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Yamaha PSR-E373 Service Manual

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PK
001996
-A0
2020.09
SERVICE MANUAL
PSR-E373
n
CONTENTS
SPECIFICATIONS................................................................................... 3
PANEL LAYOUT...................................................................................... 5
CIRCUIT BOARD LAYOUT & WIRING.................................................... 7
BLOCK DIAGRAM................................................................................... 8
DISASSEMBLY PROCEDURE................................................................ 9
CIRCUIT BOARDS................................................................................ 16
DMLCD Circuit Board Check Method.................................................... 22
TEST PROGRAM.................................................................................. 23
BACKUP................................................................................................ 30
INITIALIZATION..................................................................................... 31
SYSTEM BOOTING FLOW CHART...................................................... 32
PARTS LIST
OVERALL CIRCUIT DIAGRAM
© 2020 Yamaha Corporation.
370
YPT-370

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  • Page 1 CIRCUIT BOARD LAYOUT & WIRING............ 7 BLOCK DIAGRAM................... 8 DISASSEMBLY PROCEDURE..............9 CIRCUIT BOARDS................16 DMLCD Circuit Board Check Method............ 22 TEST PROGRAM.................. 23 BACKUP....................30 INITIALIZATION..................31 SYSTEM BOOTING FLOW CHART............32 PARTS LIST OVERALL CIRCUIT DIAGRAM 001996 2020.09 © 2020 Yamaha Corporation.
  • Page 2 IMPORTANT NOTICE This manual has been provided for the use of authorized Yamaha Retailers and their service personnel. It has been assumed that basic service procedures inherent to the industry, and more speci cally Yamaha Products, are already known and understood by the users, and have therefore not been restated.
  • Page 3 PSR-E373/YPT-370 SPECIFICATIONS Product Name Digital Keyboard 945 mm x 369 mm x 118 mm Dimensions (W x D x H) (37-3/16” x 14-1/2” x 4-5/8”) Size/Weight 4.6 kg (10 lb 2 oz) Weight (not including batteries) Keyboard , t f...
  • Page 4 • Footswitch: FC4A/FC5 * The contents of this manual apply to the latest speci cations as of the publishing date. To obtain the latest manual, access the Yamaha website then download the manual le. Since speci cations, equipment or separately sold accessories may not be the same in every locale,...
  • Page 5 PSR-E373/YPT-370 PANEL LAYOUT Front Panel NOTE • The illustrations and displays as shown in this manual are based on the PSR-E373. ❶ ❸ ❼ ❺ ❹ ❽ ❷ ❾ ❻ ⓫ ⓬ ⓭ ⓮ ⓯ ❿ Music Style List Song List...
  • Page 6 PSR-E373/YPT-370 ] (Standby/On) switch ❶ Rear Panel [MASTER VOLUME] dial ❷ [DEMO] button ❸ [METRONOME] button ❹ [TEMPO/TAP] button ❺ In the Lesson mode ❻ PART [L] button [R] button In the Recording mode [REC TRACK 2] button ❻ [REC TRACK 1] button [KEYS TO SUCCESS] button ❼...
  • Page 7 PSR-E373/YPT-370 CIRCUIT BOARD LAYOUT & WIRING 上ケース Assʼy UPPER CASE ASSEMBLY スピーカー （L） スピーカー （R） SPEAKER (L) SPEAKER (R) DMLCD DC-IN 下ケース Assʼy LOWER CASE ASSEMBLY 61L-MK 61H-MK Table 表 結線リスト Wiring assemblies list Connector Unit Name ユニット名 ロケーション Location Parts No.
  • Page 8 PSR-E373/YPT-370 BLOCK DIAGRAM...
  • Page 9 PSR-E373/YPT-370 DISASSEMBLY PROCEDURE Caution: ▪ Be sure to attach the removed filament tape just as it was before removal. Lower Case Assembly (Time required: About 3 minutes) Remove the 5 screws marked [120] and the 9 screws marked [100]. The lower case assembly can then be removed. (Fig.1) When installing the lower case assembly, first tighten the screw marked [100A] and then the remaining screws.
  • Page 10 PSR-E373/YPT-370 DMLCD Circuit Board (Time required: About 6 minutes) Remove the lower case assembly. (See procedure 1) Remove the 12 screws [380A]. The DMLCD circuit board can then be removed. (Fig.2) When installing the DMLCD circuit board, tighten the screws 1 through 2 in numerical order. (Fig.2) After replacing the DMLCD circuit board, execute "Factory Reset"...
  • Page 11 PSR-E373/YPT-370 PNR Circuit Board, PNL Circuit Board, MVR Circuit Board, DC-IN Circuit Board Remove the lower case assembly. (See procedure 1) PNL, MVR Circuit Board (Time required: About 8 minutes) 1. Remove the 2 screws [380B]. The DC-IN circuit board can then be removed. (Fig.2) 2.
  • Page 12 PSR-E373/YPT-370 Speaker Grille (Time required: About 4 minutes each) Remove the lower case assembly. (See procedure 1) Release the 4 claws marked [A] of the SP grille. The SP grille can then be removed. (Fig.1) The right and left SP grilles can be removed in the same manner.
  • Page 13 PSR-E373/YPT-370 Disassembling the keyboard (time required: About 13 minutes) Remove the lower case assembly. (See procedure 1) White keys and black keys 1. The white and black keys are grouped in single octave sets starting from the left side and consist of a total of five sets.
  • Page 14 PSR-E373/YPT-370 フック HOOK Photo1 Circuit Board 61L-MK 1. Remove the C1 to B3 white and black keys. (See Fig.6 and "●White keys and black keys" in procedure 7) 2. Remove the 4 screws marked [100C] and 8 screws marked [100A]. The circuit board 61L-MK can then be removed.
  • Page 15 PSR-E373/YPT-370 Removing the Spring Terminals Spring terminal A and spring terminal B (Time required: About 8 minutes) 1. Remove the lower case assembly. (See procedure 1) 2. Remove the BATT ribbon cable soldered to spring terminals A and B. (Fig.9) 3.

  • Page 16: Table Of Contents

    PSR-E373/YPT-370 CIRCUIT BOARDS CONTENTS PNL with MVR/DC-IN Circuit Board (YJ069C0)........................17 DMLCD Circuit Board (YK716D0)............................18 PNR Circuit Board (YJ069C0)..............................20 61H-MK Circuit Board (X2335D0)............................21 61L-MK Circuit Board (X2336C0)............................. 21 Note: ▪ For details on the circuit board parts, see the Parts List.

  • Page 17: Pnl With Mvr/Dc-In Circuit Board (Yj069C0)

    PSR-E373/YPT-370 PNL with MVR/DC-IN Circuit Board (YJ069C0) to DMLCD to DMLCD -CN301 -CN301 to Speaker Lch to Speaker Lch to DMLCD to DMLCD -CN801 -CN801 to Battery to Battery MASTER VOLUME 全体音量 DC-IN DC-IN Component Side 2NA-ZV85630...

  • Page 18: Dmlcd Circuit Board (Yk716D0)

    PSR-E373/YPT-370 DMLCD Circuit Board (YK716D0) to PNL-CN106 to 61L-MK-CN5 to 61H-MK-CN1 to 61H-MK-CN2 to PNL-CN104 AUX IN PHONES/ TO HOST OUTPUT Component Side 2NA-VCX5040...
  • Page 19 PSR-E373/YPT-370 Pattern Side 2NA-VCX5040...

  • Page 20: Pnr Circuit Board (Yj069C0)

    PSR-E373/YPT-370 PNR Circuit Board (YJ069C0) to DMLCD-CN304 to DMLCD-CN302 to DMLCD-CN302 SUSTAIN SUSTAIN to PN2-CN201 to PN2-CN201 to Speaker Rch to Speaker Rch Component Side 2NA-ZV85630...

  • Page 21: Mk Circuit Board (X2335D0)

    PSR-E373/YPT-370 61H-MK Circuit Board (X2335D0) to DMLCD-CN503 to 61L-MK-CN4 to DMLCD-CN502 Component Side 2NAKB-V869540 61L-MK Circuit Board (X2336C0) to DMLCD-CN501 to 61H-MK-CN3 Component Side 2NAKB-V869520...
  • Page 22 PSR-E373/YPT-370 DMLCD Circuit Board Check Method The DMLCD Circuit Board has the test points for repair check purposes. Check the test points on the DMLCD Circuit Board when the following problems happen. Problems and Test points ▪ No display although turning on the power ⇒ Check the test points from No.1 to 6 sequentially.
  • Page 23 PSR-E373/YPT-370 TEST PROGRAM Caution: ▪ The Test No.065 “Factory Reset” will delete all setup data (included the data that the customer has purchased). Be sure to save the important data to a computer via Musicsoft Downloader software, or tell this to the customer in advance.
  • Page 24 PSR-E373/YPT-370 Test Mode 2-1. Starting Test mode While holding down the [C#2], [F2] and [G#2] keys simultaneously, press the [ ] (Standby/On) switch. When Test mode is started, "TEST" is shown on the LCD screen. 2-2. Selection and execution of test items Press the [+] or [-] buttons in the Number buttons area to select the test item.
  • Page 25 PSR-E373/YPT-370 2-5. Test Program Item List Test Program Item Procedure for "Selection and execution of test items" ROM version This shows the ROM version. Press the number [1] button. The version number of the main program is displayed as shown below.
  • Page 26 PSR-E373/YPT-370 Test Program Item Procedure for "Selection and execution of test items" MUTE Check Confirms that the output MUTE function works properly. Press the [START/STOP] button. “MUTE Off” is shown on the LCD and the C5 sound is produced. Press the [+] or [-] button. "MUTE On" is shown on the LCD and the sound stops.
  • Page 27 PSR-E373/YPT-370 Test Program Item Procedure for "Selection and execution of test items" Main Volume Check Checks the minimum value and maximum value of the [MAIN VOLUME]. Press the [START/STOP] button. “MVol Min” is shown on the LCD. Set the [MAIN VOLUME] to the minimum. “MVol Max” is shown on the LCD.
  • Page 28 PSR-E373/YPT-370 Test Program Item Procedure for "Selection and execution of test items" Keyboard Check Checks whether each key works properly. Check that the LCD shows you the should-be-pressed key. Press the key specified on the LCD one by one. The each sound between C3 and B4 assigned to the pressed key will be produced.
  • Page 29 PSR-E373/YPT-370 Test Program Item Procedure No charging the Checks whether the voltage is supplied to batteries. batteries Check Connect the AC adaptor to the [DC IN] jack. Check the voltage between the battery + terminal and GND terminal. No problem if 0.2V or less is generated.
  • Page 30 PSR-E373/YPT-370 BACKUP Backup Parameters The following Backup parameters will be maintained even if the power is turned off. Backup parameters ▪ User Songs ▪ Style Number 206 to 215 ▪ Registration Memory ▪ Passing status of song and step ▪ FUNCTION Settings:...
  • Page 31 PSR-E373/YPT-370 INITIALIZATION There are following two methods to initialize the customer's setup data. Backup Clear This operation initializes the backup parameters and the Registration Memories. While holding down the highest white key, press the [ ] (Standby/On) switch to turn the power on.
  • Page 32 PSR-E373/YPT-370 SYSTEM BOOTING FLOW CHART Power ON テストモード？ Test Mode? PSWO output PSWO出力 boot チェ ック1 Check1 Opening screen displayed オープニング画面表示 テストプログラム用表示 Display for test program main Initialization of backup data  バックアップROM無し バックアップデータの初期化 without backup ROM 初期化タスク起動 Initialization task startup チェ ック5 Check5 Cancels ADC-IC Reset チェ ック2 ADC-IC Reset解除 Check2 PAD/MIDIで音を鳴らすことが可能 Sound can be emitted via PAD/MIDI メイン画面表示...
  • Page 33 PARTS LIST CONTENTS OVERALL ASSEMBLY................2 UPPER CASE ASSEMBLY................. 4 LOWER KEY BED ASSEMBLY..............6 KEYBOARD ASSEMBLY................8 ELECTORICAL PARTS................10 3.PARTS LIST * DESTINATION ABBREVIATIONS Australian model Russia model British model Spain model Canadian model Taiwan model German model U.S.A.

  • Page 34: Overall Assembly

    PSR-E373 PSR-E373/YPT-370 ■ OVERALL ASSEMBLY （総組立） OVERALL ASSEMBLY 10 上ケース Ass'y UPPER CASE ASSEMBLY 30 下ケースAss'y LOWER CASE ASSEMBLY...
  • Page 35 PSR-E373/YPT-370 PSR-E373 REF NO. PART NO. DESCRIPTION 部 品 名 REMARKS MODEL PSR-E373 モ デ ル PSR-E373 (VCF9360) OVERALL ASSEMBLY PK E 総 組 立 U,C,E,B,I,K,Y,A,P,Z (VDH1150) OVERALL ASSEMBLY PK J (VDH1180) 総 組 立 OVERALL ASSEMBLY PK CHN (VDH1170) 総...

  • Page 36: Upper Case Assembly

    PSR-E373 PSR-E373/YPT-370 ■ UPPER CASE ASSEMBLY UPPER CASE ASSEMBLY...
  • Page 37 REMARKS UPPER CASE ASSEMBLY 上 ケ － ス Ａ ｓ ｓ ’ ｙ PSR-E373/YPT-370 UPPER CASE ASSEMBLY PSR-E373 U,C,E,B,I,K,Y,A,P,Z (VDH1580) 上 ケ － ス Ａ ｓ ｓ ’ ｙ UPPER CASE ASSEMBLY PSR-E373 O (VDH1590) 上 ケ － ス Ａ ｓ ｓ ’ ｙ...

  • Page 38: Lower Key Bed Assembly

    PSR-E373 PSR-E373/YPT-370 ■ LOWER CASE ASSEMBLY LOWER KEY BED ASSEMBLY 16NS-C61鍵盤 KEYBOARD ASSEMBLY...
  • Page 39 PSR-E373/YPT-370 PSR-E373 REF NO. PART NO. DESCRIPTION 部 品 名 REMARKS LOWER CASE ASSEMBLY 下 ケ － ス　 Ａ ｓ ｓ ’ ｙ PSR-E373/YPT-370 LOWER CASE ASSEMBLY PSR-E373 (VDH1610) 下 ケ ー ス Ａ ｓ ｓ ’ ｙ LOWER CASE ASSEMBLY 下...
  • Page 40 PSR-E373 PSR-E373/YPT-370 ■ KEYBOARD ASSEMBLY KEYBOARD ASSEMBLY...

  • Page 41: Keyboard Assembly

    PSR-E373/YPT-370 PSR-E373 REF NO. PART NO. DESCRIPTION 部 品 名 REMARKS KEYBOARD ASSEMBLY 鍵 盤 Ａ ｓ ｓ ’ ｙ PSR-E373/YPT-370 KEYBOARD ASSEMBLY 16N C61 P2M I １ ６ Ｎ Ｓ － Ｃ ６ １ 鍵 盤 (ZW64810) KEYBOARD ASSEMBLY...

  • Page 42: Electorical Parts

    PSR-E373 PSR-E373/YPT-370 ■ ELECTRICAL PARTS （電気部品） ELECTORICAL PARTS DMLCD/PNL/PNR/MK-L/MK-H REF NO. PART NO. DESCRIPTION 部 品 名 REMARKS ELECTRICAL PARTS 電 気 部 品 VCX50800 CIRCUIT BOARD DMLCD (VCX5040)(YK716D0) Ｐ Ｃ Ｂ　 Ｄ Ｍ Ｌ Ｃ Ｄ ZV856400 CIRCUIT BOARD (ZV85630)(YJ069C0) Ｐ...
  • Page 43 PSR-E373/YDP-370 OVERALL CIRCUIT DIAGRAM (DMLCD, PNR, PNL, MVR, DC-IN, 61H-MK, 61L-MK) PSR-E373/YDP-370 to MK-H - CN5 T A 5 5 1 L 5 5 1 L 5 7 4 B K 1 0 0 5 H M 6 0 1 - T...

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