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C-357

US Model

Canadian Model

AEP Model

SERVICE MANUAL

SPECIFICATIONS

SECTION 1

GENERAL

Notes on chip component replacement

• Never reuse a disconnected chip component.
• Notice that the minus side of a tantalum capacitor may be

damaged by heat.

This section is extracted from
instruction manual.

— 2 —

CONDENSER MICROPHONE

MICROFILM

Ver 1.0  1999. 02

Summary of Contents for C-357

Page 1: ...S SECTION 1 GENERAL Notes on chip component replacement Never reuse a disconnected chip component Notice that the minus side of a tantalum capacitor may be damaged by heat This section is extracted from instruction manual 2 CONDENSER MICROPHONE MICROFILM Ver 1 0 1999 02 ...

Page 2: ...ws K 2 5 6 Screw K 2 5 5 Chassis 4 Terminal ground 1 Two screws 2 Two screws 8 Sleeve connector Note To re attach it turn the PAD knob first in the direction of the arrow and attach it 2 2 CHASSIS SLEEVE CONNECTOR 3 6 Remove the two solderings and remove the harness 3 Remove soldering 8 AMP board 4 Terminal plus 2 Terminal minus 9 Transformer output 5 Remove three solderings and remove the three h...

Page 3: ...duc tion tolerances Waveforms are taken with a oscilloscope Voltage variations may be noted due to normal produc tion tolerances Circled numbers refer to waveforms Signal path F MIC Ref No Location D1 F 3 D2 I 3 D3 H 3 D4 B 3 D5 B 3 D6 G 3 D7 G 2 IC1 G 2 Q1 B 5 Q2 C 3 Q3 I 3 Semiconductor Location 1 D6 ANODE 5µsec div 20V div Waveform MIC1 TOTAL CURRENT 7 mA CAPSULE DRY BATTERY SIZE AA IEC DESIGNA...

Page 4: ...RY CHECK INDICATOR D6 8 719 820 41 DIODE 1SS302 D7 8 719 975 40 DIODE RB411D IC IC1 8 759 564 83 IC XC6371A701PR COIL L1 1 412 963 11 INDUCTOR 100uH L2 1 412 963 11 INDUCTOR 100uH TRANSISTOR Q1 8 729 203 02 TRANSISTOR 2SK30A O Q2 8 729 230 63 TRANSISTOR 2SC4116 YG Q3 8 729 230 63 TRANSISTOR 2SC4116 YG RESISTOR R1 1 215 065 00 METAL OXIDE 999 99M 20 1 8W R2 1 215 065 00 METAL OXIDE 999 99M 20 1 8W ...

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