LG KE990 Service Manual - Page 124

Bluetooth RF Test - case

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Bluetooth RF Test 4. TROUBLE SHOOTING TC-3000A (Bluetooth Tester) 1. Set phone to bluetooth test-mode. - Enter Test Mode(3845#*990#) → Module Test Set → BT DUT → BT DUT ON 2. Insert a phone in a TEMSELL (in case of radiation test) 3. Set 'discover' after push menu button of the tester and select the link analyzer . 4. After 'set test mode', confirm the connection state. 5. Measure the power of full channel after hopping mode is selected to 'ON' 6. You can select wanted test cases after getting an optimized power TP801 M800 TP800 Set th e blu eto oth ON VREG_BT_2.85V and VREG_MSMP_2.7V is asse rted? Yes XTAL_IN is asse rted? Yes CLK_RE F is asse rted? Yes SYNC_DET_TX_EN is asse rted? Yes SBST/SBCK/ SBDT is asse rted? Yes Blu etooth is work well? Yes END No Check P MIC (U501) Pin#64 Check Osc illator No (X100) An d Check B uffer (U102) No Check s olde ring of BT(M800) No Check s olde ring of BT(M800) No Check TP800/TP801/ P802 No Change the main bo ard TP802 BT Antenna BT_GND R800 BT_ANT Copyright © 2008 LG Electronics. Inc. All right reserved. Only for training and service purposes - 125 - LGE Internal Use Only

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- 125 -
4. TROUBLE SHOOTING
Bluetooth RF Test
1. Set phone to bluetooth test-mode.
- Enter Test Mode(3845#*990#)
→
Module Test Set
→
BT DUT
→
BT DUT ON
2. Insert a phone in a TEMSELL (in case of radiation test)
3. Set ‘discover’ after push menu button of the tester and select the link analyzer .
4. After ‘set test mode’, confirm the connection state.
5. Measure the power of full channel after hopping mode is selected to ‘ON’
6. You can select wanted test cases after getting an optimized power
LGE Internal Use Only
Copyright © 2008 LG Electronics. Inc.
All right reserved.
Only for training and service purposes
M800
BT_ANT
BT Antenna
TP800
TP801
TP802
BT_GND
R8
00
Set th e blu eto oth
O
N
VREG_BT_2.85V
and
VREG_MSMP_2.7V
is asserted
?
Check PMIC
(U501) Pi
n#64
XTAL_IN
is asserted
?
Check Osc illator
(X100)
And
Check Buffer
(U102
)
CLK_REF
is asserted
?
Check soldering
of BT(M800
)
No
No
No
Yes
Yes
Yes
SYNC_DET_TX_EN
is asserted
?
Check soldering
of BT(M800
)
No
Yes
SBST/SBCK/SBDT
is asserted
?
Check
TP800/TP801/
P802
No
Yes
Bluetooth is
work we
ll?
Change
the main bo
ard
END
No
Yes
TC-3000A (Bluetooth Tester)