Icom IC-F7000 Power Supply Circuits, PA Unit Voltage Line, Display Board RC-26 Voltage Line

4-5 POWER SUPPLY CIRCUITS

4-5-1 PA UNIT VOLTAGE LINE

LINE	DESCRIPTION
HV13	The voltage from an external power supply.
HV	The same voltage as the	HV13	line	passed
	through the fuse (F6701).
S13V	The same voltage as the	HV13	line	passes
	through the switching relay (RL6701).
13.8	The same voltage as the	HV13	line	passes
	through the switching relay (RL6701).
PA8V	8 V for transmitter circuits regulated by the +8
	regulator circuit (IC6601).
T8V	8 V for transmitter circuits regulated by the T8
	regulator circuit (Q6601, Q6602).

4-5-2 DISPLAY BOARD (RC-26) VOLTAGE LINE

LINE	DESCRIPTION
H13V	The voltage from PA and MAIN units via the
	J8201.
10V	Common 10 V converted from the 13 V line and
	regulated by the +10 regulator circuit (IC8301).
5V	Common 5 V converted from the 5 V line and
	regulated by the +5 regulator circuit (IC8290).
8V	Common 8 V converted from the 8 V line and
	regulated by the +8 regulator circuit (IC8310).

4-5-3 PLL UNIT VOLTAGE LINE

LINE	DESCRIPTION
HV13	The voltage from MAIN units via the J5001, pin
	1.
H5V	Common 5 V line from the MAIN unit via the
	J7331, pin 21.
5V	Common 5 V converted from the 13 V line and
	regulated by the +5 regulator circuit (IC5001).
8VL	Common 8 V converted from the 13 V line and
	regulated by the +8 regulator circuit (IC5031).

4-5-4 MAIN UNIT VOLTAGE LINE

LINE	DESCRIPTION
S13V	The voltage from the PA unit via the J1901.
R13V	Receive 13 V converted from the S13V line and
	regulated by the R13 regulator circuit (Q1505).
8V	Common 8 V converted from the S13V line and
	regulated by the +8 regulator circuit (IC1502).
	Common –5 V converted from the S13V line and
–5V	regulated by the –5 V DC-DC converter (IC1551,
	D1551, D1552)
T8	Transmit 8 V converted from the S13V line and
	regulated by the T8 regulator circuit (Q1501).
R8	Receive 8 V converted from the S13V line and
	regulated by the R8 regulator circuit (Q1502).
5V	Common 5 V converted from the S13V line and
	regulated by the +5 regulator circuit (IC1501).
H5V	Common 5 V converted from the HV13 line and
	regulated by the +5 regulator circuit (IC3101).
HV	Common 5 V converted from the HV13 line and
	regulated by the +5 regulator circuit (IC3101).

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