Nokia 6150 Service & Repair Hints page 5

N100 faulty/ poor soldering
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Check if voltage on Pin 29 drops of 700 mV during pressing the Power on button
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Check if there is a 32.768 kHz square wave on Pin 48
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Check if PURX Pin 54 goes up to 2.8 V DC
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Check if VXO Pin 28 goes up to 2.8 V DC
B100 faulty 32,768KHz
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Check 32.768 kHz ; 1 Vpp clock signal on B100
G650 faulty 13 MHz
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Check VXO 2,8V DC on pin 1 from G650
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Check 13 MHz; 1 Vpp on output pin 2
S001 User Interface
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Check if voltage on Pin 29 drops of 700 mV during pressing the Power on button
X300 UI Connector bend out
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Check if voltage on Pin 29 drops of 700 mV during pressing the Power on button
R118 missing/ poor soldering
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Check if voltage on Pin 29 drops of 700 mV during pressing the Power on button
D200 MAD faulty/ poor soldering
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Check 32.768 kHz square wave on Pin 124 (comes from CCONT Pin 48)
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Check 13 MHz on Pin 93 (comes from G650)
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Check VBB 2.8 V DC
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Check PURX 2.8 V DC on Pin 122 (comes from CCONT Pin 54)
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Check SLEEPX 2.8 V DC 0n Pin 113
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Resolder MAD complete
D210 FLASH faulty / poor soldering/ empty
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Check VBB 2.8 V DC on Pin 37
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If power consumption is around 20mA try to flash the phone
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Resolder FLASH completely
L103 faulty/ poor soldering
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Check VB on J232 or pin 8 from CCONT
X101 / X102 contacts bend out/ dirty
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Check if VBATT and Gnd are connected
version 1.0 / 19.10.1999
CONFIDENTIAL Service & Analysis Center Europe
Training Team
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