Codan 9323 Service Manual

Maintenance
HF SSB Transceiver 9323/9360/9390/9780 Technical Service Manual 5-11
Voltage measurements
On the circuit diagrams and relevant circuits, note that voltages are shown at
various points under different conditions to enable the faulty section of the
transceiver to be located.
Always check first the parameters listed in the tables below.
Table 5 -1: Display Panel PCB supply voltages
[1 04-02974]
Supply Description Regulator
"A" rail
+13.6 V nominal unregulated supply
"B" rail
+10 V ±0.2 V regulated supply
IC9
+5 VA
+5 V ±0.2 V regulated supply
IC11
–7 V
–7 V ±1 V from charge pump supply
IC7
Table 5 -2: Microprocessor and Audio PCB supply voltages
[1 04-02976]
Supply Description Regulator
"A" rail
+13.6 V nominal unregulated supply
"B" rail
+10 V ±0.2 V regulated supply
IC201
+5 VA
+5 V ±0.2 V regulated supply
IC202
+5 VB
+5 V ±0.2 V regulated supply
IC203
Table 5 -3: Rx/Exciter PCB supply voltages
[1 04-02972 and 04-03135]
Supply Description Regulator
"A" rail
+13.6 V nominal unregulated supply
(supplies the crystal oven only)
"B" rail
+10 V ±0.2 V regulated (supplied
from Microprocessor & Audio PCB)
IC201
+5 VB
+5 V ±0.2 V regulated (supplied from
Microprocessor & Audio PCB)
IC203
+18 V
+18 V ±1 V charge pump supply
IC11
+26 V
+26 V ±1 V charge pump supply
IC11

Codan 9323 Specifications

General

Brand	Codan
Model	9323
Category	Transceiver
Language	English