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Yamaha HS80M Service Manual

Hs series powered monitor speaker.
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011806
PA
HS80M: 200510-47250
HS50M: 200510-26250
POWERED MONITOR SPEAKER
HS80M/HS50M
SERVICE MANUAL
I CONTENTS
HS80M SPECIFICATIONS
HS50M SPECIFICATIONS
DIMENSIONS
PANEL LAYOUT
CIRCUIT BOARD LAYOUT
HS80M DISASSEMBLY PROCEDURE
HS50M DISASSEMBLY PROCEDURE
CIRCUIT BOARDS
HS80M INSPECTIONS
HS50M INSPECTIONS
BLOCK DIAGRAM
OVERALL CIRCUIT DIAGRAM
PARTS LIST
Copyright (c) Yamaha Corporation. All rights reserved. PDF
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HAMAMATSU, JAPAN
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Printed in Japan '05.12

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   Summary of Contents for Yamaha HS80M

  • Page 1 ....11 CIRCUIT BOARDS ........14 HS80M INSPECTIONS ..........15 HS50M INSPECTIONS ..........16 BLOCK DIAGRAM OVERALL CIRCUIT DIAGRAM PARTS LIST 011806 HAMAMATSU, JAPAN HS80M: 200510-47250 Copyright (c) Yamaha Corporation. All rights reserved. PDF Printed in Japan ’05.12 HS50M: 200510-26250...
  • Page 2 IMPOR TANT NOTICE This manual has been provided for the use of authorized Yamaha Retailers and their ser vice personnel. It has been assumed that basic service procedures inherent to the industry, and more specifically Yamaha Products, are already known and under- stood by the users, and have therefore not been restated.
  • Page 3: Hs80m Specifications

    HS80M/HS50M HS80M HS80M SPECIFICATIONS General specifications Type ..........Biamp 2-way Powered speaker Crossover Frequency ..... 2 kHz Overall Frequency Response ..42 Hz-20 kHz (-10 dB) Dimensiones (W x H x D) ....250 x 390 x 332 mm (9-13/16” x 15-3/8” x 13-1/6”) Weight ..........
  • Page 4: Hs50m Specifications

    HS80M/HS50M HS50M HS50M SPECIFICATIONS General specifications Type ..........Biamp 2-way Powered speaker Crossover Frequency ..... 3 kHz Overall Frequency Response ..55 Hz-20 kHz (-10 dB) Dimensiones (W x H x D) ....165 x 268 x 222 mm (6-1/2” x 10-9/16” x 8-3/4”) Weight ..........
  • Page 5: Dimensions

    HS80M/HS50M DIMENSIONS • HS80M 250 (9-13/16") 332 (13-1/16") Unit: mm (inch) • HS50M 165 (6-1/2") 222 (8-3/4") Unit: mm (inch)
  • Page 6: Panel Layout

    HS80M/HS50M PANEL LAYOUT +4dB LEVEL -10dB INPUT HS80M HS50M MID EQ MID EQ +2dB +2dB +2dB MID EQ -2dB -2dB -2dB 2kHz 2kHz ROOM CONTROL ROOM CONTROL ROOM -2dB CONTROL -4dB -2dB -2dB -4dB -4dB +2dB HIGH 500Hz 500Hz TRIM...
  • Page 7: Circuit Board Layout

    HS80M/HS50M CIRCUIT BOARD LAYOUT • HS80M INPUT (LF 3/4) (LF 2/4) AC INLET TRANS (LF 1/4) (LF 4/4) • HS50M INPUT (LF 3/4) (LF 2/4) TRANS (LF 4/4) AC INLET (LF 1/4)
  • Page 8: Hs80m Disassembly Procedure

    HS80M/HS50M HS80M HS80M DISASSEMBLY PROCEDURE Woofer (Time required: about 1 minute) Remove the six (6) screws marked [55]. The woofer ring can then be removed. (Fig. 1) Remove the six (6) screws marked [40]. The woofer can then be removed. (Fig. 1)
  • Page 9 HS80M/HS50M HS80M Unsolder soldered parts (22 locations) on the pat- tern side of IC801 and IC802. (Photo. 1) Remove the two (2) screws marked [A] and remove the heat sink with IC801 and IC802. (Photo. 1) Remove the two (2) screws marked [B] and remove IC801 and IC802.
  • Page 10 HS80M/HS50M HS80M TRANS Circuit Board and Power Trans- former (Time required: about 2 minutes) Remove the rear panel assembly. (See procedure 3.) Remove the four (4) screws marked [130]. The TRANS circuit board with the power transformer can then be removed.
  • Page 11: Hs50m Disassembly Procedure

    HS80M/HS50M HS50M HS50M DISASSEMBLY PROCEDURE Woofer (Time required: about 1 minute) Remove the four (4) screws marked [55]. The woofer ring can then be removed. (Fig. 1) Remove the four (4) screws marked [40]. The woofer can then be removed. (Fig. 1)
  • Page 12 HS80M/HS50M HS50M Unsolder soldered parts (22 locations) on the pat- tern side of IC801 and IC802. (Photo. 1) Remove the two (2) screws marked [A] and remove the heat sink with IC801 and IC802. (Photo. 1) Remove the two (2) screws marked [B] and remove IC801 and IC802.
  • Page 13 HS80M/HS50M HS50M TRANS Circuit Board and Power Trans- former (Time required: about 2 minutes) Remove the rear panel assembly. (See procedure 3.) Remove the four (4) screws marked [130]. The TRANS circuit board with the power transformer can then be removed.
  • Page 14: Circuit Boards

    HS80M/HS50M CIRCUIT BOARDS • HS80M / HS50M INPUT CN603: CN602: to INPUT-CB101 to POWER INDICATOR- CN604 100Hz CN601: to WOOFER and TWEETER 80Hz FLAT -2dB +2dB -4dB -2dB -2dB +2dB Component side CN805: WOOFER to TRANS-CN804 CN604: TWEETER to AMP-CN603 * 1: IC601 and 602 are not components of the AMP P.C.B..
  • Page 15: Hs80m Inspections

    HS80M/HS50M HS80M HS80M INSPECTION 1. Test conditions (1) Input Signal: PHONE 1 kHz (WF), 10 kHz (TW) (2) Output load: 4 ohms (WF), 8 ohms (TW) (3) AC power supply: AC100 V, 50/60 Hz (J) AC120 V, 60 Hz (U, T)
  • Page 16: Hs50m Inspections

    HS80M/HS50M HS50M HS50M INSPECTION 1. Test conditions (1) Input Signal: PHONE 1 kHz (WF), 10 kHz (TW) (2) Output load: 4 ohms (WF), 8 ohms (TW) (3) AC power supply: AC100 V, 50/60 Hz (J) AC120 V, 60 Hz (U, T)
  • Page 17 CIRCUIT DIAGRAM I CONTENTS BLOCK DIAGRAM ......... 2 OVERALL CIRCUIT DIAGRAM ........3/5 HS80M ..................... 3/4 HS50M ..................... 5/6 Notation for Circuit Diagrams 1. How to identify inter-sheet connectors to page 4: INPUT The page number indicates the destination page.
  • Page 18 INPUT (LF 3/4) (LF 2/4) H.P.F MID EQ ROOM CONTROL INPUT 1 -15V -15V LEVEL +VCC IC602 IC101-1/2 IC101-2/2 IC102-1/2 IC102-2/2 TWEETER INPUT 2 POWER AMP BLUE HIGH TRIM LOW CUT STEP FILTER LOW CUT YELLOW -VCC -15V -15V WOOFER +VCC POWER AMP IC103-1/2...
  • Page 19 HS80M/HS50M HS80M OVERALL CIRCUIT DIAGRAM 1/2 (INPUT) INPUT OP AMP LOW CUT INPUT1 OP AMP OP AMP OP AMP INPUT2 PHONE LEVEL ROOM CONTROL 0 / -2 / -4dB MID EQ 2kHz +2 / 0 / -2dB to AMP, TRANS, AC INLET...
  • Page 20 HS80M/HS50M HS80M OVERALL CIRCUIT DIAGRAM 2/2 (AMP, TRANS, AC INLET) POWER AMP REGULATOR +15V WOOFER LIMITER BLACK BLUE YELLOW POWER AMP TWEETER REGULATOR -15V Distination AC Cord WG261700 U, T WG261800 TRANS H, A, K WG262000 WG261900 POWER TRANSFORMER WG262200 •...
  • Page 21 HS80M/HS50M HS50M OVERALL CIRCUIT DIAGRAM 1/2 (INPUT) INPUT OP AMP LOW CUT INPUT1 OP AMP OP AMP OP AMP INPUT2 PHONE LEVEL ROOM CONTROL 0 / -2 / -4dB MID EQ 2kHz +2 / 0 / -2dB to AMP, TRANS, AC INLET...
  • Page 22 HS80M/HS50M HS50M OVERALL CIRCUIT DIAGRAM 2/2 (AMP, TRANS, AC INLET) POWER AMP REGULATOR +15V WOOFER LIMITER BLACK BLUE YELLOW POWER AMP TWEETER REGULATOR -15V Distination AC Cord WG261700 U, T WG261800 TRANS H, A, K WG262000 WG261900 POWER TRANSFORMER WG262200 •...
  • Page 23: Table Of Contents

    POWERED MONITOR SPEAKER HS80M/HS50M PARTS LIST I CONTENTS OVERALL ASSEMBLY ............2/4 HS80M ....................2 HS50M ....................4 ELECTRICAL PARTS ............3/5 HS80M ....................3 HS50M ....................5 Notes: DESTINATION ABBREVIATIONS Australian model South African model British model Chinese model...
  • Page 24 HS80M/HS50M HS80M HS80M OVERALL ASSEMBLY Rear Panel Assembly Bonded FUSE AC cord (ex. J) SPACER...
  • Page 25: Overall Assembly

    Transformer B,H,CHN H,B,O,K (432226) WG267700 Transformer (432586) WG341300 Bind Head Tapping Screw-S 4x10 (410794) WG266700 Circuit Board HS80M AC INLET J,U,T (WG26630) WG266900 Circuit Board HS80M AC INLET H,B,A,K,O (WG26680) WG341500 Bind Head Screw 3x15 (423328) WG540200 Bind Head Tapping Screw...
  • Page 26: Hs50m

    HS80M/HS50M HS50M HS50M OVERALL ASSEMBLY Bonded Rear Panel Assembly FUSE PLATE AC cord (ex. J)
  • Page 27: Electrical Parts

    HS80M/HS50M PART NO. DESCRIPTION REMARKS REF NO. RANK OVERALL ASSEMBLY HS50M Overall Assembly HS50M J (WF74780) Overall Assembly HS50M U (WF74790) Overall Assembly HS50M H (WF74800) Overall Assembly HS50M B (WF74810) Overall Assembly HS50M A (WF74820) Overall Assembly HS50M K...

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