1 Precautions Follow these safety, servicing and ESD precautions to prevent damage and to protect against potential hazards such as electrical shock. 1-1 Safety Precautions 1-1-1 Warnings For continued safety, do not attempt to modify the (READING SHOULD circuit board. NOT BE ABOVE 0.5mA) Disconnect the AC power and DC Power Jack before servicing.
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1 Precautions 1-2 Servicing Precautions WARNING: An electrolytic capacitor installed with the wrong polarity might explode. Caution: Before servicing units covered by this service manual, read and follow the Safety Precautions section of this manual. Note: If unforeseen circumstances create conflict between the following servicing precautions and any of the safety precautions, always follow the safety precautions.
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2 Product Specifications 2-2 Pin Assignments Sync 15 Pin signal cable connector Type Separate H/V Composite H/V Pin No. Green Green Blue Blue GND (DDC Return) GND (DDC Return) GND-Red GND-Red GND-Green GND-Green GND-Blue GND-Blue No Connection No Connection GND-Sync/Self Test GND-Sync/Self Test DDC Data DDC Data...
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2 Product Specifications 2-3 Timing Chart The timing no. is standardizde by Samsung to apply the same signal to all monitors manufactured by Sam sung 2-3-1 LCD Panel Mode : 1 mode N/I : Non-Interlaced, I : Interlaced ❇ Table 2-1 Timing Chart...
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2 Product Specifications 2-3-2 Supported Modes (1) Any timing modes that can be formed within the operating horizontal and vertical frquency range. Table 2-2 Timing Chart 192MP...
3 Disassembly and Reassembly This section of the service manual describes the disassembly and reassembly procedures for the 192MP monitor. WARNING: This monitor contains electrostatically sensitive devices. Use caution when handling these components. 3-1 Disassembly Cautions:1. Disconnect the monitor from the power source before disassembly. 2.
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3 Disassembly and Reassembly 6. Remove 4 screws form the shield and lift up the shield. 3-2 Replacement Order of Lamp Assemblies Note : Lamp connot be replaced for new CMO 19” panel. Reason : Other panels may be replaced by removing screws on side. However, CMO lamp replacement requires glass removal and molded parts, which can cause unexpected difficulties for service technician.
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4 Alignments and Adjustments This section describes to adjust LCD monitor after replacing EEPROM, Main PBA or Panel. 4-1 DDC jig installation Monitor (need to adjust) Parallel Cable (25Pin) MTI-2031 PC system DDC Manager (to input DDC data) Signal Cable * Please use DVI cable connection adapter for DVI input.
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4 Alignments and Adjustments 2. Click “Sys Config” Select “Station : Write station”. Check “Serial No and Week : Don’t change” Click “Save” 3. Click “Open” icon. Select “Connected Port #1” and Next “OK”. * File Name - 192MPA.DDC : Analog 192MPD.DDC”...
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4 Alignments and Adjustments 4-3 Factory Mode Adjustments 4-3-1 Factory Mode Admission - Remote Controller : Power off -> Mute -> 1, 8, 2 -> Power on - Function Key 1. Adjust contrast and brightness to zero (PC Mode). 2. Press "Exit" key for 5 seconds. Service function OSD will appear. 3.
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After changing the LCD panel, go to service function OSD. Select “Panel” with channel key. Press “Enter” key for 5 seconds. Then, panel Ch. No increase one step and the Time is reset to zero. ❈ RB19NS uses CMO 19” panel, whose lamp may not be replaced. 192MP...
5 Troubleshooting 5-1 No Power Does proper DC 14 V appear at Check adapter and CN101. DC jack connected to CN101? Does proper DC 5 V Check related circuit of IC103. appear at C12? Does proper DC 3.3 V Check related circuit of IC104. appear at C119? Does proper DC 2.5 V appear at Check IC101, IC106 and IC114.
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5 Troubleshooting 5-2 No Video (PC Signal) Power indicator is green. Does a signal appear at C110, C111 and C112 Check CN102. of R, G, B input? Does the H/V sync appear at Pin 10, 12 at IC108? Check IC108. Does the signal appear at R220, Check related circuit of IC201.
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5 Troubleshooting 5-3 No Picture (TV, Video, S-Video) Check CN601 (Tuner), Does a signal appear at 42, 52 (S-Video), 46 (Video), 47 CN307 (AV connector) and SUB PBA (AV Iuput). (RF-CVBS) of IC601 (TW9908)? Does a signal appear at Check IC601 and related circuit. Pin 2~9, Pin 22~29 of IC601? Does a signal appear at R834, R836, R837 and R839...
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5 Troubleshooting 5-4 No Sound Does a signal appear at Pin 67 (Tuner sound signal), 56, Check CN703 (PC sound), CN307 (Video 57 (PC sound) of IC702 (MSP3425G) and sound) and CN303, CN304 (DTV sound). Pin 3, 10 (Video sound) of IC705 and Pin 2, 9 (DTV sound) of IC706? Does a signal appear at Pin 27, 28 Check IC702 and related circuit.
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5 Troubleshooting 5-5 No Picture (DTV [NTSC only]) Power indicator is green. Does a signal appear at Check CN382. C222, C223 and C225? Does a signal appear at Check related circuit of IC202. Pin 64, 65, 66 and 67 of IC202? Does a signal appear at R834, R836, Check related circuit of IC801.
7 Electrical Parts List ❈ You can search for updated part codes through ITSELF web site. URL : http://itself.sec.samsung.co.kr/ 7-1-1 RB19NS Main PCB Parts Level Loc. No. Code No. Description Specification Remarks RB19NS CK-RB19NS CHIMEI,M190E2-L01 BN94-00516A ASSY PCB MAIN-CK RB19NS,ADC...
11 Schematic Diagrams ❈ This Document can not be used without Samsung’s authorization. 11-1 Power and PC Input Part Schematic Diagram +3.3V_LIVE +3.3V_LIVE IC102 100nF AT24C02N-10SC PC_VSYNC_IN PC_HSYNC_IN 1.5K CN103 100pF 100pF tpcon26p R110 4.7K 4.7K R136 DO NOT USE...
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11 Schematic Diagrams ❈ This Document can not be used without Samsung’s authorization. 11-3 MICOM Part Schematic Diagram BUZZ SIGNAL FUNCTION +3.3V_LIVE 5V_D +3.3V_LIVE IR/POWER SIGNAL +3.3V_OT REMBRANDT Right Left LED_GND 2pin signal +3.3V_LIVE SIGNAL FUNCTION SIGNAL KANDINSKY I/O FULL UP...
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11 Schematic Diagrams ❈ This Document can not be used without Samsung’s authorization. 11-4 Scaler Part Schematic Diagram +2.5V_D_JAG 2.5VJS +3.3V_JAG C402 C403 C463 C404 C405 3.3VJP +2.5V_A_JAG 2.5VJA1 C409 C410 C411 2.5VJP 3.3VJF C416 C417 C418 C420 C422 C423 C424 2.5VJF...
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11 Schematic Diagrams ❈ This Document can not be used without Samsung’s authorization. 11-5 RAM and LVDS Part Schematic Diagram +3.3V_OT DARED(0:7) IC501 M385 DARED(4) VCC_1 TXIN4 DARED(7) DARED(3) TXIN5 TXIN3 DARED(5) DARED(2) TXIN6 TXIN2 DAGRN(0) TXIN7 GND_5 DARED(1) GND_1...
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11 Schematic Diagrams ❈ This Document can not be used without Samsung’s authorization. 11-6 Tuner and Video Part Schematic Diagram +5V_DEC R604 R605 C603 22uF Q602 COM1_Y 2SC2412K-Q DTV_Y R614 R615 R616 100nF 100nF C608 C609 100nF C610 +3.3V_TW +3.3V_OT...
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Samsung Electronics Co.,Ltd. 416, Maetan-3Dong, Paldal-Gu, Suwon City, Kyungki-Do, Korea, 442-742 Printed in Korea ❈ This Service Manual is a property of Samsung P/N : BN82-00094H-00 Electronics Co., Ltd. http : //www.samsungmonitor.com (SyncMaster Worldwide) Any unauthorized use of Manual can be punished http : //www.samsung-monitor.com (SyncMaster USA)