Yamaha SV-200 Silent Violin Service Manual

SERVICE MANUAL HAMAMATSU, JAPAN 0.968K-948 M I Printed in Japan 2001.12 011616 NV CONTENTS SPECIFICATIONS .............................................................................. 3 PANEL LAYOUT .................................................................................. 4 CIRCUIT BOARD LAYOUT ................................................................. 6 BLOCK DIAGRAM .............................................................................. 7 DISASSEMBLY PROCEDURE ........................................................... 8 IC BLOCK DIAGRAM ......................................................................... 11 CIRCUIT BOARDS ........................................................................... 12 INSPECTIONS .................................................................................. 13 POINTS TO CHECK WHEN NOISE HAS OCCURED ..................... 13 .......................................................................................................... 14 .......................................................................................................... 14 TUNING ............................................................................................ 15 OVERALL CIRCUIT DIAGRAM PARTS LIST SV-200 SV-200 20011125-110000 SV-200 BR This document is printed on chlorine free (ECF) paper with soy ink.

2 SV-200 WARNING Components having special characteristics are marked and must be replaced with parts having specification equal to those originally installed. WARNING: CHEMICAL CONTENT NOTICE! The solder used in the production of this product contains LEAD. In addition, other electrical / electronic and / or plastic (where applicable) components may also contain traces of chemicals found by the California Health and Welfare Agency (and possibly other entities) to cause cancer and / or birth defects or other reproductive harm. DO NOT PLACE SOLDER, ELECTRICAL / ELECTRONIC OR PLASTIC COMPONENTS IN YOUR MOUTH FOR ANY REASON WHAT SO EVER! Avoid prolonged, unprotected contact between solder and your skin! When soldering, do not inhale solder fumes or expose eyes to solder / flux vapor! If you come in contact with solder or components located inside the enclosure of this product, wash your hands before handling food. 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 specifically Yamaha Products, are already known and under- stood 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 speci- fied. For these reasons, we advise all Yamaha product owners that all service required should be performed by an authorized Yamaha Retailer or the appointed service representative. IMPORTANT: This presentation or sale of this manual to any individual or firm does not constitute authorization, certifica- tion, recognition of any applicable technical capabilities, or establish a principal-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, therefor, inevi- table and changes in specification 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 bus in the unit (heavy gauge black wires connect to this bus). IMPORTANT: Turn the unit OFF during disassembly and parts replacement. Recheck all work before you apply power to the unit.

3 SV-200 SPECIFICATIONS Color : SV-200 BR ........ Brown SV-200 OB ....... Ocean Blue SV-200 CR ........ Cardinal Red SV-200 BL ........ Black Neck : Hard Maple Body : Spruce Fingerboard/Tuning Pegs : Ebony Bridge : Hard Maple (Aubert) Frame : ABS Resin Chin Rest / Tailpiece : Ebony Adjuster : 1st string (Wittner) Strings : Ball-end type (D’Addario : Zyex) Sensor : Stereo Piezo pick-up (underneath the bridge) Connectors / Controls : • Headphone Output • EQ CTRL (Equalizer Control) • LINE OUT • Volume • EQ MODE Switch (EQ MODE 1/EQ MODE 2) • POWER Switch (ON/OFF) Power : 6F22 (S-006P) 9V battery x1 Battery Life (Continuous Use) :Using Manganese battery : approximately 5 hours Using Alkaline battery : approximately 12 hours String Length : 328 mm (12-15/16”) Output Impedance : 1KΩ Dimensions : 597 (L) x 210 (W) x 116 (H) mm 23-1/2” (L) x 8-1/4” (W) x 4-9/16” (H) Weight : (with battery) 620g (1 lbs. 6 oz.) Accessorise : Owners Manual Battery 6F22 (S-006P) 9V battery x1 Stereo earphones x1

4 SV-200 PANEL LAYOUT Fingerboard Chin rest Tuning peg Nut 4th string (G) 3rd string (D) 2nd string (A) 1st string (E) Bridge Adjuster Frame Tailpiece Body Bridge seat End pin Tailpiece Wire Neck FRONT

5 SV-200 POWER switch ON/OFF VOLUME POWER lamp EQ MODE 1: Green EQ MODE 2: Red EQ CTRL (Equalizer control) EQ MODE switch EQ MODE 1/EQ MODE 2 6F22 (S-006P) 9V battery LINE OUT jack: Standard phone type (monaural) PHONES jack: Stereo mini type Pickup balancer CONTROL PANEL side

6 SV-200 CIRCUIT BOARD LAYOUT Battery Case MA Pick up Assembly JK PH KEC-54245 • CONTROL PANEL SIDE View •SIDE View

7 SV-200 BLOCK DIAGRAM Pickup Sensor (Low) Pickup Sensor (High) Pickup Assembly 5 5 5 5 6 7 3 3 3 2 2 1 1 1 1, 2 3 1 2 7 6 6 4 1 7 6 IC1-8P 1 2 7 6 3 3 3 2 1 VOLUME VR1 SW2 SW1 VR3 VR2 Pickup Balancer EQ CTRL TR4 TR1 LD1 TR5 TR3 TR2 +5A +4.5V +4.5V +4.5V +4.5V +4.5V +4.5V +4.5V +4.5V +4.5V +4.5V +4.5V +9A +9A +9A +5A +5A +9A +9A +4.5V REGULATOR +5V GR RE CN1-3P CN2-5P CN3-5P CN4-3P CN5-2P CN6-3P MA JK PH EQ MODE1/ EQ MODE2 POWER ON/OFF RY1 PHONES LINE OUT BATTERY JK1 JK2 OP AMP IC3-8P OP AMP IC5-8P OP AMP IC2-8P OP AMP IC2-8P OP AMP IC3-8P OP AMP IC4-8P OP AMP IC5-8P OP AMP IC1-8P IC6-4P IC8-3P OP AMP RESET MUTE MUTE MUTE SUM SUM SUM L.P.F L.P.F From IC6 to RY1 1Pin FT1 FT2 FT3 H.P.F KEC-54246

8 SV-200 DISASSEMBLY PROCEDURE (Fig. 1) (Fig. 2) (Fig. 3) (Fig. 4) Nut [A] Nut [B] Nut [A] Nut [B] Silhouette Assembly Silhouette Assembly JK Circuit Board Circuit Board PH Circuit Board Circuit Board PREPARATION Before disassembling the unit, comfirm the following items. (See Fig.1, 2, 3) • Turn off the power. • Remove the chin rest. • Remove the battery from the battery box. • Loosen all the strings and remove them. And besides, remove the bridge. 1. MA Circuit Board (Time required: about 1 min) 1-1 Remove the knob marked [A50]. (Fig.5) 1-2 Remove the four (4) screws marked [A70] and the two (2) screws marked [A80] to remove the panel lid assembly. (Fig.5) 1-3 Remove the two (2) screws marked [C50]. The MA circuit board can then be removed. (Fig.6) 2. JK Circuit Board (Time required: about 2 min) 2-1. Remove the panel lid assembly. (See Procedure 1) 2-2. Remove the nut marked [A]. The JK circuit board can then be removed. (Fig.4) * Take care not to lose the three spacers for the JK circuit board installation. 3. PH Circuit Board (Time required: about 2 min) 3-1. Remove the panel lid assembly. (See Procedure 1) 3-2. Remove the nut marked [B]. The PH circuit board can then be removed. (Fig.4)

9 SV-200 [A50] [A70] [A70] [A80] [C50] [C50] MA Circuit Board Circuit Board (Fig. 5) Pickup Assembly Pickup Assembly Escutcheon Escutcheon (Fig. 7) (Fig. 6) 4. Pickup Assembly (Time required: about 2 min) 4-1. Remove the panel lid assembly. (See Procedure 1) 4-2. Remove the connector assembly of the pickup from the MA circuit board. 4-3. Push the cable of the pickup into a hole of the body from backside so that the pickup floats. Hold the pickup with the escutcheon and pull them out from the front side. (Fig.7) * Pulling the pickup alone may damage the cable. So make sure to pull the pickup and the escutcheon at the same time. [A50]: Knob (V2300100) [A70]: Bind Head Tapping Screw-P 3.0X20 MFZN2BL (VI064700) [A80]: Bind Head Tapping Screw-1 3.0X12 MFZN2BL (VB998200) [C50]: Bind Head Tapping Screw-P PW 3.0X8 MFZN2BL (V4514500)

10 SV-200 [C40] [C30] [C50] [C40] [C30] [C50] Shield Cover-B Shield Cover-B (Fig. 8) [D40] (Fig. 9) 5. Silhouette Cover Assembly (Time required: about 5 min) 5-1. Remove the panel lid assembly. (See Procedure 1) 5-2. Remove the MA circuit board. (See Procedure 1-3) 5-3. Remove the JK circuit board. (See Procedure 2-2) 5-4. Remove the PH circuit board. (See Procedure 3-2) 5-5. Remove the screw marked [C30], the screw marked [C40] and the screw marked [C50]. The silhouette cover assembly can then be removed. (Fig.8) * The shield cover B is non-reusable because it is attached on the silhouette cover assembly. * The end block and the end pin are adhesively attached to the silhouette cover assembly. 6. Battery Box (Time required: about 2 min) 6-1. Remove the panel lid assembly. (See Procedure 1) 6-2. Remove the four (4) screws marked [D40]. The battery box can then be removed. (Fig.9) [C30]: Bind Head Tapping Screw-1 3.0X12 MFZN2BL (VB998200) [C40]: Bind Head Tapping Screw-1 3.0X25 MFZN2BL (VZ101300) [C50]: Bind Head Tapping Screw-P PW 3.0X8 MFZN2BL (V4514500) [D40]: Flat Head Tapping Screw-P 2.6X10 MFZN2BL (V8125400)

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Yamaha SV-200 Silent Violin Service Manual

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