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SP-1
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13
notched/ banded end facing the rear of the board as illustrated. There is
no need to use a socket, but if you do, use care in soldering the socket
and inserting the chip.
62. Install U2, 8-pin audio amplifier IC LM386.
63. Install C25, 470 uF, with correct polarity.
64. Install C24, 220 uF, with correct polarity.
65. Install C22, .47 uF, with correct polarity.
66. Install R9, 4.7K (yellow-violet-red).
67. Install R17, 100K (brown-black-yellow).
68. Install R15, 100K (brown-black-yellow).
69. Install JMP1.
70. Install JMP3.
71. Insert the 28-pin DIP IC socket into its PC board position. Check and
make sure that all 28 pins are visible on the solder-side of the board.
Slightly bend the 4 outermost pins to lock the socket in place. Make sure
the socket is flush against the top of the board. Solder all 28 pins with
clean connections and no solder bridges.
72. Install R11, 100K (brown-black-yellow).
73. Install C16, 47 uF, observe polarity.
74. Install C11, 2.2 uF, observe correct polarity.
75. Install C15, 2.2 uF, observe correct polarity.
76. Install C23, .47 uF, observe correct polarity.
77. Install C19, 2.2 uF, observe correct polarity.
78. Install C20, 2.2 uF, observe correct polarity.
79. Install C21, 2.2 uF, observe correct polarity.
80. Install C6, .47 uF, observe correct polarity.
81. Install jumper wire JMP2.
82. Install another jumper wire JMP20.
83. Install C18, .05 or .047 uF (marked .05 or 503 or .047 or 473).
Содержание SP1
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Страница 12: ...SP 1 12 SP1 SCHEMATIC DIAGRAM...
Страница 22: ...SP 1 22 PARTS LAYOUT DIAGRAM SP1 SPEAKERPHONE KIT...