McIntosh MHT-200 , Original Service Manual

SERVICE MANUAL Performance Specifications ................................... 2 - 3 Notes ......................................................................... 3 Rear Panel .................................................................. 4 Section Location ........................................................ 4 Block Diagram ...................................................... 5 - 7 Interconnection Diagram .................................... 8 - 10 Display Schematic and PCB ............................... 11 - 18 Keyboard Schematic and PCB ....................... 13, 17 - 18 Bottom Schematic and PCB ................................ 19 - 24 Power Supply Schematic and PCB ..................... 25 - 28 Data2 Schematic and PCB ................................. 29 - 32 Data1 Schematic and PCB ................................. 33 - 36 Digital Schematic and PCB ................................ 37 - 40 S-Video Schematic and PCB .............................. 41 - 52 Composite Video Schematic and PCB ............... 53 - 58 Main Audio Schematic and PCB ....................... 59 - 74 Multi Channel Schematic and PCB .................... 75 - 86 Amplifier Schematic and PCB .......................... 89 - 104 Tuner AM/FM Alignment Procedure ............. 105 - 106 Tuner/RAA1 Schematic and PCB ................... 107 - 110 DSP Module PCB ................................................... 111 Backup Power Supply ............................................ 112 Exploded Views and Parts Lists ...................... 113 - 114 Repacking Instruction ............................................ 115 CONTENTS A/V SYSTEM CONTROLLER Downloaded from www.Manualslib.com manuals search engine

PERFORMANCE SPECIFICATIONS 2 Preamplifier and Processor Specifications Frequency Response Stereo: Left and Right Loudspeakers: +0-0.5dB from 20Hz-20,000Hz Music 1-4: Left, Center, Right Loudspeakers: +0-0.5dB from 20Hz- 20,000Hz Large Surround Loudspeakers: +0-0.5dB from 20Hz- 20,000Hz Pro-Logic: Left, Center, Right, Large Loudspeakers: +/-0.5dB from 20Hz-20,000Hz Large Surround Loudspeakers: +1-3dB from 20Hz-6.3kHz Subwoofer 1 : 20Hz-140Hz Dolby Digital, DTS and External Input: Left, Center, Right Large Loudspeakers: +/-0.5dB from 20Hz- 20,000Hz Large Surround Loudspeakers: +/-0.5dB from 20Hz- 20,000Hz Subwoofer 1 : 20Hz-140Hz Rated Output 2V for all channels Input Impedance 22k ohms Output Impedance Less than 560 ohms for all channels Maximum Output Voltage 8V Total Harmonic Distortion 0.05% for all channels Sensitivity Analog Input: 100mV IHF Dolby Level: 200mV Input External Input: 200mV for 2.0V Output Signal To Noise Ratio Greater than 90dB A-weighted Maximum Input Signal Analog Input: 6Vrms Tone Controls +/-12dB from the flat setting 1 If any of the channels have the Loudspeaker Setting of Small, the subwoofer has a electronic low pass filter with a corner frequency of 80Hz and a 24dB per Octave roll-off in all modes except external. The Frequency Response of the Subwoofer Channel is also determined by the Crossover Setting. Power Amplifier Specifications Power Output Minimum sine wave continuous average power output per channel, all channels operating is: 100 watts into 4 ohm load, 70 watts into a 8 ohm load Rated Power Band 20Hz to 20,000Hz Total Harmonic Distortion Maximum Total Harmonic Distortion at any power level from 250 milliwatts to rated power output is: 0.05% for 4 or 8 ohm load Dynamic Headroom 1.8dB Frequency Response +0, -0.25dB from 20Hz to 20,000Hz +0, -3dB from 10Hz to 1000,000Hz Sensitivity 1.0 Volt A-Weighted Signal To Noise Ratio 92dB (112dB below rated output) Intermodulation Distortion Maximum Intermodulation Distortion if instantaneous peak output per channel does not exceed twice the rated output, for any combination of frequencies from 20Hz to 20,000Hz, with all channels operating is: 0.05% for 4 or 8 ohm loads Input Impedance 20,000 ohms Wide Band Damping Factor 100 at 4 ohms 200 at 8 ohms General Specifications Power Requirements 100 Volts, 50/60Hz at 8.4 Amps 110 Volts, 50/60Hz at 7.7 Amps 120 Volts, 50/60Hz at 7.0 Amps 220 Volts, 50/60Hz at 3.5 Amps 230 Volts, 50/60Hz at 3.5 Amps 240 Volts, 50/60Hz at 3.5 Amps Note: Refer to rear panel of the MHT200 for the correct voltage. Dimensions Front Panel: 17-3/4 inches (45.09cm) wide, 9-7/16 inches (23.97cm) high. Depth behind front mounting panel is 19 inches (48.26cm) including clearance for connectors. Panel clearance required in front of mounting panel is 1-1/8 inches (2.9cm). Weight 73 pounds (33.1kg) net, 87 pounds (39.5kg) shipping Downloaded from www.Manualslib.com manuals search engine

3 1. The heavy lines on the schematic denote the primary signal path. 2. Unless otherwise noted, all voltages indicated on the schematics are measured under the following conditions: a. AC input at 120 volts, 50/60Hz. b. All voltages are +/-10% with respect to ground. A high impedance (10 megaohm) voltmeter must be used. 4. On PC board drawings, Square pad indicates: a. Polarized Capacitors - Positive b. Diodes - Cathode c. Others - Pin 1 5. WARNING Parts marked with the symbol have critical characteristics. Use only replacement parts recom- mended by the manufacturer. NOTES FM Tuner Useable Sensitivity 14dBF which is 1.4uV across 75 ohms 50dB Quieting Sensitivity Mono: 19dBF which is 2.4uV across 75 ohms Stereo: 35dBF which is 15uV across 75 ohms Signal To Noise Ratio Mono: 75dB Stereo: 70dB Frequency Response Mono: +0, -1dB from 20Hz to 15,000Hx Stereo: +0, -1dB from 20Hz to 15,000Hz Harmonic Distortion Mono: 0.3% at 100Hz, 0.3% at 1,000Hz, 0.3% at 10,000Hz Stereo: 0.45% at 100Hz, 0.45% at 1,000Hz, 0.65% at 10,000Hz Intermodulation Distortion Mono: 0.25% Stereo: 0.45% Capture Ratio 1.2dB Alternate Channel Selectivity 75dB Spurious Response 100dB Image Response 75dB RF Intermodulation 65dB Stereo Separation 45dB at 100Hz 45dB at 1,000Hz 35dB at 10,000Hz SCA Rejection 65dB AM Tuner Sensitivity 20uV External Antenna Input Signal To Noise Ratio 48dB at 30% modulation 58dB at 100% modulation Harmonic Distortion 0.5% maximum at 50% modulation Frequency Response 50Hz to 6kHz NRSC Adjacent Channel Selectivity 45dB minimum IHF Image Rejection 65dB minimum from 540Hz to 1,600kHz IF Rejection 80dB minimum PERFORMANCE SPECIFICATIONS con’t MHT200 Downloaded from www.Manualslib.com manuals search engine

REAR PANEL SECTION LOCATIONS 4 9 COMPOSITE VIDEO PCB 6 DATA1 PCB 13 TUNER TM1 (OPTIONAL) 5 DATA2 PCB 3 BOTTOM PCB 4 POWER SUPPLY PCB 2B KEYBOARD PCB 7 DIGITAL PCB 8 S-VIDEO PCB 10 MAIN PCB 12B AMP PCB (BACK) 12A AMP PCB (FRONT) 2A DISPLAY PCB 11 MULTI CHANNEL PCB 15 DSP MODULE 16 BACKUP POWER SUPPLY PCB 14 RAA1 RAA1 14 15 16 SEE INTERCONNECT TOP VIEW WITH COVER REMOVED Downloaded from www.Manualslib.com manuals search engine

5 7 6 BLOCK DIAGRAM MHT200 AUDIO BUFFERS LEFT LISTEN AND RECORD INPUT SWITCHING TAPE LEFT AND RIGHT OUTPUT SWITCHING AUDIO BUFFERS AUX CD1 DVD TUNER VCR1 VCR2 AUX CD1 DVD TUNER TV VCR1 VCR2 RIGHT LISTEN AND RECORD INPUT SWITCHING TIME DELAY S/PDIF RECEIVER BITSTREAM SELECTOR CROSSOVER FILTERS LEFT INPUT BUFFER CENTER INPUT BUFFER RIGHT INPUT BUFFER L-SUR INPUT BUFFER R-SUR INPUT BUFFER L C R SUB EXT. PROCESSOR INPUT CONTROL MICRO L-SUR VOLUME R-SUR VOLUME SUB VOLUME RIGHT VOLUME CENTER VOLUME LEFT VOLUME ANALOG SWITCHING DIGITAL INPUT SWITCHING A B C D E F COAX DRIVER OPTICAL DRIVER TV LEFT CHANNEL VCR1 VCR2 VCR1 VCR2 RIGHT CHANNEL CONVERTER CONVERTER CONVERTER A (COAX) B (COAX) C (COAX) D (OPTICAL) E (OPTICAL) F (OPTICAL) AUX CD SAT TV DVD VCR1 2 CH A/D R L ANALOG INPUTS OPTICAL COAX DIGITAL OUTPUTS IR MICRO FRONT PANEL SENSOR ZONE B IR DATA ZONE A IR DATA CONTROL LOGIC DSP MODULE CONTROL RS232 FRONT PANEL PUSHBUTTONS FRONT PANEL ROTARY SWITCHES FRONT PANEL VOLUME TUNER CONTROL ZONE B VOLUME CONTROL FRONT PANEL DISPLAYS INPUT SWITCHING POWER CONTROL CONTROL MICRO EIGHT CHANNEL VOLUME/TONE CONTROL CONTROL MICRO DATA DRIVERS TUNER AUX CD1 CD2 TAPE1 TAPE2 SAT TV LV VCR1 VCR2 DVD ZONE A DATA DECODER ZONE B DATA DECODER DD / DTS / PRO LOGIC II DECODER L-BSUR INPUT BUFFER R-BSUR INPUT BUFFER SL SR BSL BSR BSL VOLUME BSR VOLUME CD2 TUNER TAPE1 AUX TV LV VCR1 DVD ZONE A ZONE B SUM A+B SUBWOOF INPUT BUFFER OUTPUT MUTING OUTPUT MUTING OUTPUT MUTING OUTPUT MUTING OUTPUT MUTING OUTPUT MUTING LEFT FRONT CENTER RIGHT FRONT SUBWOOFER OUTPUT MUTING OUTPUT MUTING LEFT BACK SURROUND RIGHT BACK SURROUND ZONE A 8 CHANNEL OUTPUT LEFT SURROUND RIGHT SURROUND ZB LEFT VOLUME ZB RIGHT VOLUME OUTPUT MUTING OUTPUT MUTING LEFT RIGHT ZB OUTPUT DSP EXT PROCESSOR SWITCHING L C R SUB SL SR BSL BSR L C R SUB SL SR BSL BSR L C R SUB LS RS BSL BSR 8 CHANNEL D/A DIFF AMP VOLUME AMP PREDRIVER DRIVER OUTPUT POWER GUARD GAIN ELECTRONIC ATTENUATOR PG INDICATOR DRIVER PG INDICATOR CURRENT SOURCE DC BIAS DIFF AMP VOLUME AMP PREDRIVER DRIVER OUTPUT NEGATIVE CURRENT LIMITER POSITIVE CURRENT LIMITER NEGATIVE FEEDBACK DC SENSING RELAY DRIVE TURN ON DELAY OUTPUT RELAY 1 INPUT ONE CHANNEL SHOWN OUTPUT TUNED CIRCUIT 88-108MHz TUNED CIRCUIT 88-108MHz TUNED CIRCUIT 88-108MHz FM OSCILLATOR 98.7-118.7 MHz LOCAL OSCILLATOR DOUBLE BALANCED MIXER BALANCED IF TRANSFORMER 10.7 MHz LINEAR PHASE FILTER 10.7 MHz IF AMP LINEAR PHASE FILTER 10.7 MHz IF AMP LINEAR PHASE FILTER 10.7 MHz AM OSCILLATOR 970-2160 kHz AM MIXER FM ANT RF AMP EXT AM ANT ROD ANTENNA 520-1710 kHz TUNED CIRCUIT 520-1710 kHz RF PLL LF FILTER 450 kHz IF AMP AM DETECTOR LIMITER DETECTOR MPX MPX FILTER MPX FILTER R L OUTPUTS STEREO BLEND RAA1 REMOTE AM TUNER OPTIONAL AM/FM TUNER CONTROL MICRO FET CASCODE AMP FET RF AMP TUNING AMP L AUDIO AMP R AUDIO AMP OSD ON/OFF SWITCH OSD ON/OFF SWITCH VIDEO SWITCHING SAT TV DVD VCR1 VCR2 SAT TV DVD VCR1 VCR2 ON SCREEN DISPLAY MODULE CONTROL MICRO AUX CD1 AUX CD1 ZONE A AND B COMPOSITE VIDEO SWITCHING ZONE A AND B SUPER VIDEO SWITCHING ZONE A COMPONENT VIDEO SWITCHING COMPONENT 1 COMPONENT 2 MONITOR A MONITOR B VCR1 VCR2 MONITOR A VCR2 VCR1 COMPOSITE VIDEO OUTPUTS SUPER VIDEO OUTPUTS VIDEO AMP VIDEO AMP VIDEO AMP VIDEO AMP VIDEO AMP VIDEO AMP VIDEO AMP TAPE OUT ELECTRONIC SWITCHING TAPE OUT ELECTRONIC SWITCHING TAPE OUT ELECTRONIC SWITCHING TAPE OUT ELECTRONIC SWITCHING COMPONENT VIDEO OUTPUT FUSE LINE VOLTAGE POWER SUPPLY POWER CONTROL AMPLIFIER POWER TRANSFORMER 12VAC LAMPS RECTIFIERS AND FILTERS BACKUP POWER SUPPLY 5V 15V -15V 6VAC VFD FILAMENT 33VDC TUNER -29VDC VFD 53 VDC AMP -53VDC AMP AMPLIFIER SAT SAT Downloaded from www.Manualslib.com manuals search engine

8 10 9 INTERCONNECT 1 2A DISPLAY 1 X2 X6 1 X18 X5 X1 X15 X20 X18 X17 X5 X1 X3 3 BOTTOM 2B KEYBOARD X5 5 DATA2 X12 6 DATA1 X4 7 DIGITAL X12 8 S-VIDEO X17 9 COMPOSITE VIDEO 10 MAIN AUDIO 1 X11 1 1 X33 X31 X32 1 X10 11 MULTI CHANNEL 1 1 1 J5 12B AM P (B A C K) X7 4 POWER SUPPLY X6 X9 J3 X8 1 X4 X3 X 2 J 6 J 8 J 2 J 11 J18 J12 1 1 J16 J9 J 13 J 10 J 20 1 1 J4 J14 1 J5 1 J1 1 J15 1 J 1 7 BULB2 20 GND GND GND +15A GND -29V FIL2 BULB2 BULB2 BULB1 HP_L HP_R JACKSW -15A GND +12V FIL1 BULB1 BULB1 L 2U G ND G ND + 5D I RD ATA L 3U L 1U GN D S3U CU S 7 U S6U S5U S 4 U S2U S1U L 2D G ND G N D + 5D _ 2 I RD ATA L 3D L 1D GN D S3D CD S 7 D S6D S5D S 4 D S2D S1D S EL 0 - RE S ET I RD ATA G ND FP I RD ATA O E 0 GN D + 5 VA GND MI SO OU T 2 G ND - 5 VA IN 1 S ELE C T 0 Z O NE I RD ATA B + 5 V I RD ATA A + 5 V OU T 1 M OS I SC LK + 5D D I SA B LE A S ELE C T 2 S ELE C T 1 D I S AB LE B - S L O T S ELE C T 6 + 12 V HO ME GND GND GND G ND GN D G ND G ND GND GND G ND G ND G ND + 5D GND G ND D I S AB LE A S ELE C T 0 GND G ND G ND GN D GND G ND G ND G ND G ND G ND GN D GN D G ND GN D GN D G ND G ND GN D GN D G ND I RD ATA A + 5 V I RD AT BB + 5 V S ELE C T 1 S ELE C T 2 D I S AB LE B H O ME Z O NE GND GN D G ND GN D GN D GN D GN D GND + 5D GN D GN D DI G ITAL O K GN D GND GN D G ND G ND GND GN D G ND GN D GN D GND G ND GND GND GN D GN D GND G ND RXD GND DI G INM BBCO NN DI G IN P BBCONN -INTE RRUP T0 DI G ITAL S ELEC T 1 TX D GND GN D GN D G ND G N D GND GND DI G ITAL S ELE C T 0 DI G ITAL S ELE C T 2 G ND M OSI GN D GN D GN D GND G ND GND GN D GN D G ND GN D G ND GND GND GND SC LK OU T2 IN 1 - RES ET OU T3 -INTE RRUP T2 - S L O T S ELE C T 2 CS VI DE OS W OU T MI SO OU T1 SER VM OSI VI D E O SC LK CS VI D E O T O OU T BU F G ND GN D GND GND GND GND GND ENA VI DE O LAT CH S EL NC N C X 11 G ND GN D G ND GN D G N D GN D GN D GN D G N D GN D G ND GND GND GND G ND O E 0 GND G ND G ND GND GND CS VI D E OS W OU T S EL 0 GND VI DE O SC LK CS VI DE O T O OU T BU F GN D G ND G N D G ND GND GND GND ENA VI DE O LAT C H S EL S E R VM OSI G ND GN D AMPLS AMP RS AMPC AMPBACK AMPR AMPL GND GND GND GND GND GND AMPZONER AMPZONE L GND GND AM P ZL G N D AM P Z R GND GND T U NER L GND G N D T U NERR T U NE R M U TE SC LK P LLC E M P XINDI CA T OR IND ENT DA TA OU T5 SC ANST OP SI G NAL ST RENG TH SCLK +5VA GND SEL0 OE0 FPIRDATA IRDATA -RESET MOSI IN1 GND -5VA GND OUT2 GND MISO GND GND GND GND DISABLE A OUT1 IRDATA A +5V IRDATAB+5V ZONE SELECT0 SELECT1 SELECT 2 GND +5D GND GND GND SLOTSELECT6 GND DISABLEB GND HOME GND +12V X14 GND +5D GND IRDATA A +5V GND IRDATAB+5V GND SELECT0 SELECT1 GND GND GND GND GND GND GND GND GND GND GND GND SELECT2 GND DISABLE A GND DISABLEB GND HOME ZONE GND GND GND GND GND GND GND GND GND GND GND X4 GND +5D GND DIGINMBBCONN GND DIGINP BBCONN GND GND GND GND GND GND GND GND GND GND GND GND GND GND RXD GND DIGITALOK -INTERRUPT0 DIGITALSELECT0 DIGITALSELECT1 DIGITALSELECT2 TXD GND GND GND GND GND GND GND GND GND GND GND GND IN1 MOSI MISO SCLK OUT1 OUT2 OUT3 -INTERRUPT2 -RESET GND GND GND GND GND GND GND GND GND GND CSVIDEOSWOUT -SLOTSELECT2 GND SERVMOSI ENA VIDEO VIDEO SCLK LATCHSEL CSVIDEOTO OUTBUF GND GND GND GND GND GND GND GND GND GND GND SERVMOSI ENA VIDEO LATCHSEL VIDEO SCLK SEL0 OE0 GND CSVIDEOSWOUT GND GND GND GND GND GND GND GND GND GND GND GND GND CSVIDEOTO OUTBUF GND GND GND GND GND GND GND GND GND GND GND GND GND GND GND OUT2 SLOTSELECT SERIALCLK MISO MOSI IN1 OUT1 GND IDENTCLK BULB1 MIC+ +5D +5D GND -INTERRUPT -RESET GND OUT3 IRDATA IDENTDATAOUT HP_R FIL1 +12V GND -15A JACKSW GND BULB2 BULB2 BULB2 FIL2 -29V GND +15A GND GND HP_L GND MAIN_LB JACKSW HP_R MAIN_L MAIN_C MAIN_R MAIN_LS MAIN_RS MAIN_RB +5VA CHANNEL10_BB GND HP_L GND GND GND CHANNEL9_BB GND AMP_Z_R AMP_Z_L SCLK +15A MUTEMAIN -RESET OUT2 OUT1 MOSI IN1 MAIN_SW GND GND GND GND -INTERRUPT3 GND GND OUT3 +5D -SLOT_SELECT3 FIL1 PO WE RC T R L BU L B2 BU L B1 FIL 2 CENTE R D ELAY DR IVE - 15 V - 29 V +15 A + 33 V GN D D ELAY DR IVE - 15 A G ND + 15 A D ELAY DR IVE - 15 A GND +15 A +15 +5 +5 GND GN D - 15 RELAYCONT 12VAC2 12VAC1 6VAC2 6VACTAP 6VAC1 RELAYDRV 7 6 VA C1 FIL 1 PO WE RC T R L BU L B2 BU L B1 FIL 2 C ENTE R D ELAY DR IVE - 15 V - 29 V +15 A +33 V G ND +53 V - 53 V - 53 V GND G ND +53 V 6VAC2 WT VO BK T1 GY VO/WT BK/GY 76VAC TAP 76VAC2 76VAC1 12VAC2 12VAC1 6VAC TAP 6VAC1 1 X1 J1 J2 L N 50/60Hz 120V RT2 N C NC N C N C NC NC 1 1 1 J5 12 A AM P ( F RO NT ) J 6 J 8 J 2 J 11 J18 J12 1 1 J16 J9 J 13 J 10 J 20 1 1 J4 J14 1 J5 1 J1 1 J15 1 J 1 7 +53V -53V +53V -53V +53V -53V +53V -53V J 19 +53V -53V +53V -53V +53V -53V +53V -53V CO M COM BS RS R F Z BR CO M COM CO M CO M C L S LF ZB L COM CO M TB2 LEFT FRONT + - TB4 CENTER + - TB5 RIGHT FRONT + - TB3 LEFTSURROUND + - TB6 RIGHTSURROUND + - TB7 BACKSURROUND + - TB8 ZBLEFT + - TB9 ZBRIGHT + - RT1 t° t° TEMP RELAY DRV RELAY CONT 7 6 VA C TA P 76 VA C2 J3- 1 3 J5- TU NE R J4- NC 5V 33V TUNERIR DATA 15V DATA GND LT GND PLL CE TUNER DATA MPX RT PLL CLOCK TUNER MUTE SCANSTOP SS VOLTS D1 AC AC + - X 1 +15 +5 +5 GND GND -15 PS1 320149SP OUTPUTS DELAYDRIVE -15A GND +15A PG _LI G HT 1 PG _LI G HT 2 PG _LI G HT 3 PG _LI G HT4 PG _LI G HT 1 PG _LI G HT 2 PG _LI G HT 3 PG _LI G HT4 S I G _ GN D S I G _IN 3 S I G _IN 2 S I G _IN 1 S I G _IN4 S I G _ GN D S I G _ GN D S I G _ G ND S I G _ GND S I G _IN 3 S I G _IN 2 S I G _IN 1 S I G _IN4 S I G _ GND S I G _ GN D S I G _ GN D DELAYDRIVE -15A GND +15A PG_LIGHT1 PG_LIGHT2 PG_LIGHT3 PG_LIGHT4 GND GND SLOTSELECT SERIALCLK MISO MOSI IN1 OUT1 OUT2 IDENTCLK MIC+ +5D +5D GND INTERRUPT -RESET GND OUT3 FP_IRDATA IDENTDATAOUT 14 RAA1 RAA1 INTERCONNECT CABLE 1 1 1 (C G N D) (C) ( LF ) ( ZB L ) ( L S) ( LF G N D) ( Z B L GN D) ( L SG N D) (BS G N D) (BS) (R F) ( ZBR) (RS) (R F GN D) ( Z BR GN D) (RS G N D) PG_LIGHT1 PG_LIGHT2 PG_LIGHT3 PG_LIGHT4 NC GND NC NC 1 7 R F IN TU NE V GN D FMANT 1 TU NE V EX TGND EX TAN T R F IN GND 16 DSP DSP DSP DSP MODULE 15 BULB1 BULB1 GND GND GND GND - 15 A MI O + HP _ R H P _L +15 A JA CK S W G ND G ND G ND GND - 15 A_ 2 MI O + D HP _ RD HP _L D +15 A_ 2 JA CKS W D X19 AMP_Z_R -5A MIC+ MAIN_RB MAIN_LB MAIN_C MAIN_R MAIN_L AMP_Z_L MAIN_SW GND GND GND GND GND GND GND GND GND CHANNEL19_BBL MAIN_LS MAIN_RS +5VA +5VA +15A +15A GND GND CHANNEL10_BB GND GND GND GND GND GND -15A -15A +33V X5 OUT1 +5D +5D DIGINP_BBCONN DIGINM_BBCONN SCLK MOSI MISO OUT2 OUT3 GND +5D +12V GND GND GND GND GND GND POWERSHUTDOWN DIGITALSELECT2 TXD RXD FP_IRDATA IRDATA MUTE MAIN DIGITALSELECT0 DIGITALSELECT1 -INTERRUPT3 GND IN1 -SLOT_SELECT2 -SLOT_SELECT3 -SLOT_SELECT6 -INTERRUPT0 GND -INTERRUPT2 -INTERRUPT6 -RESET DIGITALOK -15A +5VA +5VA X 1 AM P _Z_ R - 5 A MI C + MAIN_ RB MAIN_L B MAIN_ C MAIN_ R MAIN_L AM P _Z_L MAIN_ S W GND G ND GN D G N D GND G N D G N D G N D G N D C HANNEL 19_ BB L MAIN_L S MAIN_ RS +5 VA + 5 VA + 15 A +15 A G ND GND C HANNEL 10_ BB GND GND GND G N D G N D GND - 15 A - 15 A +33 V X 3 OU T1 + 5D + 5D DI G INP _ BBCONN DI G INM_ BBCO NN SC LK M OSI MI SO OU T2 OU T 3 G N D + 5D +12 V G N D GND G N D G N D G N D GND PO WE RSHU T DO WN DI G ITAL S ELE C T 2 TX D R XD FP _I RDA TA I RD ATA M U TE MAIN DI GITAL S ELE C T 0 DI GITAL S ELE C T 1 -INTE RRUP T3 G N D IN 1 - S L O T_ S ELE C T 2 - S L O T_ S ELE C T3 - S L O T_ S ELE C T6 -INTE RRUP T0 G N D -INTE RRUP T 2 -INTE RRUPT 6 - RE S ET DI GITAL O K +5 VA +5 VA MAIN_LB JACKS W HP_R MAIN_L MAIN_C MAIN_R MAIN_LS MAIN_RS MAIN_RB +5VA CHANNEL10_BB GND HP_L GND GND GND CHANNEL9_BB GND AMP_Z_R AMP_Z_L SC LK +15A MUTEMAIN -RESET OUT2 OUT1 M OSI IN 1 MAIN_S W GND GND GND GND -INTERRUPT3 G N D GND OU T3 + 5D - S L O T_ S ELE C T3 -15A Downloaded from www.Manualslib.com manuals search engine

11 12 MHT200 DISPLAY 320167 SH 1 OF 4 2A D 14 A 11 SER 10 B 12 C 13 CLK inh 15 SH/DL 1 CLK 2 E 3 F 4 G 5 H 6 Qh 7 Qh 9 VCC 16 GND 8 IC10 74HC165 LatchIn SerialClk D 14 A 11 SER 10 B 12 C 13 CLK inh 15 SH/DL 1 CLK 2 E 3 F 4 G 5 H 6 Qh 7 Qh 9 VCC 16 GND 8 IC2 74HC165 MISO Data Input R69 4k7 +5D +5D TP1 R9 4k7 PRE 10 CLK 11 D 12 CLR 13 Q 9 Q 8 IC7B 74HC74 SPI_OUT_E -Interrupt Q 5 Q 6 14 7 C24 100n +5D R30 10k C26 22n R7 10k +5D D2 LL4148 D1 LL4148 +5D ClearInt D10 LL4148 R28 4k7 D9 LL4148 Manual latching This stores the data in buffers after it has been latched in. It can be read after SPI_OUT_E has been triggered. KBD_SCK_INHIBIT C33 100n D4 LL4148 R66 4k7 D3 LL4148 +5D_2 +5D_2 R62 4k7 R59 4k7 R57 4k7 R56 4k7 R54 4k7 +5D_2 +5D_2 +5D_2 +5D_2 D11 LL4148 D16 LL4148 D23 LL4148 D25 LL4148 C6 100n TrimUp TrimDown LateNight ZoneB SysOff Standby SW2 SW1 SW3 SW4 SW6 SW7 +5D R96 120k PRE 4 CLK 3 D 2 CLR 1 Q 5 Q 6 VCC 14 GND 7 IC5A 74HC74 1 2-clockwise 2-Counterclockwise R90 120k detent "click" Rotary PRE 4 CLK 3 D 2 CLR 1 VCC GND IC7A 74HC74 ClearInt C52 100uF +5D C40 100uF +5D C54 3n3 C55 3n3 detent C20 100uF +5D C42 100uF +5D +5D +5D LatchIn ClearInt TP2 1 CCW 3 CW case ROT1 +5D 1 CCW 3 CW case ROT3 1 CCW 3 CW case ROT2 +5D +5D D8 LL4148 D7 LL4148 D26 LL4148 D24 LL4148 D6 LL4148 D5 LL4148 C8 100n C7 100n C5 100n C4 100n C3 100n C14 100n R18 4k7 R16 4k7 R13 4k7 R11 4k7 R2 4k7 R1 4k7 +5D D17 LL4148 R8 4k7 Volume Rotary R95 20k R89 20k D13 LL4148 +5D_2 C22 100n +5D INPUT TRIM SURR.MODE S1u S2u S3u S4u S5u S6u S7u S1d S2d S3d S4d S5d S6d S7d Cu Cd On the snap-off board SW5 Setup R100 1k C61 10n PCB of Rotary E1 MC ROT PCB PCB of Rotary E2 MC ROT PCB PCB of Rotary E3 MC ROT PCB MH2 MH5 MH1 A 1 4 C 3 5 B 2 ROT4 ALPS EC11E1830401 washer for rotary E4 washer for rotary E6 washer for rotary E5 NOTE ! Extra washers of the rotaries are installed bottom side of the board. Rotary board header X19 Rotary board header X10 Rotary board header X20 MH6 MH6 C36 100n C46 100n C44 100n C43 100n C38 100n C41 100n C34 100n KEYBOARD 2B Downloaded from www.Manualslib.com manuals search engine

13 14 DISPLAY 320167 SH 2 OF 4 2A KEYBOARD 2B R39 47k R40 47k R42 47k R43 47k R44 47k R46 47k R63 47k R64 47k R67 47k R68 47k R70 47k R71 47k R84 47k R79 47k R37 47k R38 47k R75 47k R78 47k R77 47k R76 47k R32 47k R36 47k R29 47k R33 47k R35 47k R34 47k R74 47k R72 47k -29V -29V FilamentVoltage Fil1 Fil2 IdentDataOut IdentClk -Interrupt -reset SlotSelect SerialClk MISO MOSI Mic+ IRdata In1 Out1 Out2 Out3 D 14 A 11 SER 10 B 12 C 13 CLK inh 15 SH/DL 1 CLK 2 E 3 F 4 G 5 H 6 Qh 7 Qh 9 VCC 16 GND 8 IC1 74HC165 -reset IdentClk C1 100n IdentDataOut Slot Identification circuit +5D +5D Slot + power + HP connector Standard Slot Circuits: R14 4k7 R12 4k7 R10 4k7 R6 4k7 R3 4k7 +5D +5D C2 100uF +5D R5 4k7 R15 10k Scope hooks, power for prototyping etc. 1 2 X2 X2P1M Not Installed 1 2 X13 X2P1M Not Installed +5D 1 2 X7 X2P1M Not Installed +5D 1 2 X11 X2P1M Not Installed 1 2 X8 X2P1M Not Installed LatchIn SPI_OUT_E ClearInt LatchOut MOSI Vcc 16 GND 8 Y0 15 Y1 14 Y2 13 Y3 12 Y4 11 Y5 10 Y6 9 Y7 7 A0 1 A1 2 A2 3 E1 4 E2 5 E3 6 IC4 74HC138 C21 100n TP4 +5D Out3 Out2 Out1 Generating Strobes +5D +5D C28 100n -VFD_POR SerialClk 3 2 1 VCC 14 GND 7 IC8A 74HC02 5 6 4 IC8B 74HC02 8 10 9 IC8C 74HC02 +5D +5D C31 100n -VFD_POR R47 10R C30 22u 25V +4.9V D1 33 D2 34 D3 35 D4 36 D5 37 D6 38 VEE 39 D7 40 D8 41 D9 42 D10 43 D11 44 D12 1 LED1 2 LED2 3 LED3 4 LED4 5 LED5 6 VSS 7 VEE 8 SEGP 9 SEGO 10 SEGN 11 SEGM 12 SEGL 13 SEGK 14 SEGJ 15 SEGI 16 VEE 17 SEGH 18 SEGG 19 SEGF 20 SEGE 21 SEGD 22 SEGC 23 SEGB 24 SEGA 25 SCLK 26 DATA IN 27 LOAD 28 OSCI 29 OSCO 30 /POR 31 VDD 32 IC9 MSC7112-01 DS6 DS5 DS2 DS1 DS3 DS4 DS8 DS10 DS7 DS9 Light bulbs Bulb1 Bulb2 -29V 11 12 13 IC8D 74HC02 VFD_Load VFD_Load -VFD_data_En -VFD_data_En Bulb1 Bulb2 Fil1 Fil2 +15A -15A JackSw +12V HP_R HP_L MH3 MH1 MH2 MH4 Mounting holes MH5 MH6 MH1 MH2 MH5 R101 0R R102 0R R103 0R 1 3 2 REC1 Temic TSOP1738 C15 100uF R26 330R C23 100n R27 22k +5D_2 +5D_2 IR receiver S1d S2d S3d S4d S5d S6d S7d Cd L1d L2d L3d IRdatad IRdatad +5D_2 On the snap-off board S1 SLS121RA (T&B) R31 NOT INSTALLED Optional S1 / R31 IRdata S1u S2u S3u S4u S5u S6u S7u Cu L1u L2u L3u +5D 3 4 5 6 7 8 9 10 11 12 14 13 1 2 15 16 18 17 19 20 21 23 25 22 24 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 X1 X40P2M R111 0R MH6 HP_R HP_Ld HP_L HP_Rd JackSw JackSwd -29V Mic+d Mic+ C62 CAP:47PF:0805 NP0:5%:50V R112 RES:47K:0805:1%:0W1 3 4 5 6 7 8 9 10 11 12 14 13 1 2 15 16 18 17 19 20 21 23 25 22 24 26 X5 X26P2M 3 4 5 6 7 8 9 10 11 12 14 13 1 2 15 16 18 17 19 20 21 23 25 22 24 26 X6 X26P2M MH7 MOUNTING HOLE MH8 MOUNTING HOLE MH9 MOUNTING HOLE MH10 MOUNTING HOLE MH11 MOUNTING HOLE MH12 MOUNTING HOLE MH13 MOUNTING HOLE F 1 Pk 2 Pi 3 Pl 4 Pn 5 Pm 6 Pj 7 Pc 8 Pd 9 G12 10 G11 11 G10 12 G9 13 G8 14 G7 15 G6 16 G5 17 G4 18 G3 19 G2 20 G1 21 Pcom 22 Pdp 23 Pe 24 Ph 25 Pg 26 Pf 27 Pb 28 Pa 29 F 30 VF DISPLAY DISP1 NORITAKE16 McIntosh LOGO1 MCINTOSH_LOGO +15A_2 -15A_2 -15A +15A R147 RES:100R:0805:5% C70 CAP:10NF:0805:X7R:20%:50V Needed in "Trim off", see MHT2FV1_trim_off.txt SUPP1 Downloaded from www.Manualslib.com manuals search engine

15 16 MHT200 DISPLAY 320167 SH 3 OF 4 2A SERIN 14 SRCLK 11 SRCLR 10 RCLK 12 G 13 Q0 15 Q1 1 Q2 2 Q3 3 Q4 4 Q5 5 Q6 6 Q7 7 SEROUT 9 VCC 16 GND 8 IC3 74HC595 LatchOut MOSI LED1 R17 330R C9 100n R22 330R R25 330R R21 330R R24 330R R20 330R R23 330R R19 330R LED4 LED3 LED2 LED5 LED6 LED7 LED8 CenterSpkr SurrSpkr SubW Off Treble Bass Tune Display SERIN 14 SRCLK 11 SRCLR 10 RCLK 12 G 13 Q0 15 Q1 1 Q2 2 Q3 3 Q4 4 Q5 5 Q6 6 Q7 7 SEROUT 9 VCC 16 GND 8 IC11 74HC595 LED21 R88 330R C53 100n LED19 LED18 LED26 LED25 LED24 LED23 Cinema1 Stereo Cinema2 External Music1 Music3 Music4 SERIN 14 SRCLK 11 SRCLR 10 RCLK 12 G 13 Q0 15 Q1 1 Q2 2 Q3 3 Q4 4 Q5 5 Q6 6 Q7 7 SEROUT 9 VCC 16 GND 8 IC6 74HC595 LED17 C25 100n LED22 LED11 ZoneB Standby ProLogic DTS LED20 R94 330R R99 330R R93 330R R98 330R R92 330R R97 330R R91 330R R65 330R R86 330R R58 330R R4 10k +5D +5D +5D +5D +5D +5D Music2 PRE 10 CLK 11 D 12 CLR 13 Q 9 Q 8 IC5B 74HC74 +5D -EnLeds -EnLeds -EnLeds -EnLeds -reset LatchOut -EnLeds C13 100n C12 100n C11 100n C10 100n C19 100n C18 100n C17 100n C16 100n C51 100n C50 100n C49 100n C48 100n C60 100n C59 100n C58 100n C57 100n C45 100n C56 100n C27 100n TRIM LEDS SURROUND MODE LEDS Expand LateNight C35 100n C47 100n C32 100n +5D R48 10k +5D R73 10k +5D R55 10k +5D POWER GUARD LEDS SerialClk TP5 L1u L2u L3u L1d L2d L3d On the snap-off board 3 1 Q4 BC848B/BCW32 3 2 1 Q5 BC848B/BCW32 3 2 1 Q2 BC848B/BCW32 3 2 1 Q3 BC848B/BCW32 R109 560R R148 560R R110 560R 5 LED BAR X16 CES-110-01-T-S Samtec R49 not installed 5 LED BAR X12 CES-110-01-T-S Samtec R82 not installed C37 100n 5 LED BAR X15 CES-110-01-T-S Samtec 4 3 6 5 8 7 10 9 2 1 5 LED BAR X14 CES-110-01-T-S Samtec LF LS RS RF BS C MOLDfor PG leds M5 MOLDfor PG leds M6 MOLDfor PG leds M7 MOLDfor selector leds M8 MOLDfor selector leds M9 MOLDfor selector leds M10 MOLDfor selector leds M11 LED27 LED28 LED30 LED32 LED31 LED29 NOTE ! LED bars need socket strips, e.g SAMTEC CES-110-01-T-S 3 4 5 6 7 8 1 2 X18 X8P2M R104 560R R105 560R R106 560R A 1 K 3 E 4 C 6 IC12 TLP127 Toshiba R107 240R Standoff for led E7 Standoff for led E8 Standoff for led E9 DTS DTS DTS ES DTS ES ProLogic ProLogic DD EX DD PGuard PGuard R117 300R R118 not installed R85 300R R87 not installed Dolby Digital R41 10k C29 100n +5D 3 2 1 Q1 BC848B/BCW32 5 LED BAR X17 CES-110-01-T-S Samtec R45 not installed DD R119 300R R120 not installed R52 10k C39 100n +5D 3 2 1 Q6 BC848B/BCW32 5 LED BAR X22 CES-110-01-T-S Samtec PL2Mo R83 300R R108 300R R126 300R R53 10k C68 100n +5D 3 2 1 Q7 BC848B/BCW32 5 LED BAR X23 CES-110-01-T-S Samtec PL2Mu R127 300R R128 300R R129 300R R60 10k C69 100n +5D 3 2 1 Q8 BC848B/BCW32 5 LED BAR X24 CES-110-01-T-S Samtec Neo:6 R130 300R R131 300R R132 300R SERIN 14 SRCLK 11 SRCLR 10 RCLK 12 G 13 Q0 15 Q1 1 Q2 2 Q3 3 Q4 4 Q5 5 Q6 6 Q7 7 SEROUT 9 VCC 16 GND 8 IC13 74HC595 +5D -EnLeds DD EX PL2Mo PL2Mu Neo:6 TP3 TP6 C67 100n +5D R80 300R R81 300R R121 300R R135 not installed R136 300R R137 not installed R134 300R R61 not installed R122 not installed R123 300R R124 300R R139 300R R140 300R R145 not installed R146 not installed R143 300R R144 300R R138 300R R125 not installed R133 not installed R141 not installed R142 not installed TP8 TP7 LEDS2 LEDS2 LEDS4 LEDS4 LatchOut LatchOut LatchOut SerialClk SerialClk SerialClk MOLDfor mode leds M1 MOLDfor mode leds M2 MOLDfor mode leds M3 MOLDfor mode leds M4 NOTE! Ledbars Stanley MU07-4101 are assembled to MOLDs M1,M2,M3 and M4 LEDBAR LED9 Stanley MU07-4101 LEDBAR LED10 Stanley MU07-4101 LEDBAR LED12 Stanley MU07-4101 LEDBAR LED13 Stanley MU07-4101 MOLDfor mode leds M12 MOLDfor mode leds M13 MOLDfor mode leds M14 MOLDfor mode leds M15 LEDBAR LED14 Stanley MU07-4101 LEDBAR LED15 Stanley MU07-4101 LEDBAR LED16 Stanley MU07-4101 LEDBAR LED33 Stanley MU07-4101 KEYBOARD 2B Downloaded from www.Manualslib.com manuals search engine

17 18 DISPLAY 320167 SH 4 OF 4 AND PCB 2A KEYBOARD 320167 2B Headphone Connector 5 6 7 IC21B TL072 -15A_2 R116 1k R115 100k C66 10p +15A_2 R113 100k R114 100k C65 100n C64 100n -15A_2 +15A_2 3 2 1 8 4 IC21A TL072 1 2 X21 Not Installed C63 10u Mic+d 4 3 1 2 X9 AD Electronics 3052-40 4 3 1 2 R50 22k X3 R51 1M D12 LL4148 D14 LL4148 +5D_2 +5D_2 JackSwd HP_Ld HP_Rd 1 2 3 4 X4 X4F1M HP_Rd HP_Ld JackSwd not installed AD Electronics 3052-40 Downloaded from www.Manualslib.com manuals search engine