Panasonic KX-TG2220BXB Service Manual page 34

KX-TG2220BXB / KX-TG2220BXF / KX-TG2220BXS / KX-TGA226BXB / KX-TGA226BXF / KX-TGA226BXS
11.4.4. Check Table for RF Unit
No Item
1a. Link confirmation
[NORMAL
POWER]
1b. Link confirmation
[TEST POWER]
for confirmation
the sensitivity of
RF unit
2 IC801 working
confirmation
3 TX Power
confirmation
4 Receiver
confirmation
(1*) BS : Base unit which is checked.
HS : Handset unit which is checked.
BS (working) : Base unit which is working.
HS (working) : Handset unit which is working.
(*2)<Spectrum analyzer setting>
SPAN: 10MHz
VBW, RBW: 1MHz
SWEEP: 1sec.
Procedure 1. Put "HS (working)" on BS.
2. Set MODE to [NORMAL POWER] of "HS
(working)".
3. Press [TALK] key of "HS (working)" to
establish link.
Procedure 1. Change MODE to [TEST POWER] of "HS
(working)".
2. Press [TALK] key of "HS (working)" to
establish link.
3. Confirm the suspicious BS links to HS
(working) with approximately the same
distance from BS (working).
Procedure 1. Set Test-mode Just entering to test
mode.(*3)
2. Confirm oscillate signal of RF UNIT (8.192
MHz at OSC). (*5)
Check point 1. Check Xtal oscillator at Q260 - C of the
base unit.
2. Check DSP interface(IC801←→DSP/BS)
(*4).
Procedure 1. Put RF wire to ANT and ANT_GND (See
Base Unit Reference Drawing).
Connect this wire to the Spectrum
Analyzer.
2. Set Test-mode. (*7)
3. Confirm TX power level within +11±5dBm
(*2)
Check point 1. Check L801 ~ L805, D801, D802, R805,
R806, C804, C805, C807, FL801 and
soldering.
2. Check Antenna in BS.
Procedure 1. Put "HS (working)" on BS.
2. Set MODE to [NORMAL POWER] of "HS
(working)".
3. Press [TALK] key of "HS (working)" to
establish link.
4. Change MODE to [TEST POWER] of "HS
(working)".
5. Press [TALK] key of "HS (working)" to
establish link. Confirm the suspicious BS
links to HS (working) with approximately
the same distance from BS (working).
Check point 1. Check C115, C114, L111, C118 soldering.
2. Check Antenna in BS.
BS (Base unit) (*1)
(*3)See TEST MODE ( P.37).
(*4)See RF-DSP interface signal wave form (P.35).
See CIRCUIT BOARD (BASE UNIT) (P.80).
See CIRCUIT BOARD (HANDSET) (P.84).
(*5)See Base Unit Reference Drawing (P.40).
(*6) see Handset Reference Drawing (P.41)
(*7) see Test mode flow chart for Base Unit (P.37)
(*8) see Test mode flow chart for Handset (P.38)
Note:
DSP is IC201. (for Base Unit)
DSP is IC201. (for Handset)
34
HS (Handset) (*1)
1. Put HS on "BS (working)".
2. Set MODE to [NORMAL POWER] of "BS
(working)".
3. Press [TALK] key of "HS" to establish link.
1. Change MODE to [TEST POWER] of "BS
(working)".
2. Press [TALK] key of "HS" to establish link.
3. Confirm the suspicious HS links to BS
(working) with approximately the same
distance from HS (working).
1. Set Test-mode Just entering to test
mode.(*3)
2. Confirm oscillate signal of RF UNIT (8.192
MHz at OSC). (*6)
1. Check Xtal oscillator at Q204 - C of the
handset.
2. Check DSP interface(IC801←→DSP/HS)
(*4).
1. Put RF wire to ANT and ANT_GND (See
Handset Reference Drawing).
Connect this wire to the Spectrum
Analyzer.
2. Set Test-mode. (*8)
3. Confirm TX power level within +11±5dBm
(*2)
1. Check L801 ~ L805, D801, D802, R805,
R806, C804, C805, C807, FL801 and
soldering.
2. Check Antenna in HS.
1. Put HS on "BS (working)".
2. Set MODE to [NORMAL POWER] of "BS
(working)".
3. Press [TALK] key of "HS" to establish link.
4. Change MODE to [TEST POWER] of "BS
(working)".
5. Press [TALK] key of "HS" to establish link.
Confirm the suspicious HS links to BS
(working) with approximately the same
distance from HS (working).
1. Check C115, C114, L111, C118 soldering.
2. Check Antenna in HS.