Colour Television Chassis MG2.1E AA mg21frtp.eps 290798 ServiceManual Content 1. Technical specifications 2. Connection facilities, chassis overview 3. Safety instructions, maintenance, warnings and Notes 4. Mechanical instructions 5. Service modes, DST, error messages, protections, faultfinding and repair tips including: Errorcodes-table Protection-structure (overview and detailed) Fault find tree 6.
MG2.
2 Specification connections 2.1 Specification connections 2 MG2.1E Front connections 5678- TOP CONTROL FL7/FL8 STYLING Blue Audio Blue CVBSstatus L (0.5Vrms ≥10kΩ) (0.7Vpp/75Ω) 3 v j j 0-1.3V:INT 4.5-7V:EXT 16:9 3.5 SK 1 AUDIO R AUDIO L VIDEO SVHS AUTO TV SENSOR (OPTIONAL) 'IRRECEIVER' 'IR-SERVICE-LED' 91011121314- BICOLOUR STANDBY LED Figure 2-1 2.1.1 2.1.2 Audio/Video - Video - Audio - Audio 1Vpp/75Ω L(0.5Vrms ≥10kΩ) R(0.5Vrms ≥10kΩ) jq jq jq - Headpho ne (32-600Ω ≥10mW) ot 2.
2.2.3 2 MG2.1E Specification connections External 3 (in): CVBS+Audio (optional) 4.5-7V:EXT 16:9 j 9.5-12V:EXT 4:3 12345678- F Audio R (0.5Vrms >10kΩ) j v Audio Audio L (0.5Vrms>10kΩ) CVBSstatus 0-1.3V:INT j 9101112131415161718192021- v v CVBS CVBS CVBS Earth socket j (1Vpp/75Ω) CRT/SCAVEM PANEL TOP CONTROL PANEL P MAINSWITCH PANEL E LARGE SIGNAL PANEL A O SIDE I/O PANEL SHIELDING K SMALL SIGNAL PANEL CL 86532057_002.
3 Safety instructions, Maintenance instruction, 3.1 Safety instructions, Maintenance instruction, Warnings and Notes 3 Safety instructions for repairs – – – 1. Safety regulations require that during a repair: – the set should be connected to the mains via an isolating transformer; – safety components, indicated by the symbol ∆, should be replaced by components identical to the original ones; – when replacing the CRT, safety goggles must be worn. 2.
3.4 3 MG2.1E Safety instructions, Maintenance instruction, Notes 1. The direct voltages and oscillograms should be measured with regard to the tuner earth , or hot earth as this is called (see fig. 3.3) 2. The direct voltages and oscillograms shown in the diagrams are indicative and should be measured in the Service Default Mode (see chapter 8) with a colour bar signal and stereo sound (L:3 kHz, R:1 kHz unless stated otherwise) and picture carrier at 475.25 MHz. 3.
4 Mechanical instructions 4.1 Mechanical instructions 4 MG2.1E Removing the rear cover A 7 Side I/O assembly A SSP - bracket LSP - topbracket A A LSP - bracket 1 2 A A 1 Bottom tray A 2 CL 86532042_002.AI 240798 or A A or A' A Figure 4-3 A or A or CL 86532042_001.AI 160798 Figure 4-1 1. Remove 1 screw in case of a 2-scart I/O coverplate and 2 screws in case of a 3-scart I/O coverplate (see figure 4.2). 2. Remove the I/O coverplate by releasing the snap at the left side.
MG2.1E 4 Mechanical instructions 2. Press the board upwards and remove the board from the bracket. 4.6 Removing the top control board Top control board 2 1 CL 86532042_006.ai 160798 CL 86532042_004.AI 240798 Figure 4-5 1. Referring to previous Service position one must remove the SSP and LSP from bottom tray by pulling back these two panels. 2. Disconnect the SSP from the LSP bracket. 3. The two panels must be shifted some 25 cm to the right.
5 Service modes, error codes and protections 5 Service modes, error codes and protections 5.1 In this chapter the following paragraphs are included: 5.1 Test points 5.2 Service modes and Dealer Service Tool and ComPair (including fault finding tips related to CSM-mode) 5.3 Error codes 5.4 Protections Fault find tree Test points The MG2.1E chassis is equipped with test points in the service printing.
5 MG2.1E Service modes, error codes and protections "cursor-up" and "cursor-down" keys), or the buttons on the TV or by switching off the TV set with the mains switch. control handset after pressing the red button for picture menu and selecting "contrast". Detailed explanation of the Customer service Mode After switching on the Customer Service Menu the following screen will appear: Line 7: LS Colour; gives the Last Status of the colour saturation, as set by the customer.
5 Service modes, error codes and protections sound menu, selecting "Surround settings" and selecting "Rear volume". This feature is only available when surround mode is in "Dolby Pro Logic" or "Hall". Line 13: Centre Volume; gives the volume value of the centre loudspeakers. This value can vary from 0 (minimum volume) to 63 (maximum volume).
MG2.1E 5 Service modes, error codes and protections Fading picture Digital scan effect. Check line 14 "DNR". The status of "DNR" is 'med' or 'max'. Reduce "DNR" to 'min' or switch off the digital scan. White line around picture elements and text 1. Press "Smart Picture" button on the Remote Control handset. In case picture improves, reduce the sharpness value. The new value(s) are automatically stored for all TV channels. 2. After switching on the Customer Service Mode the picture is OK.
5 Service modes, error codes and protections Note: The diagnose mode can not be entered if the SAM is activated. Compair ComPair (Computer Aided Repair) is a service tool for Philips Consumer Electronics products. ComPair is a further development on the DST service remote control allowing faster and more accurate diagnostics. ComPair has three big advantages: • • • ComPair helps you to quickly get an understanding how to repair the MG2.
MG2.1E 5 Service modes, error codes and protections automatically pop-up the schematic with the location of C2568 marked. Stepwise Startup /Shutdown feature of set can be used via Compair Stepwise startup explanation Via ComPair the stepwise startup (see also chapter 4) can be realised. This is very helpful when a protection is activated. State Description mode Display leds Errorcode possible 0 Low Power Standby/uC in Stby Red on None 1 High Power Standby/set in Stby Red 0.
5 Service modes, error codes and protections how long it exists in the error buffer. When for any reason a false raised error exists in the buffer, it will be deleted after 50 hours. If this error still is actual after 50 hours, it will be raised again. In this way is safeguarded that history of error codes is stored. Sometimes it is an option to first write down the error MG2.1E 15 buffer content, reset the buffer, and look again which error codes are generated by the set. 5.3.
MG2.1E 5 Service modes, error codes and protections alike the usual Standby, however the micro-processor has to remain in normal operation completely. • The protections of the MG2.1E can be divided in 4 groups ; • • • • 5.4.2 Protection from I2C-busses (Fast and Slow) or I2C-IC errors (device errors). Protection from the inputs on the OTC. Protections from the status register of the HOP (communicated via I2C-bus). DC-protection (sound amplifiers) monitored on OTC.
5 3V3 St-by 5V2 (65) slow OTC (3) St-by 5V2 I/O video I/O audio Tuner Picnic Prozonic FBX (10) (11) (5) (50) (51) (77) Mainswitch 1050 Mains (20) (15) (25) (26) (21) 6570 +5Vst-by 7021 8V6 5V2 +- (16V) (67) 7000/ 7001 7050 6052 5V2 (68) green red 6051 6571 IR 8V6 HOP HIP ITT EDRIC LTP 5Vst-by St-by IR 140V DC prot (76) 33V tuner FFS AUDIO FBCSO BC (74) I2C-F 6350 27V 7351 BC info 8V6 7438 6341 33V 7341 + 7484 RGB Video control - 1V EHT info E/W Hor. defl.
5 MG2.1E Service modes, error codes and protections I2C drivers Start Start cond. OK N Y Free the bus 5X N Y General I2C error Send adres data N ACKN Check device 5X Slow (65) Fast (66) N Y Bus blocked Stop N Y Free bus Device I2C error Slow 1102 (Tuner) (5) (50) 7609 (Picnic) 7608 (Prozonic) (51) 7501 (I/O Video) (10) Feature box (77) Fast NVM-bus 7402 (LTP) (21) 7770 (Dolby) (26) 7751 (ITT) (25) 7501 (HIP) (15) 7300 (HOP) (20) 7008 (NVM) (1) (2) jsp 86532047_036.
5 Service modes, error codes and protections MG2.1E E/W E.W. drive 6480 10V 3483// 3484 6485 3490 HOP 3493 + 3491 6344 (5) - 8V6 220K 1V LDP (73) 3492 33K 8V6 3340 6340 START/ STOP H DRIVE 8V6 6341 EHT info 7341 FLASH 8V6 8V6 6350 OTC 3350 7351 (74) 27V BC-prot 3352 3353 CL 86532092_013.
5 MG2.1E Service modes, error codes and protections HFB horizontal fly-back HOP Hdefl HFB (71) ϕ2 7421 5410 2420 Hdrive 3353 2419 VFB vertical fly-back HOP 6758 ϕ2 VFB (70) 27V 100µ 8V2 F R A M E Vpos Vneg 7600 Flyback gen PA Thermal prot Vdefl SM 86532047_039.
Figure 5-10 µP DCprot (76) 6570 6571 7556 5VST-by 7762 7001 7550 7761 7000 1002 7796 AUDIO 220V Main supply FFS -Vs +Vs -7V7 +7V7 Vbatt 8V6 5V2 +- Vs (16V) S 2700 L STANDBY + DC PROT C R 5 Service modes, error codes and protections MG2.1E SM 86532047_040.
START Figure 5-11 A See Table with error messages in chapter 5 of this manual, which device is causing the error. Make a note of the error messages. Hereafter reset the error buffer.
Figure 5-12 B Yes Picture OK ? Yes Does the screen give any light or picture ? Put the set in the SDMode Previously the set was switched off with the mains button while the set was in the Standby mode Yes Green LED OK No No No Starts with white screen and flyback lines, then protection and error 74 (F); Check, +200D +200A,R3373 L6373,C2370 1 3 4 4 1 3 1 X Yes Is the Heater on ? One of the colours is leading (F); Check the B,G,R,drivers IC7330,IC7340,IC7350 pin 8 The driver for the leading
Figure 5-13 E To ensure communication with the DST : Check/Replace (E); D6053 TS7050 IR-LED6052 R3063 R3064 Yes Error codes indication ? No No Check Option numbers. See sticker on CRT for default options Check/Replace (K7); Conn.
Figure 5-14 (K1,K3); , OK ? Yes (K3); IC7751 pin20 =18,4 Mhz ? Yes (K3); +5DA,+5DB OK? Yes (A1); +5V2 OK ? Yes (A4); +7V7,-7V7 OK ? Yes (A1); , = +Vs,-Vs ? Check of the Supply and X-tal section AUDIO Fault Finding Tree No No No No No No Check/replace (K1); IC7501,TS7111 Check/replace (K3); X1751 Check/replace (K3); L5751,L5752 C2765,C2766 Check/replace (A1); Fuse1201 D6223,C2222 IC7212,TS7214 Check/replace (A4); C2791,C2792 IC6770,IC6767 D6768,D6769 C2783,C2
Figure 5-15 Yes (K1); +33V OK? Yes (K1); X1525, X1526, X1527, X1528 OK ? Yes (K5); X1601 12MHz OK? Yes (K6); X1305 12MHz OK? Yes (K5); +3V3M1, +3V3M2 +3V3,+3A,+3D +5VA,+5M,+5V2-FB +5P OK? No No No No No No Check/replace (K1); D6101 (A1); R3567, R3569 Check/replace (K1); X1525X1528 IC7501 Check/replace (K5) X1601, IC7609 Check/replace (K6); X1305, IC7300 Check/replace (K5); IC7613 (A1); IC7212 Check/replace (K6); R3300 (K1); R3538 (A1); IC7213 D6223, Fuse1201 Check/replace (F); R3373 (
Figure 5-16 No No No No No No No Check/replace (K1); X1525X1528 IC7501 Check/replace (K5); X1601, IC7609 Check/replace (K6); X1305, IC7300 Check/replace (K5); IC7613 (A1); IC7212 Check/replace (K6); R3300 (K1); R3538 (A1); IC7213 D6223, Fuse 1201 Check/replace (F); R3373 (A2); D6441, R3443 Check/replace (F); R3372 (A2); D6460, Fuse 1460 Check/replace (A2); ,,,, TS7408,TS7409, TS7411,TS7421 T5430 (If too difficult: line repair kit 4822 310 11236) Yes (K6); OK? Yes HA o
. 7 Figure 5-17 NOTE: The protection mode can be overruled by putting the set into the SDMode. This should be done very carefully, because of the risk to damage the parts which the protection has been designed for !!! Overruling can only be done by shortcircuiting pin 2,3 of conn.0356 "PROTECTION MODE" 1 1 1 A 7 2 0 The Slow I 2C bus does not function. Isolate the I 2 C pins of the IC's one by one until the system gives any different reaction or another error indication.
8 Electrical alignments 8.1 Electrical alignments 8 MG2.1E General alignment conditions All electrical alignments should be made under the following conditions: – – – – Power supply voltage: 220-240V ± 10%; 50-60 Hz ± 5%. Warm-up time >10 minutes. Voltages and oscillograms are measured in relation to tuner earth (with exception to the voltages on the primary side of the power supply). Never use the cooling fins/plates as ground. Test probe: Ri > 10 MOHM, Ci < 20 pF. 8.
58 8 MG2.1E Electrical alignments can be aligned. Alignment is correct when DC-voltage is just below 3.8 V 8.5 Alignments and settings in the Service Alignment Menu 8.5.1 General Entering the SAM can be done in 2 ways: • CL 86532057_006.AI 170798 Figure 8-4 8.4 Alignments needing SAM-mode + measuring equipment (These alignments could be of interest when ICs (7501, TDA9320H ), or the EAROM (7008, ST24E16) are exchanged on the SSP.) 8.4.
8 Electrical alignments 'Option number': – All options together, expressed in two long numbers. The original factory setting for these numbers can be found on the picture tube sticker on the inside of the set. MG2.1E 29" 10 32" 10 'Luminance delays' With the 'Luminance delays' alignment the luminance information is placed on the chrominance information (brightness is pushed onto the colour). Use a colour bar/grey scale pattern as test signal. 'Store': – Store all alignments.
60 MG2.1E 8 Electrical alignments 1. Align 'V slope' (when aligning the below half of the picture is blanked). The middle line of the test pattern must be matched with the edge of this blanking/picture transient in the middle of the picture. Pushing > button again, gives you previous menu again. (This alignment is meant to align the zero-crossing of the frame-deflection to the mechanical middle of the picture tube.) 2.
8 Electrical alignments 8.7 Options in the Service Alignment Mode MG2.
62 8 MG2.1E Personal Electrical alignments Blue Mute Virgin Mode Auto store mode Demo Mode Enable Teletext TXT Preference East/West TXT – – 8.
9 Circuit description 9 Circuit description For the circuit description see the provisional Training Manual MG2.1E (4822 727 21619). MG2.
10 64 Directions for use MG2.1E Preparation Your remote control & Place the TV on a solid surface. For ventilation, leave at least 5 cm free all around the TV. To prevent any unsafe situations, do not place any objects on top of the TV. é Insert the aerial plug tightly into the aerial socket x at the back of the TV. Installation p. 4 U h B switch to standby p. 8 NEXTVIEW/TXT volume up/down p. 8 V sound mute p. 8 ¬ programme selection p. 8 P incredible surround on/off p.
In the Automatic Installation menu select Start and press the OK key to activate the searching. All TV channels are searched for and stored automatically. B Automatic Installation Ò ® ‡ f b æ w Select the INSTALLATION MENU : π † OK • Press U and h at the same time.
66 Give name INSTALLATION Automatic Installation Manual Installation J Give Name Reshuffle Favourite Programmes & Select Give Name in the INSTALLATION menu and press the OK key. é Select the programme number. SETUP “ Press the OK key. ‘ Select the character with the cursor up/down. § Select the following character. EXT1 EXT2 FRONT J 0 1 BBC1 2 BBC2 3 .... 4 .... 5 .... è Press the OK key when finished. ! Press the red ® key to return to the INSTALLATION menu.
NEXTVIEW/TXT Prog. guide on/off see p. 13 Q X M a INSTANT ® DNR SMART S q b 0 0 i ◊ 6 3 9 5 4 OK P b π † h 8 2 ¬ 1 w ‡ f Ò U 7 V æ ® B Teletext on/off see p. 16. 0 Previous programme The previously selected TV channel is displayed. The ◊ indication has a video recorder/DVD function. 0/9 Digit keys To select a TV channel. For a two digit programme number, enter the second digit within 2 seconds.
68 picture menu features menu sound menu Use of the menus features menu U f h b w OK key to activate b w & Press the yellow colour key to display/cancel the FEATURES menu. cursor to select adjustments ‘ Press the same colour key again to return or to switch menu off. OK P ¬ 2 3 4 5 6 7 8 9 1 2 If a NTSC peripheral is connected to EXTERNAL 2, the option Hue also appears. 4 5 7 8 i 0 Sharpness You can adjust the Sharpness for each TV channel separately.
‡ f π † b h b æ w Today, most broadcasters in Europe, are offering teletext pages containing their programme schedule of today. These pages can be requested by switching the TV to Teletext Programme Guide. & Press the b key to switch on Dual Screen. The TV screen is divided into 2 parts: - the left side for the normal main picture, - the right side for teletext broadcast by the selected TV channel.
70 Basic functions Use of the Teletext Programme Guide / NEXTVIEW menus B æ U f selection h b æ w cursor to select adjustments OK ¬ P é Use the cursor in the up/down, left/right direction to select the date, CHANNEL for the channel guide, THEME for the theme guide, OVERVIEW for an overview of all the programmes which are marked as reminders or for recording, the programme guide page number or to enter the programme list. ‘ Press the cursor left/right to run through the subpages.
U f h b æ w Teletext colour keys to select Most TV channels broadcast information via teletext. Each channel which broadcasts teletext transmits a page with information on how to use its teletext system. Look for the teletext page with the main index (usually p. 100). b OK P ¬ 1 2 4 5 7 8 i X 6 9 ◊ 0 0 S b M a DNR q U Ò ‡ U f ® Only for T.O.P. teletext broadcasts : T.O.P. orders the pages in categories and adds other possibilities of enhancing ease of use.
72 Connect Peripheral Equipment B Ò ‡ U f ® π † h b æ w OK V 4 5 7 8 • 3 There is a wide range of audio and video equipment that can be connected to your TV. The following connection diagrams show you how to connect it. Hold Press S to stop the page counter from seeking when you have entered a wrong page number or when the page is not available. Enter another page number. Not possible when in dual screen teletext mode.
AUD S• IO VIDEO VIDEO • 1 2 3 To select connected equipment Connect your camera or camcorder at the right side of your TV. Connect the equipment to VIDEO 2 and AUDIO L 3 for mono equipment. Press the X key repeatedly to select the sound coming from one or both loudspeakers of your TV. For stereo equipment also connect AUDIO R 3 . S-VHS quality with a S-VHS camcorder is obtained by connecting the S-VHS cables with the S-VIDEO input 1 and AUDIO inputs 3.
74 Record with your video recorder without EasyLink Satellite receiver B Ò ‡ U f ® π † h b æ OK V P ¬ 1 2 3 4 5 6 7 8 i 0 0 S b X ® Ò ‡ π † M • • Select the programme number on your video recorder. Set your video recorder to record. (See the handbook for your video recorder.) Keep the MODE key on the left side of the remote control pressed and simultaneously press: Switching programme numbers on your TV does not disturb recording ! æ to switch the SAT menu on or off 2.
11 List of Abbreviations 16:9-ARFRONT AGC AM-SOUND AUDIO-C AUDIO-L AUDIO-L-PROC AUDIO-R AUDIO-R-PROC AUDIO-SL AUDIO-SR AUDIO-SW AUX-SUPPLY BC-PROT B-SC1-IN B-SC2-IN B-TXT BG C/16/9 CENTER C-7-OUT CRT CVBS CVBS-PIP-DS CVBS-SC1-IN CVBS-SC2 OUT CVBS-SC2-IN CVBS-SC3-IN CVBS-TER CVBS-TXT-DS-OUT CVBS-TXT-OUT CVBS-Y-FRONT DAC-HOP DC-PROT DETECT DST DYN-FASE-COR EHT-INFO EW-DRIVE FBCSO FBL-SC1-IN FBL-SC2-IN FILAMENT FLASH FRAME ROTATION FRAME-ROT + FRONT-C FRONT-DETECT FRONT-Y_CVBS GHOST-IN G-SC1-IN G-SC2-IN G-TXT
76 MG2.1E SNDS-VR-OUT SOUND LHEADPHONE-OUT SOUND RHEADPHONE-OUT SOUND-ENABLE SSP STANDBY STATUS1/2/3 STBY SW U-DEC U-FEAT U-OUT V-DEC VD VDEFL-2 VDEFL-1 VDNEG VDPOS V-FEAT VFB V-OUT VA VD VREG Y_CVBS-SC2-IN Y-DEC Y-FEAT Y-out 11 List of Abbreviations Surround sound right variable level out Sound left headphone out Sound right headphone out Sound enable Small Signal Panel Standby Status signal from Euro-connector 1 or 2 or 3 to the µP, signal (1.29-3.31V is 16:9 signal, 3.32-5.
12 Spare parts list Large Signal Panel [A1] [A2] [A3] [A4] [E] 2450∆ 2454 2457 2460 2461 Various 2462 2463 2465 4822 310 11234 Supply repair kit 2466 4822 310 11235 Standby supply 2480 repair kit 2481 4822 310 11236 Line repair kit 2482 0125 4822 695 00005 Insulating plate 2484∆ 0050 4822 492 70789 Spring fix transistor 2487∆ 0057 4822 492 63524 Spring fix transistor 2504∆ 0059∆ 4822 492 62076 Spring fix transistor 2505∆ 0060 4822 492 70871 Spring fix transistor 2506∆ 0149∆ 4822 265 11253 Holder for fuse 2
78 5422 5423 5425 5430∆ 5460 5462 5466 5468 5480 5525∆ 5542 5544 5545 5550∆ 5567 5573 5617 MG2.1E 4822 157 71829 4822 157 71097 4822 157 11411 4822 140 10559 4822 157 71466 4822 157 71466 4822 157 71452 4822 157 71452 4822 157 63253 4822 157 50963 4822 157 11411 4822 157 11771 4822 157 11411 4822 146 11067 4822 157 11411 4822 157 71453 4822 157 11771 Bridge coil 0.56µH Bead 100MHz L.O.T.
12 Spare parts list 2008 2009 2010 2011 2012 2013 2014 2015 2016 2017 2018∆ 2019 2020 2021 2022 2023 2024 2025 2026 2027 2028 2029∆ 2030∆ 2031 2032 2037 2038 2039 2040∆ 2042 2043 2044 2045 2046 2047 2101∆ 2102 2103∆ 2104∆ 2105∆ 2106 2107 2108 2109 2110 2111 2112 2116 2117 2118 2119 2120 2121 2125∆ 2202 2203 2204 2205∆ 2206 2209 2210 2212∆ 2213 2215 2216 2217 2219 2220 2221 2222 2228 2229 2300∆ 2301∆ 2302∆ 2303 2304 2307 2308 2311∆ 2312 2313 2315 2321 2322 2323 2331 2340 2343 2344 2351 2403 2404 2405 2406 24
80 3409 3420 3422 3423∆ 3425 3426 3427 3428 3429 3430 3439 3440 3441 3521 3529 3530 3531 3532∆ 3538∆ 3545 3546 3565 3566 3567∆ 3568∆ 3569 3570 3573∆ 3574∆ 3602 3603 3605 3606 3607 3608 3609 3610 3611 3612 3613 3614 3615 3616 3617 3618 3619 3620 3621 3623 3625 3626 3628 3629 3630∆ 3631∆ 3632 3633 3634 3635 3636 3637 3639 3640 3641 3644 3645 3646∆ 3647 3648 3649 3650 3651 3652 3653 3654 3655 3657 3659 3751 3752 3753 3754 3755 3756 3758 3760 3761 3765 3766 3767 3768 3769∆ 3770∆ 3771 3772 3773∆ 3776 3777 3778 3
