Page 2 - LEAKAGE TEST; COMPONENTS IDENTIFIED BY SHADING AND MARK; Earth Ground
MCM 21T1 – 2 – LEAKAGE TEST The AC leakage from any exposed metal part to earth ground and from all exposed metal parts to any exposed metal part hav- i n g a r e t u r n t o c h a s s i s , m u s t n o t e x c e e d 0 . 5 m A ( 5 0 0 microampers). Leakage current can be measured by any one of three...
Page 3 - POWER SAVING FUNCTION; Reliability Check Mode; DIAGNOSIS; Screen
MCM 21T1 – 3 – POWER SAVING FUNCTION Failre +B failure Horizontal / Vertical Deflectionfailure, Thermal protector ABL protector HV failure Aging / Self Test Power LED Orange → Off (0.5 sec) (0.5 sec) Orange → Off (1.5 sec) (0.5 sec) Orange → Off (0.5 sec) (1.5 sec) Orange → Off → Orange → Off (0.25 ...
Page 4 - TIMING SPECIFICATION
MCM 21T1 – 4 – TIMING SPECIFICATION MODE AT PRODUCTION MODE 1 MODE 2 MODE 3 MODE FOR CUSTOMER VGA E-VGA VGA VESA VESA SNI-100Hz VESA VESA SNI-100Hz MGA RESOLUTION 720 X 400 720 X 400 640 X 480 640 X 480 640 X 480 640 X 480 800 X 600 800 X 600 800 X 600 800 X 600 CLOCK 28.325 MHz 36.082 MHz 25.175 MH...
Page 5 - properly as a result.; TABLE OF CONTENTS; Section; SAFETY RELATED ADJUSTMENT; Schematic Diagrams and Printed Wiring; ELECTRICAL PARTS LIST
MCM 21T1 – 5 – Note: Hand degauss must be used on stand-by or power-off condition. This model has an automatic earth magnetism correction function by using an earth magnetism sensor and a LCC coil. When using a hand degauss while monitor (LCC coil) is being operated, it sometimes gets magnetized, an...
Page 18 - Three screws
MCM 21T1 2-3. G BOARD REMOVAL 2-4. A BOARD REMOVAL 2-2 Open the G block in the directionof the arrow . and remove ofthe arrow . Two screws (+ BVTT 4 x 8) Three hooks Two screws (+BVTP 3 x 10) G shield G board B A Two printed circuit board holders A B 1 7 Screw (+ BVTT 4 x 8) 3 2 4 5 6 A board (1/2) ...
Page 23 - Landing Rough Adjustment
MCM 21T1 SECTION 4 ADJUSTMENTS • Landing Rough Adjustment 1. Enter the full white signal. (or the full black dots signal).2. Adjust the contrast to the maximum.3. Make the screen monogreen.Note: Off the outputs from R ch and B ch of SG.4. Reverse the DY, and adjust coarsely the purity magnet so that...
Page 24 - Convergence Rough Adjustment; (2) Place the protrusions of the 6-fold poles magnet attached to; Protrusions; * Set so that the protruding parts of; White Balance Adjustment Specification; Convergence Specification; MODE; FBT
MCM 21T1 Connect the communication cable of the computer to the connector located on the D board on the monitor. Run the service softwareand then follow the instruction. IBM AT Computer as a Jig 1-690-391-21 1 A-1500-819-AInterface Unit 2 *The parts above ( ) are necessary for DAS adjustment. 1 3 D-...
Page 26 - GA
5-4 5-5 5-6 1 2 8 4 3 1 6 2 4 3 1 2 3 4 5 6 7 8 5 4 3 2 1 11 9 8 6 4 3 2 1 J ROTATION(-) ROTATION(+) CN509 - + V.S2 +15V IC701 CURRENT AMP 9 13 11 1 8 12 10 2 IC013 VS1 CS1 VS2 CS2 DMP CLK DMP DO DMP DI DMP ID 39 38 46 7 45 9 11 10 12 6 41 43 42 44 33 IC007 CLP OUT CBLK OUT SONG VIDEO INPUT_SEL CLK ...
Page 27 - WIRING BOARDS; Terminal name of semiconductors in silk screen; CONNECTOR PANEL; C BLOCK
Note: The components identified by shading and mark ! are critical for safety. Replace only with part number specified. 5-7 5-8 5-9 5-4. SCHEMATIC DIAGRAMS AND PRINTED WIRING BOARDS 5-3. CIRCUIT BOARDS LOCATION HV RegulatorCircuit Check HV ProtectorCircuit Check Beam CurrentProtector CircuitCheck Pa...
Page 28 - CRYSTAL; • D BOARD SEMICONDUCTOR LOCATION; DIODE
D513 E–1 3 D514 A–4 A–1 – D516 D–2 3 D517 D–2 3 D518 A–3 3 D519 B–4 B–1 – D520 B–3 B–2 – D521 B–3 3 D660 D–2 3 D701 D–4 3 D704 D–5 3 D705 D–1 3 D706 E–4 3 D709 E–4 E–1 – D713 C–1 C–4 – D714 C–1 C–4 – D715 C–1 C–4 – D718 D–4 3 D720 C–2 C–3 – D721 D–1 D–4 – D901 C–3 3 D902 A–2 3 D903 A–2 A–2 – D904 A–...
Page 30 - JL; boards
5-17 5-18 5-19 5-20 (2) Schematic Diagrams of G, GA, H, J and L Boards • GA BOARD VOLTAGE LIST Ref. Pin No. Voltage [V] IC7501 1 2.6 2 2.5 3 1.7 4 0.2 5 0 7 8.6 Q7501 B 14.0 C 0 E 14.0 Q7502 B 0.7 C 0.1 Q7503 B 0 C 14.0 Q7504 B 13.4 Schematic diagram Ò D D D D D board Schematic diagrams G G G G G (g...
Page 31 - POWER SUPPLY; POWER SENSOR; — G BOARD —
* 1 3 Ref. Q615, Q680, Q691 D614, D617, D640,D666, D680, D681,D693 5-21 5-22 5-23 Schematic diagram A A A A A board l G POWER SUPPLY H USER CONTROL (ga) POWER SENSOR — G BOARD — — H BOARD — L V.STAT, H.STAT, LLC,GEO MAGNETIC SENSOR — L BOARD (Conductor Side) — — L BOARD (Component Side) — — GA BOARD...
Page 32 - BLOCK; PICTURE; • A BOARD VOLTAGE LIST; • A BOARD WAVEFORMS
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 A B C D E F G H I J A B C D E F G H I J +5V +5V +12V +200V +80V +200V 1 2 4 3 5 6 8 9 7 1 2 3 4 5 6 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 1 2 3 4 5 6 7 1 2 3 4 5 6 7 8 9 10 11 12 ...
Page 33 - • A BOARD; : Refer to Terminal name of; IC
Component ( ) Side Conductor ( ) Side 5-27 5-28 — A BOARD (Conductor Side) — 1 2 3 A B C D — A BOARD (Component Side) — 1 2 3 A B C D A VIDEO AMPRGB OUT • A BOARD SEMICONDUCTORLOCATION Component ( ) Side Conductor ( ) Side * : Refer to Terminal name of semiconductors in silk screen printed circuit (...
Page 36 - DESCRIPTION; are critical for safety.
MCM 21T1 6-1 • Items marked " * " are not stocked since t h e y a r e s e l d o m r e q u i r e d f o r r o u t i n e s e r v i c e . S o m e d e l a y s h o u l d b e anticipated when ordering these items. • I t e m s w i t h n o p a r t n u m b e r a n d n o description are not stocked bec...
Page 39 - MEMO
Page 40 - SECTION 7; • All variable and adjustable resistors have
REF.NO. PART NO. DESCRIPTION REMARK REF.NO. PART NO. DESCRIPTION REMARK The components identified by shading and mark ¡ are critical for safety. Replace only with part number specified. MCM 21T1 7-1 NOTE: The components identified by shading and mark ¡ are critical for safety. Replace only with part...
Page 55 - English; Printed in Japan
REF.NO. PART NO. DESCRIPTION REMARK REF.NO. PART NO. DESCRIPTION REMARK The components identified by shading and mark ¡ are critical for safety. Replace only with part number specified. MCM 21T1 7-16 R5003 1-216-295-91 SHORT 0 R5005 1-216-689-11 RES,CHIP 39K 5% 1/10W R5006 1-216-073-00 RES,CHIP 10K ...