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D/A CONVERTER
CONTENTS
Performance Specifications ........................................ 2 Notes ......................................................................... 2 Rear Panel .................................................................. 3 Section Location ........................................................ 4 Block Diagram ...................................................... 5 - 6 Interconnection Diagram ...................................... 7 - 8 Main Schematic and PCB ................................... 9 - 18 Keyboard Supply Schematic and PCB ............... 19 - 20 Display Schematic and PCB .............................. 21 - 22 Dataport Schematic and PCB ............................ 23 - 24 Parts List ............................................................ 25 - 30 Exploded View and Parts List ............................. 31 - 32 Repacking Instructions ............................................. 33
SERVICE MANUAL
PERFORMANCE SPECIFICATIONS
Analog Audio Specifications
Frequency Response +/-0.5dB from 4Hz to 45,000Hz (Sampling Frequency 96kHz and 88.2kHz) +/-0.3dB from 4Hz to 22,000Hz (Sampling Frequency 48kHz) +/-0.3dB from 4Hz to 20,000Hz (Sampling Frequency 44.1kHz) +/-0.3dB from 4Hz to 15,000Hz (Sampling Frequency 32kHz) Total Harmonic Distortion 0.002% at 1,000Hz Signal To Noise Ratio Better than 110dB (A Weighted) Dynamic Range Better than 100dB (1,000Hz) Rated Output Voltage 2V Unbalanced Outputs (Bypass On Mode) 6V Unbalance Outputs (Bypass Off Mode) 2V Balanced Outputs (Bypass On Mode) 6V Balanced Outputs (Bypass Off Mode) Coaxial Inputs (1, 2 and 3) 0.5V p-p @ 75ohms Optical Inputs (4, 5 and 6) -15 ~ -20dBm XRL Input (7) 5V p-p @ 110ohms Sampling Frequencies 96kHz, 48kHz, 44.1kHz and 32kHz
General Specifications
Power Requirements 100 Volts 50.60Hz, 20 watts 110 Volts 50/60Hz, 20 watts 120 Volts 50/60Hz, 20 watts 220 Volts 50/60Hz, 20 watts 230 Volts 50/60Hz, 20 watts 240 Volts 50/60Hz, 20 watts Note: Refer to the rear panel of the MDA1000 for the correct voltage. Overall Dimensions Width is 17-1/2 inches (44.45cm), Height is 6 inches (15.24cm) including feet, Depth is 16-1/8 inches (40.96cm) including Front Panel and Knobs Weight 24 pounds (10.89kg) net, 38 pounds (17.24kg) in shipping carton
Digital Audio Specifications
Digital Audio Format IEC958, S/PDIF
NOTES
1. The heavy notes 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. 3. Unless otherwise specified: a. Resistor values are in ohms. b. Capacitor values are microfarads (uF). c. Inductor values are in microhenries (uH).
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 recommended by the manufacturer.
2
MDA1000
TOP AND REAR PANEL
3
SECTION LOCATIONS
6
DATAPORT PCB
MAIN PCB
2 3
UPSAMPLING PCB
TRANSFORMER
5
DISPLAY PCB
4
KEYBOARD PCB
TOP VIEW WITH COVER REMOVED
4
MDA1000
BLOCK DIAGRAM
MUTE RELAY 1 2 3 DIGITAL INPUT 4 5 6 COAXIAL COAXIAL COAXIAL OPTICAL OPTICAL OPTICAL MCK XLR DIFFERENTIAL AMP DIGITAL INTERFACE RECEIVER BCK LRCK BCK LEFT + 24BIT D/A CONVERTER LEFT + I/V CONV. LDATA LEFT + 24BIT D/A CONVERTER
LEFT UNBALANCED
DATA
LRCK
768KHz UPSAMPLING MODULE
BYPASS CONTROL RELAY LEFT BALANCED OUTPUT LEVEL CONTROL BYPASS CONTROL RELAY
LEFT + FILTER
LEFT + BALANCED AMP
MUTE RELAY
+
7
RDATA
LEFT DIFFERENTIAL AMP
LEFT BALANCED
LEFT 24BIT D/A CONVERTER LEFT I/V CONV.
LEFT FILTER
1 2 DATA PORT 3 4 5 6 7 MICROCONTROLLER IR SENSOR IR INPUT DATA INPUT INPUT LEVEL SELECT SETUP CONTROLS DISPLAY DRIVER RIGHT + 24BIT D/A CONVERTER RESET DATA PORT DRIVER S/F DIVIDER LEFT 24BIT D/A CONVERTER
LEFT BALANCED AMP
MUTE RELAY
-
OUTPUTS
MUTE RELAY RIGHT + 24BIT D/A CONVERTER RIGHT + I/V CONV.
RIGHT UNBALANCED
BYPASS CONTROL RELAY RIGHT BALANCED OUTPUT LEVEL CONTROL BYPASS CONTROL RELAY
RIGHT + FILTER
RIGHT + BALANCED AMP
MUTE RELAY
+
V. F. DISPLAY RIGHT 24BIT D/A CONVERTER RIGHT I/V CONV. RIGHT 24BIT D/A CONVERTER
RIGHT DIFFERENTIAL AMP
RIGHT BALANCED
IN POWER CONTROL OUT POWER CONTROL RELAY POWER CONTROL
DISPLAY ANALOG VOLTAGE SUPPLY
5V 15V -15V -5V
RIGHT FILTER
RIGHT BALANCED AMP
MUTE RELAY
-
120VAC 50/60Hz
POWER SWITCH
FUSE
POWER TRANSFORMER
DIGITAL LOW VOLTAGE SUPPLY
3.3V 5V
5V 3.3V
STANDBY LOW VOLTAGE SUPPLY
5
6
1
4
INTERCONNECT
5 DISPLAY
KEYBOARD
7
J1 1 1 J2 1
GND SETUP LED KBLED SETUP GND REM GND NS5V STBY/LED GND STBY/ON GND
GND SETUP LED KBLED SETUP GND REM GND NS5V STBY/LED GND STBY/ON GND
6 DATAPORT
2 MAIN
J1
GND GND REM GND GND LCLK GND SCLK GND DATA GND NS5V
1
J1 1
3
J6
FIL1 FIL2 5VD GND GND GND -29V GND GND NS5V CE CL DI BLK STBY/ON SETUP NC LEVB LEVA REM SETUP LED INPUT CW INPUT CCW
MODULE 049999
FIL FIL 5VD GND GND GND -29V GND GND NS5V LCLK2 SCLK2 DATA2 BLK STBY/ON SETUP BYPASS LED LEVB LEVA REM SETUP LED INPUT CW INPUT CCW
1 J13
8 J14
AC6V GRN AC6V GRN RED AC26V BLK AC26VCT AC26V RED YEL AC14V BLU AC14VCT AC14V YEL
GND GND REM GND GND LCLK1 GND SCLK1 GND DATA1 GND NS5V
1
AC L
J8
BLK
YEL
YEL
BLU
RED WHT
RED ORN
GRN
GRN T1
BLK
AC H
J7 6 6 6 6
VIO
BLK
BLU
GRY
8
J9
J11
J10
J12
120V B 20V B 0V B 120V A 100V A 0V A
WHT 120V B ORN 20V B 0V B VIO GRY 120V A BLU 100V A BLK 0V A
120V B 20V B 0V B 120V A 100V A 0V A
120V B 20V B 0V B 120V A 100V A 0V A
100V 1
120V 1
220V 1
240V 1
S1 POWER
WHT
120V AC 50/60Hz
BLK
MDA1000
2
MAIN 049988 SH 1 OF 4
9
10
2
MAIN 049988 SH 2 OF 4
11
12
MDA1000
2
MAIN 049988 SH 3 OF 4
13
14
2
MAIN 049988 SH 4 OF 4
15
16
MDA1000
2
MAIN 049988
3
MODULE O49999
17
18
4
KEYBOARD 049990
J2:8
5
NS5V
J1:5
5V SENSOR Q1
3
Vout
1
1
2
R2 75
C1 10uF
G ND
J2:2
5
V cc
2
R1 10
J1:11
3
C3 .1uF
SETUP LED
MT1
C2 47uF
J2:5 J2:6 J2:1
5 5 5
GND REM GND
J1:8 J1:7 J1:12
DS1 R2
DS2 *
J1 * MT1 C1
R1 C3
DS3 C2
1.9V KBLED SETUP GND STBY LED GND STBY/ON GND J1:10 J1:9 J1:6 J1:4 J1:3 J1:2 J1:1 S2 1.9V S1
DS1 DS2
Q1 129485 Rev.A
J2:3 J2:4 J2:7 J2:9 J2:10 J2:11 J2:12
5 5 5 5 5 5 5
S1
SETUP
S2
* Denotes components on the reverse or backside of the Pc Bd
DS3
STANDBY/ON
19
20
MDA1000
5
DISPLAY 049989
21
22
6
DATAPORT 049991
23
24
MDA1000
PARTS LIST
Ref. No.
1
Description
Part No.
064312 061305 061305 066413 064316 066413 064312 064312 064312 064312 064300 064312 064312 064312 061305 064312 061305 066411 061305 061305 061305 066411 061305 061304 061304 061304 061304 061304 066413 061305 061304 061305 066412 061305 061305 066412 061305 066513 064427 064427 066254 061300 066413 061305 061305 066509 066509 066509 066509 061304 061305 061305 061305 061305 061305 066254 066215 066414
MAIN PCB 049988 C1 CAP MPF 0.01UF 5% 63VDC C2 CAP MONO .1uF 50V 20% Z5U C3 CAP MONO .1uF 50V 20% Z5U C4 CAP ELECT 47UF 25V C5 CAP MPF 0.022UF 5% 63VDC C6 CAP ELECT 47UF 25V C7 CAP MPF 0.01UF 5% 63VDC C8 CAP MPF 0.01UF 5% 63VDC C9 CAP MPF 0.01UF 5% 63VDC C10 CAP MPF 0.01UF 5% 63VDC C11 CAP PF 0.001UF 5% 63VDC C12 CAP MPF 0.01UF 5% 63VDC C13 CAP MPF 0.01UF 5% 63VDC C14 CAP MPF 0.01UF 5% 63VDC C15 CAP MONO .1uF 50V 20% Z5U C16 CAP MPF 0.01UF 5% 63VDC C17 CAP MONO .1uF 50V 20% Z5U C18 CAP ELECT 10UF 100VDC C19 CAP MONO .1uF 50V 20% Z5U C20 CAP MONO .1uF 50V 20% Z5U C21 CAP MONO .1uF 50V 20% Z5U C22 CAP ELECT 10UF 100VDC C23 CAP MONO .1uF 50V 20% Z5U C24 CAP MONO .01UF 50V 20% X7R C25 CAP MONO .01UF 50V 20% X7R C27 CAP MONO .01UF 50V 20% X7R C28 CAP MONO .01UF 50V 20% X7R C29 CAP MONO .01UF 50V 20% X7R C30 CAP ELECT 47UF 25V C31 CAP MONO .1uF 50V 20% Z5U C32 CAP MONO .01UF 50V 20% X7R C33 CAP MONO .1uF 50V 20% Z5U C34 CAP ELECT 100UF 25V C35 CAP MONO .1uF 50V 20% Z5U C36 CAP MONO .1uF 50V 20% Z5U C37 CAP ELECT 100UF 25V C38 CAP MONO .1uF 50V 20% Z5U C39 CAP ELECT 1000UF 25V C40 CAP MPF 0.033UF 100V 10% C41 CAP MPF 0.033UF 100V 10% C42 CAP ELECT 220UF 50V 20% C43 CAP MONO 100PF 100V 10% NPO C44 CAP ELECT 47UF 25V C45 CAP MONO .1uF 50V 20% Z5U C46 CAP MONO .1uF 50V 20% Z5U C47 CAP ELECT 3300UF 35V C48 CAP ELECT 3300UF 35V C49 CAP ELECT 3300UF 35V C50 CAP ELECT 3300UF 35V C51 CAP MONO .01UF 50V 20% X7R C52 CAP MONO .1uF 50V 20% Z5U C53 CAP MONO .1uF 50V 20% Z5U C54 CAP MONO .1uF 50V 20% Z5U C55 CAP MONO .1uF 50V 20% Z5U C56 CAP MONO .1uF 50V 20% Z5U C57 CAP ELECT 220UF 50V 20% C58 CAP ELECT 47UF 50V C59 CAP ELECT 220UF 25V AUDIO
C60 C61 C62 C63 C64 C65 C66 C67 C68 C69 C70 C71 C72 C73 C74 C75 C76 C77 C78 C79 C80 C81 C82 C83 C84 C85 C86 C87 C88 C89 C90 C91 C92 C93 C94 C95 C96 C97 C98 C99 C100 C101 C102 C103 C104 C105 C106 C107 C108 C109 C110 C111 C112 C113 C114 C115 C116 C117 C118 C119 C120 C121 C122 C123
CAP ELECT 220UF 25V AUDIO CAP ELECT 220UF 25V AUDIO CAP ELECT 220UF 25V AUDIO CAP ELECT 220UF 25V AUDIO CAP ELECT 47UF 50V CAP ELECT 220UF 25V AUDIO CAP ELECT 10UF 16V 4X5 CASE CAP ELECT 10UF 16V 4X5 CASE CAP ELECT 10UF 16V 4X5 CASE CAP ELECT 10UF 16V 4X5 CASE CAP ELECT 10UF 16V 4X5 CASE CAP ELECT 10UF 16V 4X5 CASE CAP ELECT 10UF 16V 4X5 CASE CAP ELECT 10UF 16V 4X5 CASE CAP ELECT 47UF 16V 6.3X5 CASE CAP ELECT 47UF 16V 6.3X5 CASE CAP ELECT 100UF 16V 5MM CAP ELECT 47UF 16V 6.3X5 CASE CAP ELECT 47UF 16V 6.3X5 CASE CAP ELECT 100UF 16V 5MM CAP ELECT 47UF 16V 6.3X5 CASE CAP ELECT 47UF 16V 6.3X5 CASE CAP ELECT 100UF 16V 5MM CAP ELECT 47UF 16V 6.3X5 CASE CAP ELECT 47UF 16V 6.3X5 CASE CAP ELECT 100UF 16V 5MM CAP ELECT 10UF 16V 4X5 CASE CAP ELECT 10UF 16V 4X5 CASE CAP ELECT 10UF 16V 4X5 CASE CAP ELECT 10UF 16V 4X5 CASE CAP ELECT 10UF 16V 4X5 CASE CAP ELECT 10UF 16V 4X5 CASE CAP ELECT 10UF 16V 4X5 CASE CAP ELECT 10UF 16V 4X5 CASE CAP ELECT 10UF 16V 4X5 CASE CAP ELECT 10UF 16V 4X5 CASE CAP ELECT 10UF 16V 4X5 CASE CAP ELECT 10UF 16V 4X5 CASE CAP ELECT 10UF 16V 4X5 CASE CAP ELECT 10UF 16V 4X5 CASE CAP ELECT 10UF 16V 4X5 CASE CAP ELECT 10UF 16V 4X5 CASE CAP ELECT 47UF 16V 6.3X5 CASE CAP ELECT 47UF 16V 6.3X5 CASE CAP ELECT 100UF 16V 5MM CAP ELECT 47UF 16V 6.3X5 CASE CAP ELECT 47UF 16V 6.3X5 CASE CAP ELECT 100UF 16V 5MM CAP ELECT 47UF 16V 6.3X5 CASE CAP ELECT 47UF 16V 6.3X5 CASE CAP ELECT 100UF 16V 5MM CAP ELECT 47UF 16V 6.3X5 CASE CAP ELECT 47UF 16V 6.3X5 CASE CAP ELECT 100UF 16V 5MM CAP ELECT 10UF 16V 4X5 CASE CAP ELECT 10UF 16V 4X5 CASE CAP ELECT 10UF 16V 4X5 CASE CAP ELECT 10UF 16V 4X5 CASE CAP ELECT 10UF 16V 4X5 CASE CAP ELECT 10UF 16V 4X5 CASE CAP ELECT 10UF 16V 4X5 CASE CAP ELECT 10UF 16V 4X5 CASE CAP MONO 100PF 100V 10% NPO CAP MONO 100PF 100V 10% NPO
066414 066414 066414 066414 066215 066414 066382 066382 066382 066382 066382 066382 066382 066382 066380 066380 066539 066380 066380 066539 066380 066380 066539 066380 066380 066539 066382 066382 066382 066382 066382 066382 066382 066382 066382 066382 066382 066382 066382 066382 066382 066382 066380 066380 066539 066380 066380 066539 066380 066380 066539 066380 066380 066539 066382 066382 066382 066382 066382 066382 066382 066382 061300 061300
C124 C125 C126 C127 C128 C129 C130 C131 C132 C133 C134 C135 C136 C137 C138 C139 C140 C141 C142 C143 C144 C145 C146 C147 C148 C149 C150 C151 C152 C153 C154 C155 C156 C157 C158 C159 C160 C161 C162 C163 C164 C165 C166 C167 C168 C169 C170 C171 C172 C173 C174 C175 D1 D2 D3 D4 D5 D6 D7 D8 D9 D10 D11 D12
CAP MONO 100PF 100V 10% NPO CAP MONO 100PF 100V 10% NPO CAP MONO 100PF 100V 10% NPO CAP MONO 100PF 100V 10% NPO CAP ELECT 47UF 25V CAP ELECT 47UF 25V CAP ELECT 47UF 25V CAP ELECT 47UF 25V CAP MONO .1uF 50V 20% Z5U CAP MONO .1uF 50V 20% Z5U CAP ELECT 10UF 100VDC CAP ELECT 10UF 100VDC CAP ELECT 10UF 100VDC CAP ELECT 10UF 100VDC CAP ELECT 10UF 100VDC CAP ELECT 10UF 100VDC CAP MONO .1uF 50V 20% Z5U CAP MONO .1uF 50V 20% Z5U CAP MONO .1uF 50V 20% Z5U CAP MONO .1uF 50V 20% Z5U CAP POLYPROP 4700PF 2.5% 63VDC CAP POLYPROP 4700PF 2.5% 63VDC CAP POLYPROP 4700PF 2.5% 63VDC CAP POLYPROP 4700PF 2.5% 63VDC CAP POLYPROP 470PF 5% 100VDC CAP POLYPROP 470PF 5% 100VDC CAP POLYPROP 470PF 5% 100VDC CAP POLYPROP 470PF 5% 100VDC CAP POLYPROP .0015UF 5% 100VDC CAP POLYPROP .0015UF 5% 100VDC CAP POLYPROP .0015UF 5% 100VDC CAP POLYPROP .0015UF 5% 100VDC CAP MONO .1uF 50V 20% Z5U CAP ELECT 10UF 100VDC CAP ELECT 10UF 100VDC CAP MONO .1uF 50V 20% Z5U CAP MPF 0.1UF 5% 63VDC CAP MPF 0.1UF 5% 63VDC CAP POLYPROP 680PF 2.5% 100VDC CAP POLYPROP 680PF 2.5% 100VDC CAP POLYPROP 680PF 2.5% 100VDC CAP POLYPROP 680PF 2.5% 100VDC CAP MPF 0.1UF 5% 63VDC CAP MPF 0.1UF 5% 63VDC CAP MPF 0.1UF 5% 63VDC CAP MPF 0.1UF 5% 63VDC CAP ELECT 47UF 25V CAP ELECT 47UF 25V CAP ELECT 47UF 25V CAP ELECT 47UF 25V CAP ELECT 47UF 25V CAP ELECT 47UF 25V DIODE RECTIFIER DIODE RECTIFIER DIODE SILICON DIODE RECTIFIER DIODE RECTIFIER DIODE RECTIFIER DIODE RECTIFIER DIODE RECTIFIER DIODE RECTIFIER DIODE RECTIFIER DIODE RECTIFIER DIODE RECTIFIER
061300 061300 061300 061300 066413 066413 066413 066413 061305 061305 066411 066411 066411 066411 066411 066411 061305 061305 061305 061305 064390 064390 064390 064390 064370 064370 064370 064370 064369 064369 064369 064369 061305 066411 066411 061305 064325 064325 064389 064389 064389 064389 064325 064325 064325 064325 066413 066413 066413 066413 066413 066413 070131 070131 070047 070131 070131 070131 070131 070131 070131 070131 070131 070131
25
26
PARTS LIST con't
D13 D14 D15 D16 D17 D18 D19 D20 D21 D22 D23 D24 D25 D26 D27 D28 D29 D30 D31 D32 D33 D34 D35 D36 D37 D38 D39 D40 D41 F1 FN1 FN2 FN3 FN4 FN5 HS2 HS3 HS4 HS5 J1 J2 J3 J4 J5 J6 J7 J8 J9 J10 J11 J12 J13 J14 J15 J16 J17 J18 J19 J20 J21 DIODE SILICON DIODE SILICON DIODE RECTIFIER DIODE ZENER 6.2V 5% 500MW DIODE SILICON DIODE SILICON DIODE SILICON DIODE ZENER 30V 1/2W 5% DIODE SILICON DIODE FAST RECOVER DIODE FAST RECOVER DIODE FAST RECOVER DIODE FAST RECOVER DIODE FAST RECOVER DIODE FAST RECOVER DIODE FAST RECOVER DIODE FAST RECOVER DIODE FAST RECOVER DIODE FAST RECOVER DIODE FAST RECOVER DIODE FAST RECOVER DIODE FAST RECOVER DIODE FAST RECOVER DIODE FAST RECOVER DIODE FAST RECOVER DIODE FAST RECOVER DIODE FAST RECOVER DIODE SILICON DIODE SILICON 0.5A 5x20 fuse IEC FILTER EMI FILTER EMI FILTER EMI FILTER EMI FILTER EMI HEATSINK TO-220 HEATSINK TO-220 HEATSINK TO-220 HEATSINK TO-220 XLR FEMALE HORIZ PCB WITH LATCH JACK RCA ORANGE WITH GOLD JACK RCA ORANGE WITH GOLD JACK RCA ORANGE WITH GOLD 6 PIN HEADER CONN 23 PIN FFC BLADE FASTON W/FEET BLADE FASTON W/FEET CONN PCB MOUNT POWER RED CONN PCB MOUNT POWER RED CONN PCB MOUNT POWER RED CONN PCB MOUNT POWER RED CONN 12 PIN FFC HEADER 8 PIN MTA-156 JACK HEADPHONE STEREO 1/8IN JACK HEADPHONE STEREO 1/8IN JACK HEADPHONE STEREO 1/8IN JACK HEADPHONE STEREO 1/8IN 10 PIN HEADER RECEPTACLE XLR MALE JACK PHONO DUAL WHT/RED 070047 070047 070131 070085 070047 070047 070047 070161 070047 070156 070156 070156 070156 070156 070156 070156 070156 070156 070156 070156 070156 070156 070156 070156 070156 070156 070156 070047 070047 089092 180057 180057 180057 180057 180057 080017 080017 080017 080017 117814 117798 117798 117798 117828 117715 117708 117708 117719 117719 117719 117719 117720 117717 117759 117759 117759 117759 117829 117686 117692
J22 K1 K2 K3 K4 K5 K6 K7 K8 K9 K10 K11 L1 L2 L3 L4 L5 L6 L7 L8 L9 L10 L11 L12 OPT1 OPT2 OPT3 Q1 Q2 Q3 Q4 Q5 Q6 Q7 Q8 Q9 Q10 Q11 Q12 Q13 Q14 Q15 Q16 Q17 R1 R2 R3 R4 R5 R6 R7 R8 R9 R10 R11 R12 R13 R14 R15 R16 R17 R18 R19 R20
RECEPTACLE XLR MALE RELAY REED FORM 1C 5V 125 OHM RELAY REED FORM 1C 5V 125 OHM RELAY REED FORM 1C 5V 125 OHM RELAY REED FORM 1C 5V 125 OHM RELAY REED FORM 1A 5V 500 OHMS RELAY REED FORM 1A 5V 500 OHMS RELAY REED FORM 1A 5V 500 OHMS RELAY REED FORM 1A 5V 500 OHMS RELAY REED FORM 1A 5V 500 OHMS RELAY REED FORM 1A 5V 500 OHMS RELAY REED FORM 1A 5V 500 OHMS CHOKE 18uH 5%-10% CHOKE 18uH 5%-10% CHOKE 18uH 5%-10% BEADS FERRITE LEADED BEADS FERRITE LEADED BEADS FERRITE LEADED CHOKE 100UH CHOKE 18uH 5%-10% CHOKE 18uH 5%-10% CHOKE 18uH 5%-10% CHOKE 18uH 5%-10% BEADS FERRITE LEADED Fiber Optic Receiver Fiber Optic Receiver Fiber Optic Receiver TRANSISTOR PNP SILICON TRANSISTOR PNP TRANSISTOR NPN SILICON COUPLER OPTICAL SCHMITT OUTPUT TRANSISTOR PNP SILICON TRANSISTOR NPN TRANSISTOR PNP TRANSISTOR NPN TRANSISTOR PNP TRANSISTOR NPN TRANSISTOR PNP TRANSISTOR NPN TRANSISTOR PNP TRANSISTOR NPN TRANSISTOR PNP TRANSISTOR NPN TRANSISTOR PNP RES MF 75 OHM 1% 1/4W RES MF 110 OHM 1% 1/4W RES MF 75 OHM 1% 1/4W RES MF 47.5K 1% 1/4W RES MF 47.5K 1% 1/4W RES MF 75 OHM 1% 1/4W RES MF 2.87K 1% 1/4W RES MF 47.5K 1% 1/4W RES MF 221 OHM 1% 1/4W RES MF 47.5K 1% 1/4W RES MF 221 OHM 1% 1/4W RES MF 221 OHM 1% 1/4W RES MF 221 OHM 1% 1/4W RES MF 221 OHM 1% 1/4W RES NETWORK 9X-1-223 RES MF 221 OHM 1% 1/4W RES MF 221 OHM 1% 1/4W RES MF 221 OHM 1% 1/4W RES MF 221 OHM 1% 1/4W RES MF 221 OHM 1% 1/4W
117686 087056 087056 087056 087056 087050 087050 087050 087050 087050 087050 087050 122224 122224 122224 076019 076019 076019 122312 122224 122224 122224 122224 076019 058156 058156 058156 132172 132224 132171 131023 132172 132268 132267 132268 132267 132268 132267 132268 132267 132268 132267 132268 132267 144444 144489 144444 144108 144108 144444 144142 144108 144172 144108 144172 144172 144172 144172 144238 144172 144172 144172 144172 144172
R21 R22 R23 R24 R25 R26 R27 R28 R29 R30 R31 R32 R33 R34 R35 R36 R37 R38 R39 R40 R41 R42 R43 R44 R45 R46 R47 R48 R49 R50 R51 R52 R53 R54 R55 R56 R57 R58 R59 R60 R61 R62 R63 R64 R65 R66 R67 R68 R69 R70 R71 R72 R73 R74 R75 R76 R77 R78 R79 R80 R81 R82 R83 R84
RES MF 332 OHM 1% 1/4W RES MF 221 OHM 1% 1/4W RES MF 221 OHM 1% 1/4W RES MF 221 OHM 1% 1/4W RES MF 2.21 OHM 1/4W 1% RES MF 221 OHM 1% 1/4W RES MF 22.1K 1% 1/4W RES MF 1.5K 1% 1/4W RES MF 10 OHM 1% 1/4W RES MF 22.1K 1% 1/4W RES MF 4.75K 1% 1/4W RES MF 221 OHM 1% 1/4W RES MF 221 OHM 1% 1/4W RES MF 221 OHM 1% 1/4W RES MF 100K 1% 1/4W RES MF 47.5K 1% 1/4W RES MF 475 OHM 1% 1/4W RES MF 221 OHM 1% 1/4W RES MF 475 OHM 1% 1/4W PTC RESETTABLE FUSE PTC RESETTABLE FUSE RES FP 10 OHM 5% 1/4W RES MF 47.5K 1% 1/4W RES CF 10 OHM 5% 1/2W RES MF 806 OHM 1% 1/4W RES MF 475K 1% 1/4W RES MF 47.5K 1% 1/4W RES MF 10K 1% 1/4W RES MF 562 OHM 1% 1/4W RES MF 1K 1% 1/4W RES MF 10K 1% 1/4W RES MF 22.1K 1% 1/4W RES MF 22.1K 1% 1/4W RES MF 47.5 OHM 1% 1/4W RES MF 1.5K 1% 1/4W RES MF 47.5 OHM 1% 1/4W RES MF 47.5 OHM 1% 1/4W RES MF 10K 1% 1/4W RES MF 22.1 OHM 1% 1/4W RES MF 22.1 OHM 1% 1/4W RES MF 22.1 OHM 1% 1/4W RES MF 47.5 OHM 1% 1/4W RES MF 100K 1% 1/4W RES MF 100K 1% 1/4W RES MF 100K 1% 1/4W RES MF 100K 1% 1/4W RES MF 1.21K 1% 1/4W RES MF 1.21K 1% 1/4W RES MF 1.21K 1% 1/4W RES MF 1.21K 1% 1/4W RES MF 100K 1% 1/4W RES MF 100K 1% 1/4W RES MF 100K 1% 1/4W RES MF 100K 1% 1/4W RES MF 1.5K 1% 1/4W RES MF 1.5K 1% 1/4W RES MF 1.5K 1% 1/4W RES MF 1.5K 1% 1/4W RES MF 2K 1% 1/4W RES MF 2K 1% 1/4W RES MF 2K 1% 1/4W RES MF 2K 1% 1/4W RES MF 1.5K 1% 1/4W RES MF 1.5K 1% 1/4W
144446 144172 144172 144172 144378 144172 144187 144128 144157 144187 144097 144172 144172 144172 144113 144108 144086 144172 144086 144488 144488 137025 144108 141165 144089 144364 144108 144053 144408 144090 144053 144187 144187 144442 144128 144442 144442 144053 144160 144160 144160 144442 144113 144113 144113 144113 144191 144191 144191 144191 144113 144113 144113 144113 144128 144128 144128 144128 144094 144094 144094 144094 144128 144128
27
28
MDA1000
PARTS LIST con't
R85 R86 R87 R88 R89 R90 R91 R92 R93 R94 R95 R96 R97 R98 R99 R100 R101 R102 R103 R104 R105 R106 R107 R108 R109 R110 R111 R112 R113 R114 R115 R116 R117 R118 R119 R120 R121 R122 R123 R124 R125 R126 R127 R128 R129 R130 R131 R132 R133 R134 R135 R136 R137 R138 R139 R140 R141 R142 R143 R144 RES MF 1.5K 1% 1/4W RES MF 1.5K 1% 1/4W RES MF 3.74K 1% 1/4W RES MF 3.74K 1% 1/4W RES MF 3.4K 1% 1/4W RES MF 3.4K 1% 1/4W RES MF 3.74K 1% 1/4W RES MF 3.74K 1% 1/4W RES MF 3.4K 1% 1/4W RES MF 3.4K 1% 1/4W RES MF 1.69K 1% 1/4W RES MF 1.69K 1% 1/4W RES MF 1.69K 1% 1/4W RES MF 1.69K 1% 1/4W RES MF 4.75K 1% 1/4W RES MF 10 OHM 1% 1/4W RES MF 4.75K 1% 1/4W RES MF 4.75K 1% 1/4W RES MF 4.75K 1% 1/4W RES MF 10 OHM 1% 1/4W RES MF 10 OHM 1% 1/4W RES MF 10 OHM 1% 1/4W RES MF 10 OHM 1% 1/4W RES MF 10 OHM 1% 1/4W RES MF 4.75K 1% 1/4W RES MF 4.75K 1% 1/4W RES MF 4.75K 1% 1/4W RES MF 4.75K 1% 1/4W RES MF 4.75K 1% 1/4W RES MF 4.75K 1% 1/4W RES MF 4.75K 1% 1/4W RES MF 4.75K 1% 1/4W RES MF 10 OHM 1% 1/4W RES MF 10 OHM 1% 1/4W RES MF 10 OHM 1% 1/4W RES MF 10 OHM 1% 1/4W RES MF 10 OHM 1% 1/4W RES MF 10 OHM 1% 1/4W RES MF 10 OHM 1% 1/4W RES MF 10 OHM 1% 1/4W RES MF 47.5K 1% 1/4W RES MF 47.5K 1% 1/4W RES MF 47.5K 1% 1/4W RES MF 47.5K 1% 1/4W RES MF 47.5K 1% 1/4W RES MF 47.5K 1% 1/4W RES MF 22.1 OHM 1% 1/4W RES MF 22.1 OHM 1% 1/4W RES MF 22.1 OHM 1% 1/4W RES MF 22.1 OHM 1% 1/4W RES MF 22.1 OHM 1% 1/4W RES MF 22.1 OHM 1% 1/4W RES MF 47.5K 1% 1/4W RES MF 47.5K 1% 1/4W RES MF 47.5K 1% 1/4W RES MF 47.5K 1% 1/4W RES MF 47.5K 1% 1/4W RES MF 47.5K 1% 1/4W RES MF 4.02K 1% 1/4W RES MF 1K 1% 1/4W 144128 144128 144384 144384 144383 144383 144384 144384 144383 144383 144382 144382 144382 144382 144097 144157 144097 144097 144097 144157 144157 144157 144157 144157 144097 144097 144097 144097 144097 144097 144097 144097 144157 144157 144157 144157 144157 144157 144157 144157 144108 144108 144108 144108 144108 144108 144160 144160 144160 144160 144160 144160 144108 144108 144108 144108 144108 144108 144096 144090
R145 R146 R147 R148 R149 R150 R151 R152 R153 RL1 RL2 T1 U1 U2 U3 U4 U5 U6 U7 U8 U9 U10 U11 U12 U13 U14 U15 U16 U17 U18 U19 U20 U21 U22 U23 U24 U25 U26 U27 U28 U29 U30 U31 U32 U33 U34 U35 Y1
RES MF 1K 1% 1/4W RES MF 1K 1% 1/4W RES MF 1K 1% 1/4W RES MF 1K 1% 1/4W RES MF 1K 1% 1/4W RES MF 1K 1% 1/4W RES MF 1K 1% 1/4W RES MF 47.5 OHM 1% 1/4W RES MF 475 OHM 1% 1/4W RELAY 5V DPST RELAY 5V DPST TRANSFORMER DIGITAL INTERFACE DIFFERENTIAL RECEIVER DIGITAL INTERFACE RECEIVER SINGLE 2-INPUT NOR GATE DUAL D-FLIP-FLOP SINGLE 2-INPUT AND GATE PROGRAMMED VERSION OF 133495 SINGLE 2-INPUT NAND GATE OCTAL BUFFER WITH 3 STATE SINGLE 2-INPUT AND GATE REGULATOR 3.3V LOW DROP IC REGULATOR 5V 1.5A LOW DROP IC AND 2 INPUT X 4 IC MONOSTB MULTIVIB X 2 IC REGULATOR 3.3V LOW DROPOUT IC REGULATOR 5V 1.5A LOW DROP -5V LOW DROPOUT REGULATOR IC REGULATOR 12V IC REGULATOR -12V IC D/A CONVERTER 24 BIT IC D/A CONVERTER 24 BIT IC D/A CONVERTER 24 BIT IC D/A CONVERTER 24 BIT IC D/A CONVERTER 24 BIT IC D/A CONVERTER 24 BIT IC D/A CONVERTER 24 BIT IC D/A CONVERTER 24 BIT IC OP AMP DUAL FET INPUT IC OP AMP DUAL FET INPUT STEREO VOLUME CONTROL STEREO VOLUME CONTROL IC DUAL OPERATIONAL AMPLIFIER IC DUAL OPERATIONAL AMPLIFIER IC DUAL OPERATIONAL AMPLIFIER IC DUAL OPERATIONAL AMPLIFIER IC DUAL OPERATIONAL AMPLIFIER RESONATOR CERAMIC 6.0MHZ W/CAP
144090 144090 144090 144090 144090 144090 144090 144442 144086 087074 087074 159285 133485 133483 133500 133499 133502 133496 133501 133503 133502 133464 133365 133175 133182 133393 133365 133493 133156 133155 133392 133392 133392 133392 133392 133392 133392 133392 133432 133432 133505 133505 133260 133260 133260 133260 133260 180039
R2 S1 S2
RES MF 75 OHM 1% 1/4W SWITCH PB TACT SWITCH PB TACT
144444 150058 150058
5
DISPLAY PCB 049989 C1 CAP ELECT 10UF 16V 4X5 CASE C2 CAP MONO .1uF 50V 20% Z5U C3 CAP ELECT 10UF 50V LOW ESR C4 CAP MONO 22PF 200V 10% NPO C5 CAP MONO .1uF 50V 20% Z5U C6 CAP ELECT 47UF 16V 6.3X5 CASE DS1 LED GREEN 5MM HI-INT VF[V] 3.5 DS2 LED GREEN 5MM HI-INT VF[V] 3.5 DS3 LED GREEN 5MM HI-INT VF[V] 3.5 DS4 16 Digits VF display J1 CONN 23 PIN FFC J2 CONN 12 PIN FFC L1 CHOKE 18uH 5%-10% L2 BEADS FERRITE LEADED L3 BEADS FERRITE LEADED R1 RES MF 332 OHM 1% 1/4W R2 RES MF 100 OHM 1% 1/4W R3 RES MF 100 OHM 1% 1/4W R4 RES MF 100 OHM 1% 1/4W R5 RES MF 100 OHM 1% 1/4W R6 RES MF 47.5K 1% 1/4W R7 RES NETWORK 3X22K BUSSED R8 RES MF 5.62K OHM 1% 1/4W S1 16 ENCODER S2 ENCODER OPTICAL ROTARY U1 VFD DRIVER
066382 061305 066437 061298 061305 066380 058165 058165 058165 058169 117715 117720 122224 076019 076019 144446 144196 144196 144196 144196 144108 144252 144447 129294 146246 133442
6
3
UPSAMPLING MODULE 049999
4
KEYBOARD PCB 049990 C1 CAP ELECT 10UF 16V 4X5 CASE C2 CAP ELECT 47UF 16V 6.3X5 CASE C3 CAP MONO .1uF 50V 20% Z5U DS1 LED SQUARE RED DS2 LED GREEN 5MM HI-INT VF[V] 3.5 DS3 LED SQUARE RED J1 CONN 12 PIN FFC MT1 SENSOR IR 38KHZ Q1 TRANSISTOR NPN R1 RES MF 10 OHM 1% 1/4W
066382 066380 061305 058109 058165 058109 117720 121046 132223 144157
DATAPORT PCB 049991 C1 CAP MONO .1uF 50V 20% Z5U C2 CAP ELECT 10UF 50V J1 CONN 12 PIN FFC J2 JACK HEADPHONE STEREO 1/8IN J3 JACK HEADPHONE STEREO 1/8IN J4 JACK HEADPHONE STEREO 1/8IN J5 JACK HEADPHONE STEREO 1/8IN J6 JACK HEADPHONE STEREO 1/8IN J7 JACK HEADPHONE STEREO 1/8IN J8 JACK HEADPHONE STEREO 1/8IN L1 BEADS FERRITE LEADED R1 RES MF 100K 1% 1/4W R2 RES NETWORK 3X22K BUSSED R3 RES MF 100 OHM 1% 1/4W R4 RES MF 100 OHM 1% 1/4W R5 RES MF 100 OHM 1% 1/4W R6 RES MF 100 OHM 1% 1/4W R7 RES MF 100 OHM 1% 1/4W R8 RES MF 100 OHM 1% 1/4W R9 RES MF 100 OHM 1% 1/4W R11 RES MF 47.5 OHM 1% 1/4W SP1 BRACKET PCB CARD MOUNTING SP2 BRACKET PCB CARD MOUNTING U1 IC SHFT REG SER-PAR U2 LB1720 DRIVER ARRAY
061305 066445 117720 117759 117759 117759 117759 117759 117759 117759 076019 144113 144252 144196 144196 144196 144196 144196 144196 144196 144442 003611 003611 133186 133180
29
30
EXPLODED VIEW and PARTS LIST
Ref No. 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
Part No. 016499 016500 016498 017517 017531 078033 148073 094016 018722 018721 018715 100342 092440 005358 005360 100276 101074 049990 017933 017907 017901 017934 049989 101222 005359 159343 117800 102003 018723 005364 094192
Description CENTER GLASS PANEL RIGHT GLASS PANEL LEFT GLASS PANEL PUSHBUTTON ASSY BLK PUSHBUTTON ASSY RED O-RING SWITCH DPDT ROCKER TAPE VINYL FOAM 1/16 X 1/4 EXTRUSION CENTER 5" END CAP 5" TOP/BOTTOM END CAP SCREW 6-32 X 3/8 FILLISTER HD DISPLAY FILTER PLATE BACK GAP PLATE SCREW MACH SEMS 6-32 X 5/16 PH PN SCREW TAPPING 4-40 X 1/4 PH PN ASSY KEYBOARD PCB CIRCUIT BOARD SUPPORT TITLE/PUSHBUTTON BACKLIGHT LOGO/PUSHBUTTON BACKLIGHT CIRCUIT BOARD SUPPORT ASSY DISPLAY PCB SCREW TT SEMS 6-32 X 1/4 PH PN SUBPANEL TRANSFORMER R-CORE POWER MTA CONN 8 PIN .156 NUT MACH 6-32 W/LOCK TOP PANEL TOP STRIP TAPE DOUBLE SIDED 1/2" 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 005396 016501 094442 005365 102064 049619 050000 104017 101232 101196 049988 049999 126960 126961 126962 005366 049991 117755 102001 102002 005357 101197 100356 005361 018724 101109 005363 017937 104083 100159 GOLD STRIP GLASS TOP COVER FOAM PAD TRAY NUT CAP 6-32 ASSY KNOB 40 METRIC W/O INDEX ASSY KNOB 40 AMER W/O INDEX BLK FELT WASHER 3/4 X 1/4 X 1/16 SCREW 6-32 X 1/4 PHIL FLAT SCREW TAP SEMS 6-32 X 1/4 PH PN ASSY MAIN PCB ASSY UPSAMPLING PCB DECAL UPSAMPLING DECAL D/A CONVERTER LEFT DECAL D/A CONVERTER RIGHT PCB BRACE ASSY DATAPORT PCB RECEPTACLE INPUT & LINE FILTER NUT KEP 4-40 CADMIUM PLATE NUT MACH 6-32 SELF-LOCK REAR PANEL SCREW HI-LO 6-32 X 1/4 PH PN SCREW 10-32 X 1/2 LOW SHCS SIDE PANEL SIDE PANEL SCREW 6-32 X 5/16 PH PN BLK BOTTOM COVER FOOT WASHER #10 PLATED 104062 SCREW MACH 10-32 X 3/4 PH PN BLK
31
32
MDA1000
REPACKING INSTRUCTIONS
33
D/A CONVERTER
SERVICE MANUAL
The continuous improvement of its products is the policy of McIntosh Laboratory Incorporated, who reserve the right to improve design without notice. Because of the constant upgrading of McIntosh products' circuitry and components, the Company cannot insure, and does not warrant, the accuracy of the within schematic material, which is intended for information only. McINTOSH LABORATORY, INC., 2 CHAMBERS STREET, BINGHAMTON, NEW YORK 13903 Printed in U.S.A. Part Number 040899