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KD-55X7 E Series
Sony KD-55X7 E Series User Manual
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116
03
.
7
F
a
ilu
r
e
D
ia
g
n
o
s
is
b
y L
E
D
Standby LED
Fla
shing Times
M
onitor
ing Item
s
Content
2
REG19.
5V_MON
REG 19.5V
Failure
3
X
_A
UDIO_MON
Audio Fai
lure
3
AUDIO
_I
2C(
M
_SDA1/SCL1)
Audio I2C
com
m
unic
ation
fail
ure
4
P
ANE
L12V_MON
Panel 12V
Failure
5
P
A
NEL
I2
C ACK
Panel ID
NVM Fail
ure
6
BL_E
RR
Back
l
ight E
rror
115
117
Table of Contents
Table of Contents
4
Safety Notes
5
Warnings and Caution
5
Caution Handling of LCD Panel
5
Caution about the Lithium Battery
6
Safety Check-Out
6
Leakage Test
6
Rms Value
6
How to Find a Good Earth Ground
7
Lead Free Information
7
Handling the FLEXIBLE FLAT CABLE (FFC)
7
Attachment Order of Screw
11
Solder-Less Tuner Replacement Procedure
11
LED Indicator
14
Self Diagnostic Function
14
Failure LED Display
15
Triage Chart
16
LED Blinking
17
Troubleshooting
17
2X Blinking – Main Power Error
19
Check Point for BFX
20
3X Blinking – Audio Error
21
4X Blinking – Panel Power Error
25
BB8 Layout
26
5X Blinking – Panel I2C Error
27
Blank Screen, Backlight Visible
29
No Picture: Tuner
30
RF Input no Picture / Noisy Picture
30
For Analogue Tuning Failed
32
FOR DIGITAL TUNING 1:Only for am
36
NO SOUND: TUNER (Only for Analogue)
43
Ethernet – no Connect – General Checking
49
TV Turn on Condition
49
Ethernet (B-Board Checking) – Checking Parts Broken or Knock off
50
CI Slot – Cannot Play / no Picture / no Sound – General Checking
51
CI Slot (B-Board Checking) – Checking 5V Points
52
HDMI – no Picture – General Checking
55
HDCP Failure Analysis – General Checking
57
+5V Power Failure Analysis – HDMI1 and HDMI3 General Checking
58
+5V Power Failure Analysis – HDMI2 General Checking
59
HPD Failure Analysis – HDMI1 and HDMI3
60
HPD Failure Analysis – HDMI2
61
HPD Failure Analysis
62
I2C Failure Analysis – General Checking
63
TMDS Failure Analysis – General Checking
64
HDMI Bravia Sync (CEC) Not Function – General Checking
65
HDMI ARC Not Function – General Checking
66
HDMI – no Picture
67
HDMI no Picture– Part List
69
WIFI – Cannot Search Device / Connection Failed – General Checking
70
WIFI – Cannot Search Device / Connection Failed – Checking Point
71
Video Analog Signal Path – no Picture – General Checking
73
Video Analog Signal Path – no Picture – Checking Point
74
Audio D Amp IC Normal Operation Condition
77
Troubleshooting Detail Audio Problem
79
Main Speaker no Sound
80
Headphone (HP) out no Sound
82
Analog Audio Input no Sound
84
Analog RF no Sound
85
HDMI Audio no Sound
86
HDMI ARC Failure
87
USB Audio no Sound
89
USB Port 1 – no Detection
90
Reference Points
92
No Power DDCON/LDO
92
Block Diagram
93
DC-DC Converter Overall Check
94
DDC: +3.3V_DDC_OUT Check
95
DDC: +1.5V_DDR Check
96
SW: +5V_MAIN Check
97
DDC: +5.0V_DDC_OUT Check
98
DDC: +1.0V_M3 Check
99
Ldo: +1.05V_M3_Stby
100
DDC: + 1.8V_TU Check
101
DDC: 1.05V_M3_A Check
102
DDC: 5.0V_WIFI Check
103
SW: +3.3V_MAIN Check
104
DDC & LDO Locations
105
How to Enter Service Mode
110
Service Adjustments
110
Service Mode Unique Items
111
Key Behavior Summary
112
How to Enter Self Check
114
Diagnosis Menu Information
115
Failure Diagnosis by LED
116
Panel Selection and LVDS Spectrum (%)
117
Serial Number Edit
118
Model Number Setting
121
White Balance Adjustment
124
WB/MURA/CUC Data Transfer
126
Aging Mode
129
Test Reset
129
Tuner Detection
130
ATMOS CEC Disable
132
CEC Force la = 0
133
Read HDMI EDID
134
Option Bit
135
Option Bit (Shipping Region)
136
Circuit Board Location
138
Diagrams
138
Block Diagram FY17 (KC)-4K (BB8 PWB for EU )
140
Connector Diagram
142
4
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Sony KD-55X7 E Series Specifications
General
Brand
Sony
Model
KD-55X7 E Series
Category
LCD TV
Language
English
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