Adjustment Procedures; Preparation - Icom IC-208H Service Manual

SECTION 5 ADJUSTMENT PROCEDURES

5-1 PREPARATION

Need to enter the adjustment mode, and the JIG calble as shown the page 5-2 is required when adjusting the IC-208H.
I REQUIRED TEST EQUIPMENT
EQUIPMENT
Output voltage
DC power supply
Current capacity
Measuring range
RF power meter Frequency range
(terminated type) Impedance
SWR
Frequency range
Frequency accuracy
Frequency counter
Sensitivity
Frequency range
Standard signal
Output level
generator (SSG)
I ENTERING THE ADJUSTMENT MODE
q Turn the transceiver's power OFF.
w Connect the JIG cable to the [MIC] jack.
e Push and hold the [SET] and [BAND] keys, and then turn power ON.
NOTE:
Exiting from the adjustment mode when the transciever's power is OFF.
I OPERATING ON THE ADJUSTMENT MODE
• Change the adjustment value
• Verifying the adjustment value
• Forward the adjustment item
• Go back the adjustment item
• Store the adjustment value in the memory
CAUTION:
Need to push the [BAND] key when storing the adjustment value in the memory. Otherwise, the transceiver is not
adjusted properly.
ATTENTION!: DO NOT
adjustment items are adjusted). Otherwise, the transceiver do not work properly. Refer to the next
page in detail.
NOTE:
GREDE AND RANGE
: 13.8 V DC
: 12 A or more
: 0.1–100 W
: 1.8–600 MHz
: 50 Ω
: Less than 1.2 : 1
: 0.1–600 MHz
: ±1 ppm or better
: 100 mV or better
: 0.1–1200 MHz
: 0.1 µV–32 mV
(–127 to –17 dBm)
: [DIAL]
: [M/CALL] key
: [SET/LOCK] key
: [S.MW/MW] key
: [BAND] key
adjust following adjusment items (Because they are adjusted automatically when other
DISPLAY
[Fr1]–[Fr8]
[rE–], [rE+]
[PT]
[PCV], [PCU]
[FT]
[DTA], [DTB]
[DT], [CT]
[SL]
[SqW]
[SqN]
*Need to adjust about manually adjustment items.
EQUIPMENT
Frequency range
FM deviation meter
Measuring range
Frequency range
Oscilloscope
Measuring range
Frequency range
Audio generator
Measuring range
Power attenuation
Attenuator
Capacity
ADJUSTMENT ITEMS
Reference frequency's temp. correction
Reference voltage
Protect time
Protect temperature
Cooling fan temperature
DTCS wave form
DTCS/CTCSS amplitude
*S-Meter
*Squelch level (Wide)
*Squelch level (Narrow)
5 - 1
GREDE AND RENGE
: 0–600 MHz
: 0 to ±5 kHz
: DC–600 MHz
: 0.01–10 V
: 300–3000 Hz
: 1–500 mV
: 50 or 60 dB
: 150 W or more