Circuit Voltage Chart; Ic Voltage; Fan Motor Voltage; Smps Capacitor & Zener Diode - LG OK99 Service Manual

CIRCUIT VOLTAGE CHART

1. IC VOLTAGE

SPEC
NO. SYMBOL
(V, mV)
IC101
1 VDD : -0.5~+6.5V
IC,Microcontrollers
IC201
2 VIN : 4.5V TO 24V
DC,DC Converter
IC202
3 VIN : 2.7V TO 5.6V
DC-DC Converter
IC203
4 VIN : 2.5V TO 5.5V
LDO
IC204
5 VIN : 2.5V TO 5.5V
Limit Switch
IC205
6 VIN : 2.7V TO 5.6V
DC-DC Converter
IC206
7 VIN : 4.5V TO 5V
Limit Switch
IC207
8 VIN : 4.5V TO 5V
Limit Switch
IC301
9 VIN : -0.3V to 3.9V
4ch Audio ADC
IC302
10 VDD:2.7~35.5V
TUNER
IC400 "VCC1 : 4.3~13.2V
11
Motor Driver VCC2 : 4.3~VCC1"
IC401
"VDD1 : 2.7~3.6V (Analog)
12 digital servo signal
VDD_CORE : 1.4~1.65V"
processing
IC501
13 IC,Digital Signal Digital Power 3.3V or 1.2V
Processors
IC502
14 VDD : 3.0~3.6V
SDRAM
IC503
15 VDD : 3.0~3.6V
Serial Flash Memory
IC504
16 VDD : 3.0~3.6V
Serial Flash Memory
IC505
17 VIN:1.1~5.5V
Voltage Detector
IC601
18 VCC : 2.97V TO 3.63V
Sound/Audio Processor
IC602, IC603
19 VCC:-18V ~ 18V
OP Amplifi er
IC700 ~ IC703
20 VCC : 0V To 200V
AUDIO AMPLIFIER
ICA301
21 VDD:3~3.6V
Line Driver
Rating -20 %
Measured Voltage
Rating +20 %
Voltage (V) Voltage (V) Description of operation
VDD : 3.1 ~ 3.3V VDD : 3.37V IC,Microcontrollers
Vin : 14VA, Vin : 13.22VA, High Effi ciency 3A, 24V, 500kHz
Vout : 5V Vout : 5.26V Synchronous Step Down Converter
Vin : 5.1VA, Vin : 5.17VA
Step-Down Converters
Vout : 3.3VA Vout : 3.39V
Vin : 5.1VA, Vin : 5.16VA, 1A Ultra Low Dropout Linear
Vout : 5V Vout : 5.01V
Vin : 3.3VA, Vin : 3.48VA ultra-low RDS(ON) switch
Vout : 3.3V Vout : 3.45V with current limiting
Vin : 5.1VA, Vin : 5.16VA,
Step-Down Converters
Vout : 1.2VA Vout : 1.25V
Vin : 5.1V Vin : 5.28V
power-distribution switch
Vout : 5.0V Vout : 5.27V
Vin : 5.1VA, Vin : 5.2VA power-distribution
Vout : 5V Vout : 5.19V
2ch and 4ch Audio ADCs
AVDD : 3.3V AVDD : 3.30V
with Universal Front End
DVDD : 3.3V DVDD : 3.37V
VDD:3.3V VDD:3.30V
VCC1 : 5.0V VCC1 : 5.29V
5-channel BTL Driver
VCC2 : 5.0V VCC2 : 5.23V
Servo signal processor
VCC : 3.3V VCC : 3.36V
for compact disc player
VDD33 : 3.3VA VDD : 3.38VA
IC,Digital Signal Processors
VDD12 : 1.2VA VDD : 1.25VA
VCC : 3.3V VCC : 3.38V 4 M x 4 BANKS x 16 BITS SDRAM
VCC : 3.3V VCC : 3.38V SERIAL FLASH MEMORY
VCC : 3.3V VCC : 3.38V SERIAL FLASH MEMORY
3-PIN MICROPROCESSOR
Vin : 3.1~3.3VA Vin : 3.37VA
RESET CIRCUITS
VDD : 3.3V VDD : 3.28V Digital Audio Processor
+VA : 5.0V +VA : 4.99V
-VA : -5.0V -VA : -4.89V
VA : 5.0V VA : 4.94V
PROTECTED DIGITAL
-VA :-5.0V -VA :-4.85V
AUDIO AMPLIFIER
B+ : -54.0V B+ : -54.7V
2-VRMS Audio Line Driver
VDD : 3.3V VDD : 3.29V
With Adjustable Gain
3-45

2. FAN MOTOR VOLTAGE

NO.
IC Function
IC TC TEMPERATURE
SPEC
85 °C
3. SMPS CAPACITOR & ZENER DIODE
125 °C
150 °C
NO
125 °C
Regulator
NO
125 °C
150 °C
125 °C
125 °C
switch
125 °C

4. CAPACITOR VOLTAGE

Input Mux
TUNER 85 °C
NO.
85 °C
85 °C
85 °C
85 °C
85 °C
10
11
85 °C
12
13
85 °C
14
15
125 °C
16
17
OP Amplifi er 85 °C
18
19
125 °C
20
21
85 °C
22
3-46
Check MODE SPEC Check Result
VOL10 : 12.06 V
FAN MOTOR
1 12V VOL11~26 : 12.04V
Input Voltage
VOL27 : 12.02V
Capacitor
LOC SPEC
450V/
1 C904
270uF
ZENER DIODE
LOC
1 ZD901
2 ZD902
3 ZD903, ZD904
4 ZD912, ZD932
5 ZD913
6 ZD914
Rating -20%
(88V, 60Hz)
LOCATION NO. Value
Voltage (V)
1 C271 220uF USB_5V
2 C402 100uF DVCC_5V
3 C404 47uF DVCC_3.3V
4 C416 47uF VREF
5 C418 3.3uF VREF
6 C427 220uF M_5V
7 C605 220uF VDD_CORE
8 C657 220uF DVCC_3.3V
9 C701 2200uF +B +66V
C702 1000uF +B +66V
C703 2200uF -B -66V
C707 1000uF -B -66V
C768 100uF DC_DET
C801 100uF USB_5V
C802 47uF F-
C805 1uF VFD_12V
C806 1uF DVCC_3.3V
C813 100uF USB_5V
C821 47uF F+
C831 1uF VH
C832 1uF VH
C834 1uF VH
Copyright © 2018 LG Electronics Inc. All rights reserved.
Only for training and service purposes.
Check Method
Not connect FAN
Module.(12V)
Sales AREA
W/W
CHECK
27V
6.2V
20V
20V
10V
33V
Rating +20%
(288V, 60Hz)
Voltage (V)
5.17
5.22
3.37
1.63
1.69
5.22
1.28
3.29
66.30
66.30
-66.60
-66.60
0.00
5.16
3.01
12.04
3.38
5.16
5.16
30.05
21.13
16.91