LG HB620 Service Manual page 102

Bluetooth RF Test procedure
1. Set phone to bluetooth test-mode.
- Enter Test Mode(3845#*620#)
2. Insert a phone in a TEMCELL (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
Set the Bluetooth
NO
VREG_BT_2.85V
is asserted?
YES
NO
XTAL_IN
is asserted ?
YES
NO
CLK_REF
is asserted?
YES
NO
SYNC_DET_TX_EN
is asserted ?
YES
NO
SBST/ SBCK?SBDT
is asserted ?
YES
NO
Bluetooth works well?
YES
END
Copyright © 2008 LG Electronics. Inc. All right reserved.
Only for training and service purposes
TC-3000A (Bluetooth Tester)
→ Module Test Set
Check PMIC
(U401) Pin#64
Check Oscillator(X101)
and Check Buffer(U103)
Check soldering of
BT(M701)
Check soldering of
BT(M701)
Check Pin#4 / #11 / #12
Change the main board
- 103 -
4. TROUBLE SHOOTING
→ BT DUT → BT DUT ON
LGE Internal Use Only