FIX CATHODE DRIVE LEVEL CDL 0~15 0 (2) FIX *2 Y-DELAY TIME FOR PAL(TV) [YD] DL-PT 0~15 12 FIX Y-DELAY TIME FOR SECAM(TV) [YD] DL-ST 0~15 15 FIX Y-DELAY TIME FOR N358 (TV) [YD] DL-3T 0~15 12 FIX Y-DELAY TIME FOR N443 (TV) [YD] DL-4T 0~15 12 FIX Y-DELAY TIME FOR B/W (TV) [YD] DL-TV 0~15 12 FIX Y-DELAY TIME FOR PAL (AV) [YD] DL-PA 0~15 12 FIX Y-DELAY TIME FOR SECAM (AV) [YD] DL-SA 0~15 15 FIX Y-DELAY TIME FOR N358 (AV) [YD] DL-3A 0~15 12 FIX Y-DELAY TIME FOR N443 (AV) [YD] DL-4A 0~15 12 FIX Y-DELAY TIME FOR B/W (AV) [YD] DL-AV 0~15 12 FIX COLOUR OFFSET (PAL) COL-OP 0~15 8 FIX COLOUR OFFSET (SECAM) COL-OS 0~15 8 FIX COLOUR OFFSET (NTSC358) COL-03 0~15 4 FIX COLOUR OFFSET (NTSC443) COL-O4 0~15 4 FIX SHARPNESS OFFSET (PAL) SHP-OP 0~15 8 FIX SHARPNESS OFFSET (SECAM) SHP-OS 0~15 4 FIX
0~99 OR>99FOR NONE
INITIAL DATA FIX/ADJ
255 FIX
5-1 5-2
REMARK
EEPROM ITEMS OSD DATA LENGTH
SHARPNESS OFFSET (NTSC358) SHP-O3 0~15 12 FIX SHARPNESS OFFSET (NTSC443) SHP-O4 0~15 8 FIX VERTICAL SCAN DISABLE VSD BLACK STRETCH BKS AUT OMATIC VOLUME LEVELING AVL FAST FILTER IF-PLL FFI ENABLE VERTICAL GUARD (RGB BLANKING) EVG EHT TRACKING MODE (HCO) EHT OVERSCAN SWITCH OFF OSO AUTO COLOUR LIMIT ACL FORCED COLOUR LIMIT FCO SOUND SYSTEM M S-M SOUND SYSTEM DK S-DK SOUND SYSTEM I S-I SOUND SYSTEM BG S-BG PLAYBACK SECAM P-SECAM FE (RF) NTSC 3.58 F-N358 FE (RF) NTSC 4.43 F-N443 FE (RF) SECAM F-SECAM VIDEO MUTE AT IDENT LOSS VMI VIDEO MUTE AT PROGRAM/SOURCE CHANGE HOTEL MODE HTL REDUCED FM DEMODULATOR GAIN FORBTSC SIGNAL NUMBER OF EXTERNAL AV SOURCE AV FM WINDOW SELECTION FMWS SOUND MUTE BIT 0 SM0 SOUND MUTE BIT 1 SM1 THAI LANGUAGE THA ARABIC LANGUAGE ARA MALAY LANGUAGE MAL CHINESE LANGUAGE CHI FRENCH LANGUAGE FRE RUSSIAN LANGUAGE RUS FORCED V-SYNC SLICING LEVEL FSL SYNC OF OSD HP2 TUNER CPT CRT BILINGUAL BIL IF AGC SPEED BIT 0 AGC0 IF AGC SPEED BIT 1 AGC1 PHI-1 TIME CONSTANT (RF) FOA-FE PHI-1 TIME CONSTANT (RF) FOB-FE PHI-1 TIME CONSTANT (OFF AIR) FOA-AV PHI-1 TIME CONSTANT (OFF AIR) FOB-AV
0(DISABLE)/1(ENABLE) 0(DISABLE)/1(ENABLE) 0(DISABLE)/1(ENABLE) 0(DISABLE)/1(ENABLE) 0(DISABLE)/1(ENABLE) 0(DISABLE)/1(ENABLE) 0(DISABLE)/1(ENABLE) 0(DISABLE)/1(ENABLE) 0(DISABLE)/1(ENABLE) 0(DISABLE)/1(ENABLE) 0(DISABLE)/1(ENABLE) 0(DISABLE)/1(ENABLE) 0(DISABLE)/1(ENABLE) 0(DISABLE)/1(ENABLE) 0(DISABLE)/1(ENABLE) 0(DISABLE)/1(ENABLE) 0(DISABLE)/1(ENABLE) 0(DISABLE)/1(ENABLE)
VMC
0(DISABLE)/1(ENABLE) 0(DISABLE)/1(ENABLE)
BTSC
0(DISABLE)/1(ENABLE)
0 FOR1 AV/1 FOR 2AV 0(DISABLE)/1(ENABLE) 0(DISABLE)/1(ENABLE) 0(DISABLE)/1(ENABLE) 0(DISABLE)/1(ENABLE) 0(DISABLE)/1(ENABLE) 0(DISABLE)/1(ENABLE) 0(DISABLE)/1(ENABLE) 0(DISABLE)/1(ENABLE) 0(DISABLE)/1(ENABLE) 0(DISABLE)/1(ENABLE) 0(DISABLE)/1(ENABLE) 0(DISABLE)/1(ENABLE) 0(DISABLE)/1(ENABLE) 0(DISABLE)/1(ENABLE) 0(DISABLE)/1(ENABLE) 0(DISABLE)/1(ENABLE) 0(DISABLE)/1(ENABLE) 0(DISABLE)/1(ENABLE) 0(DISABLE)/1(ENABLE)
INITIAL DATA FIX/ADJ
0 FIX 1 FIX 1 FIX 0 FIX 1 FIX ONLY BLK 1 FIX 0 FIX 0 FIX 0 FIX 0 FIX 0 FIX *3 0 FIX *3 1 FIX 1 FIX *3 0 FIX 1 FIX 1 FIX *3 1 FIX 1 FIX 0 FIX 0 FIX 1 FIX 0 FIX 1 FIX 0 FIX 0 FIX 1 FIX 1 FIX 1 FIX 1 FIX 1 FIX 0 FIX 0 FIX 0 FIX 0 FIX 1 FIX 0 FIX 0 FIX 0 FIX 1 FIX 1 FIX
Note :
Fixed data, please do not change without specific instruction. *1: Manually change to "20". *2: Manually change to "2". *3: Manually change to "0"
REMARK
CX34K3
INITIAL SETTING
(1)In service mode, After execute select POS 1, store the following tuning data in E2PROM.
CH-No. Fv (MHz) SOUND SYS CH-No. Fv (MHz) SOUND SYS
0 0 590.25 B/G 1 48.25 B/G 1 46.25 B/G 2 62.25 B/G 2 64.25 B/G 3 77.25 D/K 3 86.25 B/G 4 175.25 B/G 4 95.25 B/G 5 182.25 B/G 5 138.25 B/G 6 183.25 D/K 6 175.25 B/G 7 191.25 D/K 7 182.25 B/G 8 196.25 B/G 8 189.25 B/G
9 199.25 M 9 196.25 B/G 10 210.25 B/G 10 209.25 B/G 11 224.25 B/G 11 216.25 B/G 12 471.25 B/G 12 13 487.25 I 13 14 503.25 B/G 14 15 575.25 B/G 15 16 583.25 B/G 16 17 599.25 B/G 17 18 621.25 M 18 527.25 B/G
6
19 639.25 D/K 19 847.25 B/G 20 703.25 B/G 20 48.25 B/G 21 735.25 I 21 175.25 B/G 22 767.25 B/G 22 210.25 B/G 23 815.25 B/G 23 224.25 B/G 24 855.25 I 24 575.25 B/G 25 855.25 B/G 25 599.25 B/G 26 55.25 M 26 767.25 B/G 27 83.25 M 27 183.25 M 28 183.25 M 28 193.25 M 29 193.25 M 29 112.25 B/G 30 217.25 M 30 168.25 B/G 31 471.25 M 31 32 477.25 M 32 294.25 B/G 33 693.25 M 33 463.25 B/G 34 34 174.95 B/G 35 112.25 B/G 35 175.55 B/G 36 168.25 B/G 36 37 37 599.25 B/G 38 294.25 B/G 38 39 463.25 B/G 39 40 40 41 647.25 B/G 41 42 663.25 B/G 42 43 679.25 B/G 43 44 174.95 B/G 45 175.55 B/G
MCL1 MCL2
SHIPPING SETTING & CHECKING
(1)The following default data has been factory-set for the E2PROM.
LAST PROGRAM/CHANNEL 1 FLASHBACK PROGARM/CH 1
After pressing "MODEL SETTING", 0 Channel will be skipped.
ITEMS DATA SETTING
DIGIT 1 C-SYSTEM AUTO S-SYSTEM *1
SKIP OFF
AFC ON
VOLUME 1
CONTRAST 60 (MAX)
COLOUR 0 (CENTER)
BRIGHTNESS 0 (CENTER)
TINT 0 (CENTER) SHARPNESS 0 (CENTER) WHITE TEMP ST ANDARD
REMINDER TIMER In-active, "--:--"
ON TIMER In-active, "--:--"
OFF TIMER In-active, "--:--"
LAST POWER POWER-ON
LANGUAGE ENGLISH
BLUE BACK MUTE OFF
HOTEL MODE OFF
0 CHANNEL SKIP ON
CX34K3
6-1 6-2
PIF ADJUSTMENT
NO. Adjustment part Adjusting procedure and conditions Waveform and others
Tuner IFT
1
(PRESET)
2 RF-AGC
TAKE OVER POINT ADJUSTMENT
7
(I2C BUS CONTROL)
1. Get the tuner ready to receive the E-9 CH signal, but with no signal input. Adjust the PLL data.
2. Connect the sweep generator's output cable to the tuner antenna. (RF SWEEP)
3. Adjust the sw eep generator's to 80dBuV .
4. Connect the response lead (use LOW IMPED­ANCE probe with wave detector; see Fig.1) to the tuner's IF output terminal. (This terminal must have the probe alone connected).
5. Set the RF AGC to 0 - 6 V with no saturation with the waveform.
6. Adjust the tuner IF coil to obtain the wav ef orm as shown in Fig. 2.
Note:Be sure to keep the tuner cover in
position during this adjustment.
1. Receive "PAL COLOUR BAR" signal. » Signal Strength: 54 ±1 dBµV (75 ohm open)
2. Connect the oscilloscope to TP210 (Tuner’s AGC Terminal) as shown in Fig. 3.
Oscilloscope
0.1V
Bias box
+
» Bias box: About 4.5 V
TP210+
TV Set
Fig. 3
3. Call "AG" mode in service mode. Adjust the "AG" bus data to obtain the Tuner output pin drop 0.1 V below maximum voltage.
4. Change the antenna input signal to 63~67dBµV, and make sure there is no noise.
5. Turn up the input signal to 90~95 dBµV to be sure that there is no cross modulation beat.
Oscilloscope
Note:
For the 50 ohm signal strength gauge, when not using 50/75 impedance adapter, signal strength is 52 ±1 dBµV(75 ohm open), instead of 54 ±1 dBµV (75 ohm open).
Precaution:
The loss of using impedance adapter
1n60
10k
100k
75ohm
Fig. 1
E-9 CH
P C
Fig. 2
1000p
IF OUT
-1.5+/-0.8dB
PURITY ADJUSTMENT
NO. Adjustment part Adjusting procedure and conditions Waveform and others
PURITY ADJ. 1. Receive the GREEN-ONLY signal. Adjust the
1
beam current to about 500 µA.
2. Degauss the CRT enough with the degausing coil.
Note: Follow the Job Instruction Sheet to ad-
just the magnetic field.
Vertical Bv : +0.030 mT
(0.30 gauss)
Horizontal Bh : +0.020 mT
(0.20 gauss)
3. Maintain the purity magnet at the zero magnetic field and keep the static convergence roughly adjusted.
4. Observe the points a, b as shown in Fig. 4-1 through the microscope. Adjust the landing to the rank A requirements.
5. Orient the raster rotation to 0 eastward.
6. Tighten up the deflection coil screws. » Tightening torque: 108 ± 20 N (11 ±2 kgf)
7. Make sure the CRT corners landing meet the A rank requirements. If not, stick the magnet sheet to correct it.
Note: This adjustment must be done after
warming up the unit for 30 minutes or longer with a beam current over 500 µA.
Note: Set the service mode by JA122 &
JA124 (short) then press factory proc­ess R/C RGB key to change to RGB mono colour mode.
* For the following colours press R/C RGB k e y
to change.
Green-only
Blue-only
Signal-colour
screen cleared
Red-only
a
b
Fig. 4-1
A
B
A = B
Fig. 4-2
Rank "A"
(on the right of the CRT)
A
B
A = B
Fig. 4-3
Rank "A"
(on the left of the CRT)
* Press R/C RGB key for 1 second
in NORMAL MODE, the colour will change to RGB mono colour mode.
The TEXT K ey "R. G. Cy" K ey can be directly use to change to other colours screen.
7-1 7-2
CX34K3
CONVERGENCE ADJUSTMENT
NO. Adjustment part Adjusting procedure and conditions Waveform and others
1 CONVERGENCE
ADJ. (To be done after the purity adjustment.)
8
1. Receive the "Crosshatch Pattern" signal.
2. Using the remote controller, call NORMAL mode.
Static convergence
1. Turn the 4-pole magnet to a proper opening angle in order to superpose the blue and red colours.
2. Turn the 6-pole magnet to a proper opening angle in order to superpose the green colour over the blue and red colours.
Dynamic convergence
1. Adjust the convergence on the fringes of the screen in the following steps.
a) Fig. 5-1: Drive the wedge at point "a" and
swing the deflection coil upward.
b) Fig. 5-2: Drive the wedge at points "b"
and "c" and swing the deflection coil downward.
c) Fig. 5-3: Drive the "c" wedge deeper and
swing the deflection coil rightward.
d) Fig. 5-4: Drive the "b" wedge deeper and
swing the deflection coil leftward.
2. Fix all the wedges on the CRT and apply glass tape over them.
3. Apply lacquer to the deflection yoke lock scre w , magnet unit (purity, 4-pole, 6-pole magnets) and magnet unit lock screw.
Finally received the Red-only and Blue-only signals to make sure there is no other colours on the screen.
B G R
R G B
About 100°
Lacquer
Wedge "b"
4-pole magnet
BGR
Fig. 5-1
RGB
Fig. 5-2
RGB
Fig. 5-3
BGR
Fig. 5-4
Wedge "a"
Fig. 5-5
6-pole magnet
CRT neck
B G R
R G B
About 100°
Wedge "c"
CRT CUT-OFF, BACKGROUND AND SUB-CONTRAST ADJUSTMENT
NO. Adjustment part Adjusting procedure and conditions Waveform and others
CRT CUTOFF
1
ADJUSTMENT
2
C BUS
(I CONTROL)
2 SUB-
BRIGHTNESS ADJUSMENT
2
C BUS
(I CONTROL)
3 WHITE
BALANCE SERVICE MODE ADJ.
2
C BUS
(I CONTROL)
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.(TP851)
Range : 1 V/Div (DC) Sweep : 5 msec/Div
4. Adjust SCREEN VR, so that the tip of signal reach 3.0 +0.1 Vdc.
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 "WHITE" Pattern with BURST signal.
2. Press R/C to set Picture NORMAL condition.
3. Connect the DC miliammeter between the TP602 (-) and TP603 (+).
4. Check Beam current should be around 1,100 µA.
5. Set it to service mode and adjust the " WPG" (White Point-G), "WPB" (White Point-B) data to have a colour temperature of 12,300°K (white). * Note .
6. Receive "White" pattern, with BURST Signal, and set Brightness Y by generator, to ** 10 cd/m (Minolta CA-100) by reducing Luminate Y signal.
7. Adjust "CUT -R" & "CUT -G" to get 12,300°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 700µA.
* Adjust DRI-GC/GW, DR-BC/BW as following
data, after finishing DRI-GS and DRI-BS:
DRI-GC=DRI-GW="DRI-GS"-7: DRI-BW="DRI-BS"-7: DRI-RC=25: DRI-BC=DRI-BS: DRI-RW=32
** Low=10cd/m2: High=120cd/m
2
3.0Vdc
1 V
0
Fig. 6
1 2 3 4 5
1, 2 and 3 are in same black lev el.
Fig. 7
* 12,300°K X : 0.272
Y : 0.275
(MINOLTA COLOUR ANALYZER
CA-100)
*Note: Above Data can be UP/
DOWN by Volume key.
2
CX34K3
Purity magnet
Lacquer
Fig. 5-6
4 Maximum
beam check
40
mm
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 800 ±100 µA.
8-1 8-2
HORIZONTAL AND VERTICAL DEFLECTION LOOP ADJUSTMENT
NO. Adjustment part Adjusting procedure and conditions Waveform and others
1
V-LINEARITY
2
C BUS
(I CONTROL)
V-CENTER
2
2
C BUS
(I CONTROL)
V - AMP
3
2
C BUS
(I CONTROL)
4
S-CORREC­TION (I BUS CON­TROL)
5
H - CENTER
6
SUB­SHARPNESS
1. Receive Monoscope Pattern Signal.
2. Call the "V-LIN" mode.
3. Increase or decrease "V -LIN" b y Volume key till the horizontal line in the center of monoscope is just at the position where the blanking starts.
1. Call the "V-CENT" mode.
2. Increase or decrease "V-CENT" by Volume k ey till the picture is centered.
1. Call the "V-AMP" mode.
2. Increase or decrease "V - AMP" b y Volume key to set overscan of 9.5% typical. Adjustment Spec 9.5% range +1% -0%.
FIXED DATA, NO NEED TO ADJUST.
2
C
1. Call the "H-CENT" mode.
2. Increase or decrease "H-CENT" by Volume key to center the picture horizontal.
1. Call the "SUB-SHP" mode.
2. Set "SUB-SHP" to 20 by pressing V olume do wn key.
9
Focus
7
adjustment
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.
PAL CHROMA ADJUSTMENT
NO. Adjustment part Adjusting procedure and conditions Waveform and others
SUB COLOUR
1
2
C BUS
(I CONTROL)
1. Receive the "PAL Colour Bar" signal.
2. Press R/C to set Picture Normal condition.
3. Connect the oscilloscope to Red cathode (TP854).
» Range : 20 V/div . (AC) (Use 10:1 probe) » Sweep time : 10 µsec/div .
4. Using the R/C call "SUB COL" in SERVICE mode. Adjust SUB COLOUR b us data, so that the 75% White & Red portions of PAL Colour Bar be at the same level shown as Fig. 8.
5. Clear the SERVICE mode.
W
75%
Cy
G
Y 100%W
Fig. 8
Mg R
NTSC CHROMA ADJUSTMENT
NO. Adjustment part Adjusting procedure and conditions Waveform and others
1 SUB-TINT
2
(I
C BUS
CONTROL)
1. Receive the "NTSC3.58 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 ser vice mode. Adjust the "SUB-TINT" bus data to obtain the same level of wa veform shown as Fig. 9.
4. Clear the SER VICE mode.
SAME LEVEL
Y
W
Cy G Mg R
Fig. 9
B
PROTECTOR OPERATION CHECKING
NO. Adjustment part Adjusting procedure and conditions Waveform and others
1 BEAM
PROTECTOR
2H, V
PROTECTOR
3 Other
protectors
1. Receive "Monoscope Pattern" signal.
2. Set CONTRAST MAX.
3. Set BRIGHT MAX.
4. During the Collector & Emitter of Q883/5/7 short, make sure the protector ON and switch to standby mode.
1. Receive "Monoscope Pattern" signal.
2. Connect output of Bias Box to D607 cathode (R606 side).
3. Set voltage of Bias Bo x to 18V and make sure the protector is not work.
4. Set voltage of Bias Box to 27V, and make sure the protector is work.
1. Once finish rectified Electrolytic Capacitor short testing in +B line, check all possible damaged components on +B line. (Use random selected set for inspection)
* Select one of Q883/5/7 to do
each short test.
A/V INPUT AND OUTPUT CHECKING
B
NO. Adjustment part Adjusting procedure and conditions Waveform and others
VIDEO AND
1
AUDIO OUT­PUT CHECK
2 VIDEO AND
AUDIO INPUT CHECK
1. Receive the "PAL Colour Bar" signal (100% White Color Bar, Sound 400 Hz 100% Mod.)
2. Terminate the Video output with a 75 ohm im­pedance. Mak e sure the output is as specified (1.0 Vp-p ±3 dB).
3. Terminate the Audio output with a 10k ohm im­pedance. Mak e sure the output is as specified (1.76 Vp-p ±3 dB).
1. Using the TV/AV key on the remote controller, make sure that the modes change in order of TV , A V1, A V2 & TV again and the video & audio output are according to the input terminal for each mode.
CX34K3
9-1 9-2
FUNCTION OPERATION CHECKING (VIDEO AND AUDIO)
NO. Adjustment part Adjusting procedure and conditions Waveform and others
CONTRAST
1
key
2 COLOUR key 1. Receive "Colour Bar" signal.
3 BRIGHTNESS
key
4 TINT key 1. Receive the "NTSC Colour Bar" signal thru AV
1. Receive "Monoscope Pattern" signal.
2. Set P-Mode to select CONTRAST.
3. Press Volume Up/Down key to check whether the CONTRAST effect is OK or not.
2. Set P-Mode to select COLOUR.
3. Press Volume Up/Down key to check whether the COLOUR effect is OK or not.
1. Receive "Monoscope Pattern" signal.
2. Set P-Mode to select BRIGHTNESS.
3. Press Volume Up/Down key to check whether the BRIGHTNESS effect is OK or not
in.
2. Set P-Mode to select TINT.
3. Press Volume Up/Down key to check TINT, UP for GREEN direction and DOWN f or PURPLE direction whether is OK or not.
FUNCTION OPERATION CHECKING (VIDEO AND AUDIO)
(Continued)
NO. Adjustment part Adjusting procedure and conditions Waveform and others
9
Colour system
1. Receive the "PAL COLOUR BAR" signal, press the COLOUR SYSTEM key to select modes except PAL, check the COLOUR is not working properly. Then, select the "PAL" mode. Check again its colour so that it is working properly.
2. Receive "NTSC 4.43" signal, press COLOUR SYSTEM key to select modes except NTSC
4.43, check the COLOUR is not working properly. Then, select the "NTSC 4.43" mode. Check again its colour so that it is working properly.
3. Receive "NTSC 4.43/3.58 COLOUR BAR" sig­nal thru AV, press COLOUR SYSTEM key to select modes except N4.43/3.58, check the COLOUR is not working properly. Then, select the "NTSC 4.43/3.58" mode. Check again its colour so that it is working properly.
CX34K3
10
5 SHARPNESS
Key
6 CH DISPLA Y
COLOUR
7 NORMAL Key 1. Once in PICTURE Mode, and the NORMAL
8 White Temp 1. Receive "Monoscope P attern" signal.
1. Receive "Monoscope Pattern" signal.
2. Set P-mode to select SHARPNESS.
3. Press Volume Up/Down key to check whether the SHARPNESS effect is OK or not.
1. All Ch (1~99) will hav e an OSD display of the channel number in green colour under AFT ON condition.
key is pressed, all the settings will be present to normal setting. (Normal setting value for every mode).
» CONTRAST : MAX » COLOUR : CENTER » BRIGHTNESS : CENTER » TINT : CENTER » SHARPNESS : CENTER
2. Set FUNCTION to select WHITE TEMP.
3. Press Volume Up/Down key to check WHITE TEMP Option, STANDARD: NORMAL SETTING, WARM for more REDDISH direction changing, COOL for more BLUISH direction changing.
10-1 10-2
Note:If nothing is display mean
contrast, colour, bright, tint or sharpness are all in nor­mal setting.
10 NOISE MUTE
CHECKING
11 OSD
LANGUA GE QUANTITY CHECK
1. Receive "PAL COLOUR BAR" signal.
2. Turn up the volume control to maximum, make sure the sound is heard from the speakers. Then put the unit in no signal state.
3. Check the sound mute is effective.
4. Finally turn sound level of CTV to minimum.
Check OSD LANGUAGE quantity and type as English, Russian, Chinese, French, Arabic and Malay.
HEADPHONE JA CK CHECKING
NO. Adjustment part Adjusting procedure and conditions Waveform and others
1 HEADPHONE
OUTPUT CHECKING
1. Receive PAL COLOUR PAR with SOUND 400Hz, 100% MODULATION (±50kHz Dev).
2. Maximum volume, and check the headphone output with 400Hz sound and no sound out from speaker.
11
MEMORY MAP
ADDRESS
(HEX) D7 D6 D5 D4 D3 D2 D1 D0
00 PASS WORD 55 00-FF 01 02 03 04 05 06 07 08 09 0A 0B 0C 0D 0E 0F 10 11 12 13 14 15 16 17 18 19 1A 1B 1C 1D 1E 1F 20 21 22 23 24 25 26 27 28 29 2A 2B 2C 2D 2E 2F 30 31 32 33 34 35 36 37 38 39 3A 3B 3C 3D 3E 3F
MODEL MODEL
DATA
PASS WORD 4F 00-FF PASS WORD 43 00-FF PASS WORD A1 00-FF
AGC TAKE-OVER 0E 00-3F
V-SLOPE 20 00-3F
V-AMPLITUDE 20 00-3F
V-CENTER 20 00-3F H-CENTER 20 00-3F
H-SIZE 20 00-3F
EW-PARALLELOGRAM 20 00-3F
EW-PARABOLA/WIDTH 20 00-3F
EW-UPPER CORNER 20 00-3F EW-LOWER CORNER 20 00-3F
EW-TRAPEZIUM 20 00-3F
HORIZONTAL-BOW 20 00-3F
S-CORRECTION 00 00-3F
DRIVE-R (STANDARD) 20 00-3F DRIVE-G (STANDARD) 20 00-3F DRIVE-B (STANDARD) 20 00-3F
DRIVE-R (WARM) 20 00-3F DRIVE-G (WARM) 20 00-3F DRIVE-B (WARM) 20 00-3F DRIVE-R (COOL) 19 00-3F DRIVE-G (COOL) 20 00-3F DRIVE-B (COOL) 20 00-3F
SUB-VOLUME 3F 00-3F
SUB-CONTRAST 3F 00-3F
SUB-COLOUR 20 00-3F
SUB-BRIGHTNESS 20 00-3F
SUB-TINT 20 00-3F
SUB-SHARPNESS 20 00-3F
HTL-VOLUME 20 00-3F
HTL-POSITION FF 00-FF
OSD-REFERENCE 0F 00-0F CUTOFF LEVEL -OFFSET R 08 00-0F CUTOFF LEVEL -OFFSET B 08 00-0F
CATHODE DRIVE LEVEL 00 00-0F
Y-DELAY (TV PAL) 0C 00-0F
Y-DELAY (TV SECAM) 0F 00-0F
Y-DELAY (TV N358) 0C 00-0F Y-DELAY (TV N443) 0C 00-0F
Y-DELAY (TV BW) 0C 00-0F
Y-DELAY (AV PAL) 0C 00-0F
Y-DELAY (AV SECAM) 0F 00-0F
Y-DELAY (AV N443) 0C 00-0F Y-DELAY (AV N358) 0C 00-0F
Y-DELAY (AV BW) 0C 00-0F
COLOUR-OFFSET (PAL) 08 00-0F COLOUR-OFFSET (SECAM) 08 00-0F COLOUR-OFFSET (N443) 04 00-0F COLOUR-OFFSET (N358) 04 00-0F
SHARPNESS-OFFSET (PAL) 08 00-0F
MICO EEPROM EEPROM CHASSIS CTV FINAL
DEFAULT RANGE
WRITE(CPU) CHECK DATA CHECK TYPE CHECK DATA CHECK TYPE
LAST INITIAL
SETTING DATA
REMARK
LETTER NO. LETTER NO.
11-1 11-2
CX34K3
+ 25 hidden pages