Yamaha KX-E300 Service Manual

Yamaha KX-E300 Service Manual

Stereo cassette deck
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For the system operation of KX-E300, please refer to Service Manual #100805 for the CRX-E300/NX-E300.
本機の 「システム動作」 については、CRX-E300/NX-E300のサービスマニュアル 100805 をご覧ください。
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 specifically YAMAHA Products, are already known and understood by the users,
and have therefore not been restated.
WARNING:
Failure to follow appropriate service and safety procedures when servicing this product may result in personal injury, destruction of expensive
components, and failure of the product to perform as specified. For these reasons, we advise all YAMAHA product owners that any service
required should be performed by an authorized YAMAHA Retailer or the appointed service representative.
IMPORTANT:
The presentation or sale of this manual to any individual or firm does not constitute authorization, certification or recognition of any applicable
technical capabilities, or establish a principle-agent relationship of any form.
The data provided is believed to be accurate and applicable to the unit(s) indicated on the cover. The research, engineering, and service departments of YAMAHA
are continually striving to improve YAMAHA products. Modifications are, therefore, inevitable and specifications are subject to change without notice or obligation
to retrofit. Should any discrepancy appear to exist, please contact the distributor's Service Division.
WARNING:
Static discharges can destroy expensive components. Discharge any static electricity your body may have accumulated by grounding yourself to
the ground buss in the unit (heavy gauge black wires connect to this buss).
IMPORTANT:
Turn the unit OFF during disassembly and part replacement. Recheck all work before you apply power to the unit.
I
CONTENTS
TO SERVICE PERSONNEL . . . . . . . . . . . . . . . . . . . 2
REAR PANELS . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-3
SPECIFICATIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
DIMENSIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
INTERNAL VIEW . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
ADJUSTMENTS/調整 . . . . . . . . . . . . . . . . . . . . 8-12
1 0 0 8 0 7
STEREO CASSETTE DECK
KX-E300
SERVICE MANUAL
SERVICE MANUAL
IMPORTANT NOTICE
DISPLAY DATA . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
IC DATA . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14-15
BLOCK DIAGRAM . . . . . . . . . . . . . . . . . . . . . . . . . . 16
PRINTED CIRCUIT BOARD . . . . . . . . . . . . . . . 17-20
SCHEMATIC DIAGRAM . . . . . . . . . . . . . . . . . . . . . 21
PARTS LIST . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23-33

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Summary of Contents for Yamaha KX-E300

  • Page 1: Table Of Contents

    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 specifically YAMAHA Products, are already known and understood by the users, and have therefore not been restated.
  • Page 2: To Service Personnel

    KX-E300 TO SERVICE PERSONNEL AC LEAKAGE 1. Critical Components Information EQUIPMENT WALL TESTER OR Components having special characteristics are marked Z OUTLET UNDER TEST EQUIVALENT and must be replaced with parts having specifications equal to those originally installed. 2. Leakage Current Measurement (For 120V Models Only)
  • Page 3: Specifications

    KX-E300 M J model SPECIFICATIONS Type /型式 Output Level /出力端子 Auto Reverse Line 570 mV/3.0 kΩ 4-Track 2-Channel Playback/Recording Power Requirements /電源電圧 Stereo Cassette Deck U, C models AC120 V, 60 Hz Heads /ヘッド B, G models AC230 V, 50 Hz...
  • Page 4: Dimensions

    KX-E300 DIMENSIONS 217 (8-9/16") Unit : mm (inch) INTERNAL VIEW MAIN P.C.B. (4) Cassette Mechanism Unit MAIN P.C.B. (1) MAIN P.C.B. (2) MAIN P.C.B. (3)
  • Page 5: Disassembly Procedures/分解手順

    KX-E300 I DISASSEMBLY PROCEDURES/分解手順 Remove parts in disassembly order as numbered. (番号順に取り外しを行ってください。) 1. Removal of Top Cover 1. トップカバーの外し方 a. qのネジ4 本とwのネジ4 本を外します。 ( Fig. 1) a. Remove 4 screws (q) and 4 screws (w) in Fig. 1. b. Lift the Top Cover at the rear and move it rearward b.
  • Page 6 KX-E300 4. Removal of Cassette Mechanism 4. カセットメカの外し方 a. yのネジ4 本を外します。 a. Remove 4 screws (y) in Fig. 3. b. Detach the hook in Fig. 3 and then pull out the b. フックを1 ヶ所外し、 カセットメカを外します。 ( Fig. 3) Cassette Mechanism.
  • Page 7 KX-E300 G Service Position G サービスポジション a. !0 のネジ 3 本を外します。 (Fig. 5) a. Remove 3 screws (!0 ) in Fig. 5. b. !1 のネジ 1 本を外します。 (Fig. 6) b. Remove 1 screw (!1 ) in Fig. 6. c. !2 のネジ 2 本と !3 のネジ 1 本を外します。 (Fig. 7)...
  • Page 8: Adjustments/調整

    KX-E300 ADJUSTMENTS/調整 1.Before adjustment 1. 調整の前に Since head magnetization, dust accumulations, etc. a. 帯磁および汚れなどによる各測定誤差をなくすため、 are likely to introduce error in the various characteris- ヘッドイレース、 ヘッドクリーニングを行ってください。 tics, it is very important that the heads are properly b. 調整は、メカ調整→再生系調整→録音系調整の順に demagnetized and cleaned.
  • Page 9 KX-E300 テストモード(動作・ディスプレイチェック) TEST MODE (Operation and Display Check) Enter the TEST MODE by pressing the STANDBY/ON テストモードにするには、電源 OFF の状態で STOP ボタ button while pressing the STOP button and r button ンと r ボタンを押しながら STANDBY/ON ボタンを押 when the power is OFF.
  • Page 10 KX-E300 “MECHANICAL ADJUSTMENT” Item to be Instrument Adjustment Step Tape Mode Rating Remarks Adjusted required part Check each CT-160L (FF, REW) Torque FF REW FF, REW torque : within 70—150g/cm. torque meter TW-2111A (FWD) PLAY Take up torque : 30—70g/cm.
  • Page 11 KX-E300 “ELECTRICAL ADJUSTMENT” Use 560 mV (250 nwb/m) for 0 dB as the standard level of the unit. 0dB = 250 nwb/m (315 Hz) = – 7 dBV (Rec out level) < Playback section > Item to be Instrument Points of...
  • Page 12 KX-E300 電気系調整 〈再生系の調整〉 本機の基準レベルは、0dB = 250nwb/m (315Hz ) - 7dBV (ラインアウトレベル) Step 調整項目 テープ 測定器 モード 測定箇所 調整箇所 規 格 再生レベル MTT-212N ACVM PLAY LINE OUT VR201 (L ch) - 5 dBV ± 0.3 dBV (315Hz) 315Hz, VR202 (R ch) 250nwb/m 再生周波数...
  • Page 13: Display Data

    KX-E300 DISPLAY DATA G V301: BJ707GNK (V358690) PATTERN AREA G PIN CONNECTION Pin 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...
  • Page 14: Ic Data

    KX-E300 IC DATA IC205 : M38B57M6-143FP (XW379B00) /FLD RDV2 CLK22 /FLD CLK21 /TxD /FLD /RxD /FLD /FLD CLK12 /FLD CLK11 /FLD OUT1 /FLD /FLD /FLD /FLD STB1 /INT /FLD BUSY1 /FLD RDY1 /RTP /FLD /RTP /FLD I/O Port Port P0 (8)
  • Page 15 KX-E300 IC205 : M38B57M6-143FP (XW379B00) Pin No. PORT RESISTOR Pin No. PORT RESISTOR P75/AN5 Mecha SW1 AD(PLAY, Half) P32/FL26 O FL-DIG3 ON : H P74/AN4 Loading SW AD(IN,OUT) P31/FL25 O FL-DIG2 ON : H P73/AN3 Meter L AD(-30 – +6)
  • Page 17: Printed Circuit Board

    KX-E300 I PRINTED CIRCUIT BOARD (Foil side) P.C.B. MAIN (1) (Lead Type Devices) To/From : MAIN (2) To : MAIN (2) G Semiconductor Location Ref. No. Location D108 D115 D116 D117 D118 Q101 Q102 Q103 Q104 Q105 Q106 Q107 Q108...
  • Page 18 KX-E300 I PRINTED CIRCUIT BOARD (Foil side) P.C.B. MAIN (1) (Surface Mount Devices) G Semiconductor Location Ref. No. Location D101 D102 D103 D104 D105 D106 D107 D109 D110 D111 D112 D113 D114 D119 P.C.B. MAIN (4) (Lead Type Devices) To : MAIN (1)
  • Page 19 KX-E300 I PRINTED CIRCUIT BOARD (Foil side) PLAYBACK LEVEL ADJ. RECORDING LEVEL ADJ. G Semiconductor Location Ref. No. Location P.C.B. MAIN (2) (Lead Type Devices) To/From : MAIN (3) Q201 To/From : R/P & ER HEADS Q202 To : MAIN (3)
  • Page 20 KX-E300 I PRINTED CIRCUIT BOARD (Foil side) From : MAIN (2) P.C.B. MAIN (3) (Lead Type Devices) DOLBY NR COUNTER RESET REC LEVEL STANDBY/ON DIRECTION MODE REC/ PAUSE To/From : MAIN (2) P.C.B. MAIN (3) (Surface Mount Devices)
  • Page 21: Schematic Diagram

    KX-E300 SCHEMATIC DIAGRAM IC101 : LB1641 IC102 : BA6138 Motor Driver 1/2 Power Compressor Amp. The voltages are measured using normal tape in the PLAYBACK LEVEL Vreg ADJ. (L ch) PLAY mode (no-signal condition). 0(10.1) COMP COMP Only the voltage in ( ) are in the REC mode.
  • Page 22: Parts List

    KX-E300 PARTS LIST I ELECTRICAL PARTS WARNING Components having special characteristics are marked Z and must be ● 印のある部分は、安全確保部品を示しています。部品の交換が必要な場合、 replaced with parts having specifications equal to those originally installed. パーツリストに記載されている部品を使用してください。 ● 本機に使用しているカーボン抵抗は、1/6Wです。このパーツリストには、記載してお Carbon resistors (1/6W or 1/4W) are not included in the ELECTRICAL りませんので、部品番号がHF85○○○○タイプまたは同等品を使用してください。...
  • Page 23 KX-E300 Ref. PART NO. Description Remarks Markets 部品名 Rank V9145100 P.C.B. SI:MAIN PCB集成 メイン    V9145200 P.C.B. SI:MAIN PCB集成 メイン    V9145300 P.C.B. SI:MAIN PCB集成 メイン    CB101 VQ963100 CN.BS.PIN 10P ウエハー        01 CB102 VQ963100 CN.BS.PIN 10P ウエハー        01 CB104 VQ963100 CN.BS.PIN 10P ウエハー        01 CB105 VB390200 CN.BS.PIN 6P コネクタベースポスト...
  • Page 24 KX-E300 Ref. PART NO. Description Remarks Markets 部品名 Rank C206 UR847220 C.EL 22uF ケミコン        01 C207 UR838100 C.EL 100uF ケミコン C208 UR838100 C.EL 100uF ケミコン C209 UA654120 C.MYLAR 0.012uF マイラーコン      01 C210 UA654120 C.MYLAR 0.012uF マイラーコン      01 C211 UR847100 C.EL 10uF ケミコン        01 C212 UR847100 C.EL...
  • Page 25 KX-E300 Ref. PART NO. Description Remarks Markets 部品名 Rank D106 VU992900 DIODE.ZENR MA8056-L 5.4V ツェナーダイオード   01 D107 VU998700 DIODE.ZENR MA8220-M 22V ツェナーダイオード   01 D108 VV307700 DIODE 1N4002S ダイオード       01 D109 VT332900 DIODE 1SS355 ダイオード       01 D110 VU996500 DIODE.ZENR MA8130-L 12.7V ツェナーダイオード   01 D111 VT332900 DIODE 1SS355 ダイオード       01...
  • Page 26 KX-E300 Ref. PART NO. Description Remarks Markets 部品名 Rank Q111 iC174020 TR 2SC1740S R,S トランジスタ      01 Q112 VG722000 TR.DGT DTC144ES デジタルトランジスタ Q113 VK432900 TR 2SD1915F S,T トランジスタ      01 Q114 VK432900 TR 2SD1915F S,T トランジスタ      01 Q115 VG805500 TR 2SC4391 R,S トランジスタ Q116 VG805500 TR 2SC4391 R,S トランジスタ...
  • Page 27 KX-E300 Ref. PART NO. Description Remarks Markets 部品名 Rank VR104 VJ694300 VR.TRIM B150KΩ 半固定VR       02 VR201 V4117800 VR.TRIM B10KΩ 半固定VR        VR202 V4117800 VR.TRIM B10KΩ 半固定VR        VR203 V4117800 VR.TRIM B10KΩ 半固定VR        VR204 V4117800 VR.TRIM B10KΩ 半固定VR        VR301 V3800800 VR A20KΩ 2連ロータリーVR   03 XL201 VE906000 RSNR.CE 4MHz セラミック振動子    01...
  • Page 28 KX-E300 Ref. PART NO. Description Remarks Markets 部品名 Rank RD353100 R.CAR.CHP 1Ω 1/10W チップ抵抗       01 RD354100 R.CAR.CHP 10Ω 1/10W チップ抵抗       01 RD355100 R.CAR.CHP 100Ω 1/10W チップ抵抗       01 RD355120 R.CAR.CHP 120Ω 1/10W チップ抵抗       01 RD355150 R.CAR.CHP 150Ω 1/10W チップ抵抗       01 RD355220 R.CAR.CHP 220Ω 1/10W チップ抵抗       01 RD355470 R.CAR.CHP 470Ω...
  • Page 29 KX-E300 I EXPLODED VIEW 1-11 1-30 1-23 1-22 1-31 1-31 1-24 1-30 1-30 1-21 1-23 % : Note on the Main PCB Of the Main PCB part Nos., only the silver (SI) type part Nos. are included in the table.
  • Page 30 KX-E300 I MECHANICAL PARTS Ref. PART NO. Description Remarks Markets 部品名 Rank 1-11 MF225100 S FLEXIBLE FLAT CABLE 25P 100mm S カード電線 C&C  * 1-21 V8845100 FRONT PANEL フロントパネル/SI   * 1-21 V8845000 FRONT PANEL フロントパネル/GD   * 1-22 V8845900 SUB PANEL-KX サブパネル−KX     * 1-22 V8845800 SUB PANEL-KX サブパネル−KX    ...
  • Page 31 KX-E300 I EXPLODED VIEW (Loading Mechanism) The item without reference No. is not supplied as a spare part. リファレンスNo.のない部品はパーツ供給されません。 Ref. PART NO. Description Remarks Markets 部品名 Rank AAX07660 LOADING UNIT F511630 ローディングユニット   13 AAX07480 HOLDER CST BLOCK F527078 カセットホルダーBLK  08...
  • Page 32 KX-E300 I EXPLODED VIEW (Cassette Deck Mechanism) F REC R REC METAL CASS IN The item without reference No. is not supplied as a spare part. リファレンスNo.のない部品はパーツ供給されません。 Ref. PART NO. Description Remarks Markets 部品名 Rank AAX07650 CASSETTE DECK MECH. UINT F511638 カセットメカユニット  ...
  • Page 33: Parts List For Carbon Resistors

    KX-E300 Parts List for Carbon Resistors Value 1/4W Type Part No. 1/6W Type Part No. Value 1/4W Type Part No. 1/6W Type Part No. 1.0 Ω 3100 3100 7100 10 kΩ 7100 HJ35 HF85 HF45 HF45 ❊ 1.8 Ω 3180 7110 11 kΩ...

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