Nokia 5110 Instruction De Maintenance

NSE–1

System Module UP8R

Original 02/98

3/A3–R11

(Version 15)

J101

FBUS_TX

active state

pulsed DC (0V72.8V)

J104

CCONTCSX (CCONT

chip select)

active state

pulse active 0V, non–active

2.8V

J108

CHRG_CTRL

charger connected

pulsed DC (0V/2.8V)

J220

V5V

active state

nominal 5.0V (min 4.8V, max

5.2V)

J223

CCONTINT (charger,

RTC interrupt)

interrupt

 pulse active 2.8V, non–active

0V

J224

VCOBBA

active state

nominal 2.8V (min 2.7V, max

2.85V)

J225

EXTSYSRESETX

power on

reset state 0V, normal state

2.8V

J226

VCXOPWR

power on

active state 2.8V, non–active

0V

J227

PURX (power on reset)

power up/down

reset state 0V, normal state

2.8V

J228

SLEEPCLK (32kHz

clock)

power on

pulsed DC (0V/2.8V)

J235

ROM1SELX

active state

pulse active 0V, non–active

2.8V

J251

AGND

pcb ground

0V

J256

COBBADAX

active state

pulse active 0V, non–active

2.8V

J500

Control voltage for UHF

VCO module G600

channel 60

channel 1

channel 124

2.25 +/– 0.25 V

> 0.8 V
< 3.7 V

J504

Control voltage for VHF

VCO circuit

typ. 2.0 –2.2 V min 0.5 / max

4.0 V

J508

VSYN_2 ( regulated

supply for PLLS )

2.8 V min 2.7 / max 2.85 V

J534&J5

36

13 MHz IF output to

N250

–95 dBm @ X540

(ext. RF connector )

RXC at level of full

calibrated gain

typ ca. 1.0 – 1.1 V pulsed

min. 0.7 / max. 1.4 V

typ. 50 mVpp balanced

voltage at 13 MHz

J538

13 MHz output from

Z620 to N620

–95 dBm @ X540

(ext. RF connector )

RXC at level of full

calibrated gain

typ. ca. 1.5 V pulsed

typ. ca 600 uVrms

J542

VHF VCO output ( 232

MHz )

–

typ. 400 mVpp.

> 100 mVpp required

J554

TXC ( TX power control

voltage )

@level 19 typ. ca. 0.6 V pulse

@level 5 typ ca. 1.8 V pulse

J556

TXP ( TX enable )

2.8 V logic level pulse,

( max. 0.8 V ”0” / min 2.0 V ”1” )

J558

TXQP ( other half of
balanced Q–signal )

0.8 V pulsed

400 mVpp

J560

TXIP ( other half of bal-

anced I–signal )

0.8 V pulsed

400 mVpp