Kenwood Basic M1 D Service Manual
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Extracted text from Kenwood Basic M1 D Service Manual (Ocr-read)
Page 2
BASIC M1D
CONTENTS
DISASSEMBLY FOR REPAIR.
BLOCK & LEVEL DIAGRAM
CIRCUIT DESCRIPTION ........
ADJUSTMENT/REGLAGESIABGLEICH
PC BOARD ...............................................
CIRCUIT DIAGRAM ......
EXPLODED VIEW .. ..
PARTS LIST ........................... ..22
SPECIFICATIONS ........................................... Back cover
#:0me
DISASSEMBLY FOB REPAIR
1. Remove the seven screws (oI located on
the upper and edges of the front panel.
2. Remove the four screws (9 I holding the FL
display cover.
3. Remove the four screws IQI holding the
printed circuit board (X25- A/BI.
4, Remove the screw (0 I located inside of the
chemical capacitor.
5. Remove the screws (0 ) holding the Power
transistor, using pliers.
6, Remove the seven screws I6 I holding the bottom plate
in the direction of the arrow, then remove the bottom plate
in the direction of the arrow.
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* 225:;
Page 4
CIRCUIT DESCRIPTION
Components Use & Function Operation. Condition & Compatibility
D1, 2 For temperature compensation
D3, 4, 5, 6 For the VIG CerUIi
D7, 8, 9, 10 For the VIG circuit
D11, 12, 13, 14 For the power supply at the final
low srde
D15, 16, 17, 18 For protection
D19, 20 For the VIG circun
D58 For the power supply of the
winking indicator
D59 For the power supply of the pro
tection circuit
D60 For relay operation
D61, 62 For the power supply of the A
class constant-voltage supply
D63, 64 For the power supply of the A
Class constant-current supply
D65 For the winking indicator
D66 For rectification (Low sidel
D67 For rectification lngh side)
Display unit (X25-3080-10)
Components Use & Function Operation, Condition & Compatibility
lCl For the level meter Wide range, 32 dB log scale indication, For indicating 12 points per channel
01, 2 For the FL luminance adjustment
010 For power supply
D1, 2 For static electricity protection
D3 For rectification W068
D4 For constant-voltage supply
D5 For power supply
D6 For the power indicator