Section 5 Adjustment Procedures; Preparation - Icom IC-R5 Service Manual

SECTION 5

5-1 PREPARATION

Some adjustments must be adjusted on the adjustment mode. When entering the adjustment mode, the 68 kΩ terminator is
required.
' ' REQUIRED TEST EQUIPMENT
EQUIPMENT
Output voltage
DC power supply
Current capacity
DC voltmeter Input impedance
Digital multimeter Input impedance
' ' ENTERING THE ADJUSTMENT MODE
q Connect a 68 kΩ terminator to the [SP] jack.
w Push and hold the [FUNC] key, and then turn power ON.
NOTE:
Entering adjustment mode, keep on entering adjustment mode until dis-connect the 68 kΩ terminator and turn power
OFF.
OPERATION ON THE ADJUSTMENT MODE
Change the adjustment channel or item [UP]
Change the adjustment channel or item [DOWN]
Change the adjustment value
Verify the adjustment value
When entering adjustment mode, some adjustments need to push [V/M] or [FUNC] and [V/M] keys to write the adjustment
value to the CPU.
CONVENIENT!–AUTOMATICALLY ADJUSTMENT
BAR ANTENNA, VHF SENSITIVITY and UHF SENSITIVITY ADJUSTMENTS can be ajusted automatically.
The detail shows at page 5-8.
ADJUSTMENT PROCEDURES
GRADE AND RANGE
: 3.0 V DC
: 1 A or more
: 50 kΩ/V DC or better
: 10 kΩ/V DC or better
Pushing key
Start VHF and UHF SENSITIVITY ADJUSTMENTS automatically.
[V/M] Set the REFERENCE FREQUENCY ADJUSTMENT value.
Set the S-METER ADJUSTMENT value.
Pushing key
Push and hold
the [FUNC] key,
Set the VHF and UHF SENSITIVITY ADJUSTMENTS value when
and then push manual adustment.
the [V/M] key.
EQUIPMENT
Frequency counter
Standard signal
generator (SSG)
: [BAND] key
: [TS] key
: [DIAL]
: Push and hold [FUNC] key, and then push [BAND] key.
Operation
Operation
5 - 1
GRADE AND RANGE
Frequency range : 0.1–1000 MHz
Frequency accuracy : ±1 ppm or better
Sensitivity : 100 mV or better
Frequency range : 0.1–1300 MHz
Output level : 0.1 µV–32 mV
(–127 to –17 dBm)