Icom IC-7410 Service Manual - Page 24

Adjustments On The Ctrl Unit, Ct

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4-5 ADJUSTMENTS ON THE CTRL UNIT ADJUSTMENT ITEM TRANSCEIVER'S CONDITION OPERATION MEASURE POINT TUNER REFERENCE 1 • Frequency: 3.55 MHz • [TUNER]: Through 2 • TX power: Max. • Transmitting • Connect a 50 ohms dummy load to [ANT1]. 1) Turn OFF the power. 2) Connect the short plug (Page 4-1) to [REMOTE]. 3) Hold down [MENU] and [FILTER], and then turn ON the power. 4) Push [F-5] (STR). CP31 - 3 Turn OFF the power. ADJUST POINT C15 - VALUE Min. voltage Verify the message " *** OK *** " is displayed. • THE LOCATION OF ADJUST/CHECK POINTS ON THE CTRL UNIT TUNER REFERENCE Check point TUNER REFERENCE Adjust point REF C45 C43 B-71 CP31 CP31 R45 R44 IC41 R41 C15 R17 R19 C31 C23 C16 R15 R13 D11 C19 C10 R11 4 L11 C15 CT 4 - 6

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4 - 6
ADJUSTMENT ITEM
TRANSCEIVER'S
CONDITION
OPERATION
MEASURE
POINT
ADJUST
POINT
VALUE
TUNER REFERENCE
1
• Frequency: 3.55 MHz
• [TUNER]: Through
• TX power: Max.
• Transmitting
•
Connect a 50 ohms dummy load
to [ANT1].
CP31
C15
Min. voltage
2
1)
Turn OFF the power.
2)
Connect the short plug (Page
4-1) to [REMOTE].
3)
Hold down [MENU] and [FILTER],
and then turn ON the power.
4)
Push [F-5] (STR).
–
–
Verify the
message
" *** OK *** "
is displayed.
3
Turn OFF the power.
4-5 ADJUSTMENTS ON THE CTRL UNIT
• THE LOCATION OF ADJUST/CHECK POINTS ON THE CTRL UNIT
TUNER REFERENCE
Adjust point
TUNER REFERENCE
Check point
C10
C15
C16
C19
C23
C31
C43
C45
CP31
D11
IC41
L11
R11
R13
R15
R17
R19
R41
R44
R45
C15
CP31
REF
B-71
CT
4