TABLE OF CONTENTS PROTECTION OF EYES FROM LASER BEAM DURING SERVICING ............3 PRECAUTION TO REPLACE OPTICAL BLOCK ....................3 SPECIFICATIONS ..............................4 ACCESSORIES / PACKAGE LIST ........................4 MODEL NO. MX–NH2000 ELECTRICAL MAIN PARTS LIST ........................ 5 ~ 8 TRANSISTOR ILLUSTRATION ..........................
PROTECTION OF EYES FROM LASER BEAM DURING SERVICING This set employs laser. Therefore, be sure to follow carefully CAUTION the instructions below when servicing. Use of controls or adjustments or performance of proce- dures other than those specified herin may result in WARNING!! hazardous radiation exposure.
MODEL NO. MX-NH2000 ELECTRICAL MAIN PARTS LIST REF. NO. PART NO. KANRI DESCRIPTION REF. NO. PART NO. KANRI DESCRIPTION C102 87-010-917-000 CAP,E 3300-50 M SMG C103 87-016-658-000 CAP,E 4700-35 M SMG 8A-SP1-601-010 C-IC,UPD780228GF-065-3BA C104 87-016-658-000 CAP,E 4700-35 M SMG 87-A20-914-010 IC,SPS-442-1-F C105 87-012-368-080...
CHIP RESISTOR PART CODE Chip Resistor Part Coding Figure Resistor Code Value of resistor Chip resistor Dimensions (mm) Wattage Type Tolerance Symbol Resistor Code Form 1/16W 1005 0.35 1/16W 1608 0.45 1/10W 2125 1.25 0.45 1/8W 3216 0.55 TRANSISTOR ILLUSTRATION (MX-NH2000) E C B E C B B C E...
IC DESCRIPTION (MX-NH2000) IC, UPD780228GF-065-3BA Description Pin No. Pin Name K-SCAN Key scan output. RHYTHM-CS Chip select output to IC, BU9990-03FS. (Not used) RHYTHM-SCLK Clock output to IC, BU9990-03FS. (Not used0 RHYTHM-SD Data output to IC, BU9990-03FS. (Not used) PLL CE PLL IC chip enable output.
Page 21
Pin Name Description Pin No. I-RDS-SIG Tuner tuning signal level A/D input. I-MIC MIC input level detection. KEY1 KEY1 input. KEY2 KEY2 input. I-TEMPO TEMPO input (100Hz, 3.3kHz). I-GE-2 DEMO, TIMER, CLOCK, SPICE A, AUTO SPICE / FILL IN input. I-GE-1 JOG, SPICE B SW input.
Page 22
IC, M65849BFP-631D Description Pin No. Pin Name MCLKONT Controls build-in-clock generation circuit with external R. TEST1 Test mode "H" : Normal / "L" : Test. CLOCK Clock input via serial bus. Strobe input via serial bus. DATA Data input via serial bus. Clock output.
ADJUSTMENT <TUNER>(MX-NH2000) 6. AM IF Adjustment < TUNER SECTION > Settings : • Test point : TP5 (Lch), TP6 (Rch) 1. Clock Frequency Check • Adjustment location : Settings : • Test point : TP2 (CLK) L772 ......450kHz Method : Set to MW 1602kHz and check that the test point is 2052kHz ±...
IC DESCRIPTION (DX-NH2000) IC, UPD78044HGF Description Pin No. Pin Name – Not connected. G6~G1 FL grid output G6~G1. – Power supply terminal. O-DISH R CD turntable reverse rotation output. O-DISH F CD turntable forward rotation output. – Connected to pull-down resistor I/O BUSY DSP serial latch output.
Page 32
Pin Name Description Pin No. LED6 Disc3 LED output. – Power supply terminal. – Connected to pull-down resistor. – Connected to pull-down resistor. FL segment output P22. FL segment output P19. FL segment output P18. FL segment output P17. FL segment output P16. FL segment output P15.
TRANSISTOR ILLUSTRATION (FX-NH2000) B C E E C B 2SK2158 2SA1296 2SC1815GR 2SC3052 2SC3266GR CSA1362 KTC3198GR RN1410 RT1N141C RT1N144C RT1P141C E C B 2SA933SRS – 37 –...
IC DESCRIPTION (FX-NH2000) IC, M38503M4-094FP T4 Description Pin No. Pin Name – IC power supply. V-REF – Connected to VCC. AVSS – Connected to GND. – Not connected. I-AUTO-1 Input of DECK 1 reel platform pulse. I-AUTO-2 Input of DECK 2 reel platform pulse. O-REC-SEL O-PB-SEL O-PB-SEL...
Page 43
Description Pin No. Pin Name O-DIMMER Ordinarily “H”. When MX-NH2000 is in DIMMER 1 or 2 mode: “L”. I-KEY2 KEY input 2. AD input. I-KEY1 KEY input 1. AD input. I-MS MS input. AD input. I-HOLD System power supply monitor. AD input. *P1Ns 22, 23, 24, 25, and 26 should be “H”...
IC DESCRIPTION (GE-NH2000) IC, LC866448W Pin No. Pin Name Description O-C.SHIFT Micro computer clock shift output. PRO LOGIC PRO LOGIC LED output. 3-STEREO 3 STEREO LED output. PHANTOM PHANTOM LED output. NORMAL NORMAL LED output. – Not connected. RESET Reset input. –...
SPEAKER DISASSEMBLY INSTRUCTIONS Type.1 Type.4 Insert a flat-bladed screwdriver into the position indicated by the TOOLS arrows and remove the panel. Remove the screws of each speaker 1 Plastic head hammer unit and then remove the speaker units. 2 (() flat head screwdriver 3 Cut chisel How to Remove the PANEL, FR Type.2...