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4-5-3 PLL UNIT VOLTAGE LINE
4-5 POWER SUPPLY CIRCUITS
4-5-1 PA UNIT VOLTAGE LINE
LINE
HV13
HV
S13V
13.8
PA8V
T8V
DESCRIPTION
The voltage from an external power supply.
The same voltage as the HV13 line passed
through the fuse (F6701).
The same voltage as the HV13 line passes
through the switching relay (RL6701).
The same voltage as the HV13 line passes
through the switching relay (RL6701).
8 V for transmitter circuits regulated by the +8
regulator circuit (IC6601).
8 V for transmitter circuits regulated by the T8
regulator circuit (Q6601, Q6602).
4-5-2 DISPLAY BOARD (RC-26) VOLTAGE LINE
LINE
H13V
10V
5V
8V
DESCRIPTION
The voltage from PA and MAIN units via the
J8201.
Common 10 V converted from the 13 V line and
regulated by the +10 regulator circuit (IC8301).
Common 5 V converted from the 5 V line and
regulated by the +5 regulator circuit (IC8290).
Common 8 V converted from the 8 V line and
regulated by the +8 regulator circuit (IC8310).
LINE
HV13
H5V
5V
8VL
DESCRIPTION
The voltage from MAIN units via the J5001, pin
1.
Common 5 V line from the MAIN unit via the
J7331, pin 21.
Common 5 V converted from the 13 V line and
regulated by the +5 regulator circuit (IC5001).
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
S13V
R13V
8V
–5V
T8
R8
5V
H5V
HV
DESCRIPTION
The voltage from the PA unit via the J1901.
Receive 13 V converted from the S13V line and
regulated by the R13 regulator circuit (Q1505).
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
regulated by the –5 V DC-DC converter (IC1551,
D1551, D1552)
Transmit 8 V converted from the S13V line and
regulated by the T8 regulator circuit (Q1501).
Receive 8 V converted from the S13V line and
regulated by the R8 regulator circuit (Q1502).
Common 5 V converted from the S13V line and
regulated by the +5 regulator circuit (IC1501).
Common 5 V converted from the HV13 line and
regulated by the +5 regulator circuit (IC3101).
Common 5 V converted from the HV13 line and
regulated by the +5 regulator circuit (IC3101).