User manual TECHNICS SE-A800S service manual

[. . . ] ON THE SCHEMATIC DIAGRAMS AND IN THE PARTS LIST ARE CRITICAL TO SAFE OPERATION. REPLACE THESE COMPONENTS WITH TECHNICS PARTS WHOSE PART NUMBERS APPEAR AS SHOWN IN THIS MANUAL OR IN SUPPLEMENTS PUBLISHED BY TECHNICS. --2-- SE-A800S SECTION 1 GENERAL LOCATION AND FUNCTION OF CONTROLS <FRONT> 1 23 4 · IC201 µPD78044FGF-064-3B9 Pin No. 1 2 3 4 5 6 7 8 9 10 11 12 13 Pin Name DIG7 DIG6 DIG5 DIG4 DIG3 DIG2 DIG1 +5V S. [. . . ] 1 2 3 4 5 6 7 8 9 10 11 12 13 Pin Name DIG7 DIG6 DIG5 DIG4 DIG3 DIG2 DIG1 +5V S. CE (LV100) REAR-RY BRIDGE CABLE PROTECT RESET AUTO-STOP STEREO-IN AVss SP-RY SURR-RY POWER-RY NOT USED SIGNAL A/D3 A/D2 A/D1 AVDD AV. MUTE SECTION 2 EXPLANATION OF IC TERMINALS I/O O O O O O O O -- I I I O O -- -- I I I I -- O -- O -- I I I I -- -- -- -- -- I O O -- -- -- O Power supply (+5V). 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 Pin Name VOLUME UP VOLUME DOWN STANDBY SYS. MUTE SL MUTE VERSION K14 K13 K12 K11 SR MUTE S15 S14 S13 S12 S11 S10 S9 S8 S7 VLOAD S6 S5 S4 S3 S2 S1 DIG10 DIG9 DIG8 I/O O O -- I I I I -- I I -- -- -- O -- I I I I I -- O O O O O O O O O -- O O O O O O O O O Fluorescent indicator tube drive. CIRCUIT BOARDS LOCATION POWER board AC SWITCH board MAIN board !!£ !¡ 9 @º !ª !· !¶ !§ !¢ !TM !º 8765 14 15 16 17 18 SW board SW (A) board DISPLAY board SW (B) board 1 POWER switch 2 CENTER LEVEL +, ­ buttons 3 REAR LEVEL +, ­ buttons 4 MASTER VOLUME control 5 BALANCE control 6 TREBLE control 7 BASS control 8 BASS BOOST button/indicator 9 TAPE/MD button 0 PHONO button !¡ TV/LD button !TM TUNER button !£ VIDEO button !¢ CD button !DIRECT button !§ SHIFT button !¶ Numeric buttons !· Tuner control buttons !ª PHONES jack @º SPEAKERS (A/B) buttons 19 20 21 22 23 24 25 26 27 28 29 30 31 KEY board VOLUME board Key out Fluorescent indicator tube drive. VR -TONE board <REAR> 9 32 33 34 35 36 37 38 39 40 Key out Fluorescent indicator tube drive. 7 8 654 3 2 1 1 AC power cord 2 FRONT SPEAKERS (A/B) 3 VIDEO 4 TV/LD 5 TAPE/MD 6 CD 7 PHONO 8 ANTENNA (FM/AM) 9 SIGNAL GND --3-- --4-- --5-- --6-- SECTION 4 EXPLODED VIEWS NOTE: · -XX, -X mean standardized parts, so they may have some differences from the original one. 1-126-965-11 1-126-967-11 1-126-967-11 1-126-925-11 1-126-963-11 1-102-973-00 1-126-933-11 1-102-233-00 1-126-967-11 1-137-372-11 1-162-286-21 1-164-159-21 1-104-664-11 1-104-664-11 1-128-506-11 1-128-506-11 1-130-781-00 1-130-781-00 1-126-960-11 1-104-664-11 1-104-664-11 1-126-960-11 1-126-942-61 1-126-942-61 1-101-001-00 1-101-001-00 1-126-960-11 1-126-942-61 1-164-097-11 1-126-960-11 1-124-464-11 1-126-964-11 1-164-159-21 1-162-282-31 1-162-282-31 1-162-282-31 1-162-282-31 1-162-282-31 1-162-282-31 1-162-282-31 1-164-096-11 1-164-096-11 1-162-282-31 1-162-282-31 1-162-282-31 1-162-282-31 1-162-282-31 1-162-282-31 1-162-282-31 1-164-096-11 Description ELECT ELECT ELECT ELECT ELECT CERAMIC ELECT CERAMIC ELECT FILM CERAMIC CERAMIC ELECT ELECT ELECT ELECT FILM FILM ELECT ELECT ELECT ELECT ELECT ELECT CERAMIC CERAMIC ELECT ELECT CERAMIC ELECT ELECT ELECT CERAMIC CERAMIC CERAMIC CERAMIC CERAMIC CERAMIC CERAMIC CERAMIC CERAMIC CERAMIC CERAMIC CERAMIC CERAMIC CERAMIC CERAMIC CERAMIC CERAMIC CERAMIC 22uF 47uF 47uF 470uF 4. 7uF 100PF 100uF 33PF 47uF 0. 022uF 220PF 0. 1uF 47uF 47uF 6800uF 6800uF 0. 22uF 0. 22uF 1uF 47uF 47uF 1uF 1000uF 1000uF 0. 001uF 0. 001uF 1uF 1000uF 0. 022uF 1uF 0. 22uF 10uF 0. 1uF 100PF 100PF 100PF 100PF 100PF 100PF 100PF 0. 01uF 0. 01uF 100PF 100PF 100PF 100PF 100PF 100PF 100PF 0. 01uF 0. 01uF 20% 20% 20% 20% 20% 5% 20% 10% 20% 5% 10% 20% 20% 20% 20% 10% 10% 20% 20% 20% 20% 20% 20% Remarks 50V 50V 50V 10V 50V 50V 10V 500V 16V 50V 50V 50V 25V 25V 50V 50V 100V 100V 50V 25V 25V 50V 25V 25V 50V 50V 50V 25V 50V 50V 50V 50V 50V 50V 50V 50V 50V 50V 50V 50V 50V 50V 50V 50V 50V 50V 50V 50V 50V 50V 50V Ref. Description < DIODE > D710 D721 D722 D723 D724 D801 D802 D804 D820 D821 D822 D823 D824 D825 D901 8-719-815-85 8-719-815-85 8-719-815-85 8-719-815-85 8-719-815-85 8-719-002-33 8-719-302-38 8-719-010-38 8-719-200-82 8-719-200-82 8-719-200-82 8-719-200-82 8-719-815-85 8-719-815-85 8-719-815-85 DIODE DIODE DIODE DIODE DIODE DIODE DIODE DIODE DIODE DIODE DIODE DIODE DIODE DIODE DIODE 1S1585 1S1585 1S1585 1S1585 1S1585 UZL-24L RBV-602-01 UZ-5. 1BSB 11ES2 11ES2 11ES2 11ES2 1S1585 1S1585 1S1585 Remarks < TERMINAL > * G200 * G201 * G202 1-537-738-21 TERMINAL, EARTH 1-537-738-21 TERMINAL, EARTH 1-537-738-21 TERMINAL, EARTH < IC > IC1 IC401 IC402 IC403 IC701 IC801 IC802 IC950 8-759-450-86 8-759-805-14 8-759-636-74 8-759-636-74 8-759-326-52 IC IC IC IC IC BU1922 LC7822 M5218AP-22 M5218AP-22 uPC2581V 20% 20% 20% 20% 20% 10% 10% 10% 10% 10% 10% 10% 8-759-391-87 IC BA78M12P 8-759-700-69 IC NJM79L12A 8-759-333-83 IC NJM2103D < JACK > J401 J402 J403 1-770-614-11 JACK, PIN 4P (PHONO/CD) 1-580-825-11 JACK, PIN 6P (CD/TAPE/MD) 1-770-614-11 JACK, PIN 4P (VIDEO) < COIL > L1 L701 L751 1-410-521-11 INDUCTOR 100uH 1-420-872-00 COIL, AIR-CORE 1-420-872-00 COIL, AIR-CORE < TRANSISTOR > 10% 10% 10% 10% 10% 10% 10% Q303 Q304 Q701 Q702 Q703 Q704 Q710 Q720 Q721 Q722 Q723 Q751 Q752 Q753 Q754 8-729-922-37 8-729-922-37 8-729-119-76 8-729-141-30 8-749-010-25 8-749-010-26 8-729-119-78 8-729-140-82 8-729-140-82 8-729-140-84 8-729-119-78 8-729-119-76 8-729-141-30 8-749-010-25 8-749-010-26 TRANSISTOR 2SD2144S TRANSISTOR 2SD2144S TRANSISTOR 2SA1175-HFE TRANSISTOR 2SC3623A-LK IC MN2488-OPY-M IC MP1620-OPY-M TRANSISTOR 2SC403SP-51 TRANSISTOR 2SA988-PAFAEA TRANSISTOR 2SA988-PAFAEA TRANSISTOR 2SC1841-PAFAEA TRANSISTOR 2SC403SP-51 TRANSISTOR 2SA1175-HFE TRANSISTOR 2SC3623A-LK IC MN2488-OPY-M IC MP1620-OPY-M 1-164-096-11 CERAMIC < CONNECTOR > CNP404 1-569-060-11 SOCKET, CONNECTOR 11P CNP702 1-770-481-11 PIN, CONNECTOR 4P CNS204 1-569-324-11 SOCKET, CONNECTOR 21P -- 27 -- MAIN Ref. 1-249-439-11 1-249-421-11 1-249-437-11 1-249-414-11 1-249-409-11 Description CARBON CARBON CARBON CARBON CARBON 68K 2. 2K 47K 560 220 5% 5% 5% 5% 5% Remarks 1/4W 1/4W F 1/4W 1/4W F 1/4W F 8-729-140-82 TRANSISTOR 2SA988-PAFAEA 8-729-140-97 TRANSISTOR 2SB734-34 8-729-030-18 TRANSISTOR 2SD2525 < RESISTOR > R5 R6 R7 !R299 1-249-421-11 1-247-807-31 1-247-807-31 1-249-381-11 1-249-381-11 CARBON CARBON CARBON CARBON CARBON 2. 2K 100 100 1 1 5% 5% 5% 5% 5% !R767 1-249-409-11 1-233-352-41 1-249-393-11 1-249-389-11 1-249-403-11 1-249-419-11 1-249-425-11 1-249-403-11 1-249-437-11 1-249-429-11 1-249-429-11 1-249-417-11 1-249-427-11 1-249-429-11 1-249-393-11 1-249-393-11 1-249-425-11 1-249-417-11 1-249-439-11 1-249-415-11 1-249-439-11 1-249-441-11 1-249-441-11 1-249-421-11 1-249-437-11 1-249-414-11 1-249-409-11 1-249-409-11 1-233-352-41 1-249-393-11 CARBON 220 5% ENCAPSULATED COMPONENT CARBON 10 5% CARBON 4. 7 5% CARBON 68 5% CARBON CARBON CARBON CARBON CARBON CARBON CARBON CARBON CARBON CARBON CARBON CARBON CARBON CARBON CARBON CARBON CARBON CARBON CARBON CARBON 1. 5K 4. 7K 68 47K 10K 10K 1K 6. 8K 10K 10 10 4. 7K 1K 68K 680 68K 100K 100K 2. 2K 47K 5% 5% 5% 5% 5% 5% 5% 5% 5% 5% 5% 5% 5% 5% 5% 5% 5% 5% 5% 5% 1/4W F 1/4W F 1/4W F 1/4W F 1/4W F 1/4W F 1/4W F 1/4W 1/4W 1/4W 1/4W F 1/4W F 1/4W 1/4W F 1/4W 1/4W 1/4W 1/4W 1/4W F F F F R304 R352 R353 R354 R401 R402 R403 R404 R405 R406 R407 R408 R409 R410 R411 R412 R413 R414 R416 R417 R418 R419 R420 R421 R435 R442 R443 R447 R448 R449 R451 R452 R453 R454 R455 R456 R457 R458 R459 R460 R461 R462 R463 R466 R467 R470 R471 R701 R702 R703 1-249-441-11 1-249-441-11 1-249-425-11 1-249-425-11 1-249-411-11 1-249-421-11 1-249-417-11 1-249-417-11 1-249-417-11 1-249-417-11 1-249-417-11 1-249-429-11 1-249-437-11 1-247-897-11 1-249-416-11 1-247-897-11 1-249-437-11 1-249-425-11 1-249-417-11 1-247-897-11 1-249-417-11 1-249-417-11 1-249-441-11 1-249-417-11 1-249-418-11 1-249-418-11 1-249-418-11 1-249-416-11 1-249-429-11 1-247-863-91 1-249-411-11 1-249-421-11 1-249-417-11 1-249-417-11 1-249-417-11 1-249-417-11 1-249-417-11 1-249-429-11 1-249-437-11 1-247-897-11 1-249-416-11 1-247-897-11 1-249-437-11 1-249-417-11 1-247-897-11 1-249-441-11 1-249-417-11 1-249-417-11 1-249-439-11 1-249-415-11 CARBON CARBON CARBON CARBON CARBON CARBON CARBON CARBON CARBON CARBON CARBON CARBON CARBON CARBON CARBON CARBON CARBON CARBON CARBON CARBON CARBON CARBON CARBON CARBON CARBON CARBON CARBON CARBON CARBON CARBON CARBON CARBON CARBON CARBON CARBON CARBON CARBON CARBON CARBON CARBON CARBON CARBON CARBON CARBON CARBON CARBON CARBON CARBON CARBON CARBON 100K 100K 4. 7K 4. 7K 330 2. 2K 1K 1K 1K 1K 1K 10K 47K 560K 820 560K 47K 4. 7K 1K 560K 1K 1K 100K 1K 1. 2K 1. 2K 1. 2K 820 10K 22K 330 2. 2K 1K 1K 1K 1K 1K 10K 47K 560K 820 560K 47K 1K 560K 100K 1K 1K 68K 680 5% 5% 5% 5% 5% 5% 5% 5% 5% 5% 5% 5% 5% 5% 5% 5% 5% 5% 5% 5% 5% 5% 5% 5% 5% 5% 5% 5% 5% 5% 5% 5% 5% 5% 5% 5% 5% 5% 5% 5% 5% 5% 5% 5% 5% 5% 5% 5% 5% 5% 1/4W 1/4W 1/4W F 1/4W F 1/4W 1/4W 1/4W 1/4W 1/4W 1/4W F F F F F 1/4W F 1/4W 1/4W 1/4W 1/4W F 1/4W 1/4W 1/4W F 1/4W F 1/4W 1/4W 1/4W 1/4W 1/4W 1/4W F F F F 1/4W 1/4W 1/4W 1/4W F 1/4W 1/4W F 1/4W F 1/4W F 1/4W F CARBON 560 5% CARBON 220 5% CARBON 220 5% ENCAPSULATED COMPONENT CARBON 10 5% 1/4W F 1/4W F 1/4W F 1/4W 1/4W 1/4W 1/4W 1/4W 1/4W 1/4W R768 R770 R771 R773 R801 R801 !R811 R821 R950 R951 R952 R953 R954 R955 R956 R957 R960 RR01 RR04 1-249-389-11 1-249-419-11 1-249-425-11 1-249-437-11 1-249-421-11 1-249-425-11 1-249-389-11 1-249-381-11 1-249-381-11 1-249-437-11 1-249-421-11 1-249-429-11 1-247-843-11 1-247-863-91 1-249-439-11 1-249-429-11 1-247-843-11 1-249-417-11 1-249-429-11 1-249-418-11 1-249-393-11 CARBON CARBON CARBON CARBON CARBON CARBON CARBON CARBON CARBON CARBON CARBON CARBON CARBON CARBON CARBON CARBON CARBON CARBON CARBON CARBON CARBON 4. 7 1. 5K 4. 7K 47K 2. 2K 4. 7K 4. 7 1 1 47K 2. 2K 10K 3. 3K 22K 68K 10K 3. 3K 1K 10K 1. 2K 10 5% 5% 5% 5% 5% 5% 5% 5% 5% 5% 5% 5% 5% 5% 5% 5% 5% 5% 5% 5% 5% 1/4W 1/4W 1/4W 1/4W 1/4W 1/4W 1/4W 1/4W 1/4W 1/4W 1/4W 1/4W 1/4W 1/4W 1/4W 1/4W F F F F F F F F F F F F F 1/4W F 1/4W F 1/4W 1/4W 1/4W 1/4W F 1/4W 1/4W 1/4W F 1/4W 1/4W 1/4W F 1/4W F 1/4W 1/4W F 1/4W 1/4W F 1/4W 1/4W F 1/4W F -- 28 -- The components identified by mark !1-249-393-11 1-249-418-11 1-249-393-11 1-249-393-11 Description CARBON CARBON CARBON CARBON < RELAY > RY701 1-515-921-11 RELAY (12V) < TERMINAL > TM1 TM701 POWER 10 1. 2K 10 10 5% 5% 5% 5% SW Remarks 1/4W 1/4W 1/4W 1/4W F F F F SW(A) Ref. * SW(B) VOLUME VR-TONE Remarks Part No. Description A-4392-800-A VR-TONE BOARD, COMPLETE ************************ VOLUME BOARD ************** < CAPACITOR > C420 C421 C422 C423 C424 C425 C426 C427 C428 C429 C430 C431 C432 C433 C470 C471 C472 C473 C474 C475 C476 C477 C478 C479 C492 1-162-207-31 1-137-440-11 1-124-463-00 1-137-368-11 1-137-372-11 1-126-096-11 1-126-096-11 1-124-252-00 1-130-489-00 1-102-973-00 1-126-301-11 1-126-301-11 1-126-096-11 1-126-096-11 1-162-207-31 1-137-440-11 1-124-463-00 1-137-368-11 1-137-372-11 1-126-096-11 1-126-096-11 1-124-252-00 1-130-489-00 1-102-973-00 1-124-464-11 CERAMIC FILM ELECT FILM FILM ELECT ELECT ELECT MYLAR CERAMIC ELECT ELECT ELECT ELECT CERAMIC FILM ELECT FILM FILM ELECT ELECT ELECT MYLAR CERAMIC ELECT < CONNECTOR > CNP202 1-770-391-11 PIN, CONNECTOR (PC BOARD) 7P CNS403 1-569-060-11 SOCKET, CONNECTOR 11P < DIODE > D238 D421 8-719-313-50 DIODE SEL6810A-TH12 8-719-815-85 DIODE 1S1585 < IC > IC404 8-759-636-74 IC M5218AP-22 < TRANSISTOR > Q401 Q402 Q451 Q452 8-729-202-67 8-729-922-37 8-729-202-67 8-729-922-37 TRANSISTOR TRANSISTOR TRANSISTOR TRANSISTOR < RESISTOR > 2SK246-GR3 2SD2144S 2SK246-GR3 2SD2144S 22PF 0. 018uF 0. 1uF 0. 0047uF 0. 022uF 10uF 10uF 0. 33uF 0. 033uF 100PF 1uF 1uF 10uF 10uF 22PF 0. 018uF 0. 1uF 0. 0047uF 0. 022uF 10uF 10uF 0. 33uF 0. 033uF 100PF 0. 22uF 5% 5% 20% 5% 5% 20% 20% 20% 5% 5% 20% 20% 20% 20% 5% 5% 20% 5% 5% 20% 20% 20% 5% 5% 20% 50V 50V 50V 50V 50V 35V 35V 50V 50V 50V 50V 50V 35V 35V 50V 50V 50V 50V 50V 35V 35V 50V 50V 50V 50V 1-694-266-11 TERMINAL BOARD, ANT 1-537-376-11 TERMINAL BOARD (SPEAKER) < TUNER > TU001 TU001 1-233-594-11 ENCAPSULATED COMPONENT (AEP, G) 1-233-595-11 ENCAPSULATED COMPONENT (EE) < VIBRATOR > X1 1-579-900-21 VIBRATOR, CRYSTAL 4. 33MHz ************************************************************ * 1-665-264-11 POWER BOARD ************* 1-533-399-31 HOLDER, FUSE < CONNECTOR > CNP801 1-764-478-11 PIN, CONNECTOR (PC BOARD) 9P CNP901 1-564-321-00 PIN, CONNECTOR 2P < FUSE > ! [. . . ] 1-249-393-11 1-249-418-11 1-249-393-11 1-249-393-11 Description CARBON CARBON CARBON CARBON < RELAY > RY701 1-515-921-11 RELAY (12V) < TERMINAL > TM1 TM701 POWER 10 1. 2K 10 10 5% 5% 5% 5% SW Remarks 1/4W 1/4W 1/4W 1/4W F F F F SW(A) Ref. * SW(B) VOLUME VR-TONE Remarks Part No. Description A-4392-800-A VR-TONE BOARD, COMPLETE ************************ VOLUME BOARD ************** < CAPACITOR > C420 C421 C422 C423 C424 C425 C426 C427 C428 C429 C430 C431 C432 C433 C470 C471 C472 C473 C474 C475 C476 C477 C478 C479 C492 1-162-207-31 1-137-440-11 1-124-463-00 1-137-368-11 1-137-372-11 1-126-096-11 1-126-096-11 1-124-252-00 1-130-489-00 1-102-973-00 1-126-301-11 1-126-301-11 1-126-096-11 1-126-096-11 1-162-207-31 1-137-440-11 1-124-463-00 1-137-368-11 1-137-372-11 1-126-096-11 1-126-096-11 1-124-252-00 1-130-489-00 1-102-973-00 1-124-464-11 CERAMIC FILM ELECT FILM FILM ELECT ELECT ELECT MYLAR CERAMIC ELECT ELECT ELECT ELECT CERAMIC FILM ELECT FILM FILM ELECT ELECT ELECT MYLAR CERAMIC ELECT < CONNECTOR > CNP202 1-770-391-11 PIN, CONNECTOR (PC BOARD) 7P CNS403 1-569-060-11 SOCKET, CONNECTOR 11P < DIODE > D238 D421 8-719-313-50 DIODE SEL6810A-TH12 8-719-815-85 DIODE 1S1585 < IC > IC404 8-759-636-74 IC M5218AP-22 < TRANSISTOR > Q401 Q402 Q451 Q452 8-729-202-67 8-729-922-37 8-729-202-67 8-729-922-37 TRANSISTOR TRANSISTOR TRANSISTOR TRANSISTOR < RESISTOR > 2SK246-GR3 2SD2144S 2SK246-GR3 2SD2144S 22PF 0. 018uF 0. 1uF 0. 0047uF 0. 022uF 10uF 10uF 0. 33uF 0. 033uF 100PF 1uF 1uF 10uF 10uF 22PF 0. 018uF 0. 1uF 0. 0047uF 0. 022uF 10uF 10uF 0. 33uF 0. 033uF 100PF 0. 22uF 5% 5% 20% 5% 5% 20% 20% 20% 5% 5% 20% 20% 20% 20% 5% 5% 20% 5% 5% 20% 20% 20% 5% 5% 20% 50V 50V 50V 50V 50V 35V 35V 50V 50V 50V 50V 50V 35V 35V 50V 50V 50V 50V 50V 35V 35V 50V 50V 50V 50V 1-694-266-11 TERMINAL BOARD, ANT 1-537-376-11 TERMINAL BOARD (SPEAKER) < TUNER > TU001 TU001 1-233-594-11 ENCAPSULATED COMPONENT (AEP, G) 1-233-595-11 ENCAPSULATED COMPONENT (EE) < VIBRATOR > X1 1-579-900-21 VIBRATOR, CRYSTAL 4. 33MHz ************************************************************ * 1-665-264-11 POWER BOARD ************* 1-533-399-31 HOLDER, FUSE < CONNECTOR > CNP801 1-764-478-11 PIN, CONNECTOR (PC BOARD) 9P CNP901 1-564-321-00 PIN, CONNECTOR 2P < FUSE > !T901 1-431-257-11 TRANSFORMER, POWER ************************************************************ * A-4392-801-A SW BOARD, COMPLETE ******************** SW (A) BOARD ************ SW (B) BOARD ************ < CONNECTOR > CNP703 1-764-474-11 PIN, CONNECTOR (PC BOARD) 5P CNP704 1-764-473-11 PIN, CONNECTOR (PC BOARD) 3P CNS702 1-770-482-11 CONNECTOR, BOARD TO BOARD 4P < JACK > J741 1-750-733-11 JACK (LARGE TYPE)(PHONES) < RESISTOR > R741 R742 R791 R792 1-260-100-11 1-260-100-11 1-260-100-11 1-260-100-11 CARBON CARBON CARBON CARBON < SWITCH > S701 1-762-320-11 SWITCH, PUSH (2 KEY) (SPEAKERS) ************************************************************ 1. 2K 1. 2K 1. 2K 1. 2K 5% 5% 5% 5% 1/2W 1/2W 1/2W 1/2W R420 R421 R422 R423 R424 1-249-415-11 1-249-431-11 1-249-422-11 1-247-903-00 1-247-903-00 CARBON CARBON CARBON CARBON CARBON 680 15K 2. 7K 1M 1M 5% 5% 5% 5% 5% 1/4W F 1/4W 1/4W F 1/4W 1/4W -- 29 -- The components identified by mark ! [. . . ]