6. WIRING DIAGRAM .........................12 7. SCHEMATIC DIAGRAMS ...................... 13-16 8. MOUNTING DIAGRAMS AND PARTS LISTS ............... 17-19 9. EXPLODED VIEW AND PARTS LISTS ................. 20 DA-150EH-AM Sold May 2022 onward 10. REPLACING THE REPAIR PARTS ..................21-27 - 1 -...
1. GENERAL DESCRIPTION 2. NOTE ON REPAIR WORK SAFETY TOA's DA-150EH-AM Multichannel Power Amplifier features high power handling capabilities and Follow the instructions below, both to prevent accidents when making repairs and to ensure post-repair commercial-grade durability. It has a rated output of 150 W x 8 channels (100/70V line output). It covers product safety.
MODEL DA-150EH-AM MODEL DA-150EH-AM 3. SPECIFICATIONS Conduct safety inspections following the completion of service. Power Source 110-120 V AC, 50/60 Hz 1.Check that all screws, parts, and wiring removed or changed during servicing have been restored to Amplification System Digital class D their original states.
MODEL DA-150EH-AM MODEL DA-150EH-AM 5. TROUBLE SHOOTING Power indicator (green) is off low voice/no voice Is the power cord Is the input signal cable Plug in the power cord firmly. Connect as instructed in the manual. firmly connected? properly connected?
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MODEL DA-150EH-AM MODEL DA-150EH-AM Protect indicator (red) is on Hum noise Is the output load is within the acceptable range Return the load to normal. Is the case grounding normal? Ground the case properly. and not shorted? Make sure that the vents are not blocked...
MODEL DA-150EH-AM 8. MOUNTING DIAGRAMS AND PARTS LISTS The repair of this machine will be the replacement of the board unit. We do not supply individual parts on the board. • PRE AMP PCB (Part Code : HK19863) - 17 -...
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MODEL DA-150EH-AM • POWER AMP PCB (Part Code : HK21007) - 18 -...
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MODEL DA-150EH-AM • LED PCB (Part Code : HK19860) • US POWER CORD (Part Code : HA00882) • PF PCB (Part Code : HK20265) • FAN (Part Code : HE00105) • FUSE (Part Code : HD00115) • REMOVABLE TERMINAL PLUG (3 PINS) (Part Code : HC01567) •...
MODEL DA-150EH-AM 9. EXPLODED VIEW AND PARTS LISTS Part Code Description MB08879 CHASSIS MA13127 PANEL NI09353 ACRYLIC MI06874 FIXED BRACKET MG00245 COPPER PILLAR HE00105 HC01198 AC INLET MC01700 TOP COVER HK19860 PCB ASSY, LED HK22252 PCB ASSY, PRE AMP HK20265...
MODEL DA-150EH-AM 10. REPLACING THE REPAIR PARTS • REMOVAL PROCEDURE OF THE TOP PANEL OF DA-150EH-AM 1. Remove 11 screws from the top panel. 2. Remove top panel. - 21 -...
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MODEL DA-150EH-AM • REPLACEMENT OF FUSE (Part Code : HD00115) 1. Open the fuse box of rear side of amplifier. (Beside AC inlet) 2. Replace the fuse and close it. While using minus driver etc. - 22 -...
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MODEL DA-150EH-AM • REPLACEMENT OF PRE AMP PCB (Part Code : HK19863) 1. Disconnect 5 cables and remove 4 screws from top of PCB. 2. Replace the PRE AMP PCB and connect 5 cables. 3. Lock the 4 screws back.
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MODEL DA-150EH-AM • REPLACEMENT OF POWER AMP PCB (Part Code : HK21007) 1. Disconnect 4 cables and remove 4 nuts from the heat sink. 2. Replace the POWER AMP PCB and lock the 4 nuts back. 3. Connect 4 cables back.
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MODEL DA-150EH-AM • REPLACEMENT OF LED PCB (Part Code : HK19860) 1. Remove 4 screws from side panel. 2. Remove 3 screws from the bottom. 3. Disconnect 1 cable and remove 8 screws from top of PCB. 4. Replace the LED PCB and connect the cable and lock the screws back.
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MODEL DA-150EH-AM • REPLACEMENT OF PF PCB (Part Code : HK20265) 1. Disconnect 6 cables. 2. Remove 3 screws from top of PCB 3. Replace the PF PCB and connect all cables and lock the screws back. - 26 -...
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MODEL DA-150EH-AM • REPLACEMENT OF FAN (Part Code : HE00105) 1. Disconnect the cable. 2. Remove 2 screws. 3. Replace the FAN and connect cable and lock the screws back. - 27 -...
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