CV6683H-E42 Service Manual

CV6683H-E42 Service Manual

CV6683H-E42 is an integration board of power supply, LED driver and TV

board. It can receive the PAL/SECAM analogue television signals and

DVB-T2/T/C/S2/S digital television signals. It is suitable for the market in

Europe (include UK) etc. CV6683H-E42’s power part is an energy-efficient

ultrathin DC-line switching power supply unit, with backlight power under

45W, The main promotion backlight voltage is between 65V-100V, and single

backlight output. It fits to 32〞to 42〞LED backlight panel.

1. Safety Instructions：

1.1 Replace, soldering any components and dial/plug cable, the power supple
must be cut off.
a) BULK Capacitor need to discharge.
b) After power on, the BULK Capacitor cannot be touched.
1.2 Anti-static Precautions（Whole production process must be anti-static！）
a）Shall not be casually touched IC.
b）Shall be used the anti-static soldering iron.
c）Anti-static gloves must be wearer.
1.3 Replace the components with special safety requirements, should be refer to
reference list, and shall not be arbitrarily changed the specifications and types.
1.4 Test and verify the board be sure to use supporting accessories (power panel,
keypad, etc.), if use other accessories need to carefully identify the
connection is correct.
1.5 The storage temperature and humidity are show as follow, please in strict
accordance with the implementation:
The storage temperature/humidity: - 40 ~ + 85 ℃. < = 95%
The usage temperature/humidity: - 10 ~ + 60 ℃. < = 95%
Note: when maintenance of this mainboard, please in strict accordance
with upon safety instructions.
CV6683H-E42 Service Manual

2. Main function：

1． Supports SD and HD mode (480 p / 576 I / 720 p / 1080 I/p)；

2． Standby power consumption（≤1W）(Support WIFI Wake up)
3． Port：

ATV (Analog PAL/SECAM)，DTV(T2/T/C) 1 path

(Input port) DTV(S2/S) 1 path

RCA AV IN 1 set
USB2.0 2path
HDMI In 3 path
RJ45 1 path

(Output port) Audio Out (L,R) 1 set

EARPHONE（L，R） 1set
optical 1 path
4. CA53 Quad core @1.1GHz processor, Built-in 512MB DDR3；
5． Supports USB software update；

3. The basic principle

（1）Analog signal process：

Antenna receive signal and send to TUNER(UT3,Mxl661)，SOC(U7
MSD6683)through I2C to control the TUNER, select frequency, set intermediate
frequency bandwidth and set the intermediate frequency signal amplitude. Then
TUNER output intermediate frequency into SOC to demodulate and decode.
Finally, the signal was translated into video and audio signal.
（2）The basic block diagram：
CV6683H-E42 Service Manual
36 PIN LVDS HDMI1 HDMI2 HDMI3
IR&LED&KEY CONNECTOR (CEC) (CEC) (CEC/ARC)
RJ45
BACK LIGHT

EMMC DDR3 -2133M

4GB

PCMCIA
512MB or 256MB
USB2.0*2 Coax/Optical

EARPHONE
ANT
ANT: 2.4GHz-2.5GHz
MSD6683(Built-in 512M DDR3)
Matching
Network
CRYSTAL:24MHz ANT
7603
USB
Matching
Network

MXL661 AV2017
TPA3138D CRYSTAL:40MHz
LNB WI-FI:2.4GHz-2.4835GHz
RT5047B

DVB-T/T2 DVB-S2
CRYSTAL:24MHz CRYSTAL:27MHz

CV6683H-E42 principle block diagram

(3) The power supply block diagram：
U4 U5
+12V_Standby +5V_Standby +3.3V_Standby/200mA
JW5060
3A
JW5223 MSD6683
Q9
+3.3V_Normal/220mA
PMOS 3407 MSD6683
Power_ON/OFF
FB +3.3V_TUNER/200mA+150mA
MXL661&AV2017

EMMC_POWER/50mA
UD1 EMMC
1.8V_EMMC_POWER
LP3992

+3.3V_AMP/83mA
AMP
Q2
WIFI_POWER/350mA
PMOS 3407 MT7603
WIFI_ON/OFF
UT1
ANT_POWER/400mA
SY6280AAC
Option MXL661-ANT
ANT_P_ON/OFF
U3
+1.5V_DDR/740mA
POWER JW5211 MSD6683&DDR
IN
UD2
+5V_Normal +5V_USB/1000mA
SY6280AAC USB2.0*2
Power_ON/OFF
+5V_PCMCIA/100mA
PCMCIA

U2
+12V_Standby +1.1V_VDDC/2800mA
JW5060 MSD6683
Power_ON/OFF

+12V_Standby MAX:2X8W@8R
TPA3138D

U1
+12V_Standby LNB_POWER/500mA
TPA3138D AV2017-ANT
LNB_EN

+12V_Standby
Q5 Panel Power
0R PMOS 3407 LVDS
+5V_Standby
Panel_ON/OFF

CV6683H-E42 power supply block diagram

(4) 12V to 5V_Standby circuit:
CV6683H-E42 Service Manual

U4 C 74 100nF /16V +5 V _ S t a n d b y
12V IN J W 5 0 6 0 TTS O TB TP 4
+5 V _ S t a n d b y

1
3 L5 4.7uH /3.3A
IN

BST
2 R 48
SW C 50
R1

GND
R 49 100K 5 4 100pF /50V C 66 C 71 C 76 + C 42
C 67 C 68 EN FB 68K_1% 100uF /16V
100nF /16V 10uF /6.3V 10uF /6.3V

1
10uF /16V 100nF /16V C 51 3A 0
R 47
N C /100nF /16V R2

12K_1%

Vout=0.765*(1+R1/R2)

JW5060T is a low power DC-DC component of Joulwatt,SOT23-6 package, the

main features of the IC are show as follow：
 Input voltage range: 4V—18V
 Output voltage range: 0.8V—15V
 Up to 3A output current.
 The typical soft start time is 1.6ms.
 Output short protection, thermal protection, current run-away protection,
input under voltage lockout.
From the feature of JW5060T, We need to pay attention on follows:
 Although there is PIN to PIN component of other brand, suggest according to
the BOM material number to replace this component. If there is must to use a
high specification to replace, it is recommended to replacement of adjacent
specification, in order to avoid excessive ripple in light load mode.
 Under-voltage and overheat shutoff are unlatched, in other word, after get rid
of these faults, the circuit can automatically return to normal state (not restart
condition).
(5) 12V_Standby to +1.0V_VDDC core voltage circuit:
CV6683H-E42 Service Manual

U2 C 13 100nF /16V
12VIN +1 2 V _ S t a n d b y +1 2 V _ S TB J W 5 0 6 0 TTS O TB +1 . 0 V _ V D D C

6
TP 6
3 +1 . 0 V _ V D D C _ C P U +1 . 0 V _ V D D C
IN L2

BST

1
2 2 1 Note： 能 提 供 最 大 电 流 3A。
SW
2.2uH /4.5A

GND
C 10 C 11 R 27 10K 5 4
P W R _ O F F _ C TR EN FB
10uF /16V 100nF /16V C 14 C 18 C 16 C 15 C 17 C 33

1
R 25
100pF /50V R1 100nF /16V 10uF /6.3V 10uF /6.3V 10uF /6.3V N C /10uF /6.3V
NC C 12 R 26 13K_1% +1 . 0 V _ V D D C NC
+3 . 3 V _ S t a n d b y 4K7 R 158 NC 1uF /6.3V

1 2
+3 . 3 V _ N o rm a l
D A1 N C /SS14 R 22
R 24 R 23
用 于 控 制 掉 电 时 序 ， DC OFF时 ，
VDDC需 要 在 VDDP(3.3V Normal)后 至 少 10ms才 掉 下 Vout=0.765V*(1+R1/R2) R2 NC
143K_1% NC
53K6_1%

3
Q4
2N 7002
1 4K7 R 29 VID _0

2
VID[0] R2 VDDC
L 53.6K 0.9505V
H 38.987K 1.02V

(6) 5V to 1.5V DDR voltage circuit:

+1.5V _D D R
U3 TP 7
+5V _S tandby J W 5211 +1.5V _D D R
L3

1
4 3 2 1
R 71 IN SW
1 5 2.2uH /2.2A
GND

EN FB C 80 R 72
R1 18K2_1%
100K N C /33pF /50V C 82
2

C 45 C 53 1A + C 64 C 69

10uF /6.3V 100nF /16V C 72 100uF /16V N C /10uF /6.3V

220nF /16V 100nF /16V
R 70
R2 12K_1%

Vout=0.6*(1+R1/R2)=1.51V

JW5211 is a low power DC-DC component of Joulwatt,SOT23-5 package, the

main features of the IC are show as follow：
 Input voltage range: 2.5V—6.5V
 Output voltage range: 0.6V—6.5V
 Up to 1A output current.
 Output short protection, thermal protection, Hot-plug in protection, input
under voltage lockout.
From the feature of JW5211, We need to pay attention on follows:
 Although there is PIN to PIN component of other brand, suggest according to
the BOM material number to replace this component. If there is must to use a
high specification to replace, it is recommended to replacement of adjacent
specification, in order to avoid excessive ripple in light load mode.

(7) 5V to 3.3V_Standby circuit

CV6683H-E42 Service Manual

+3.3V _S tandby
TP 5
U5
+5V _S tandby J W 5 2 2 3 S O TA 1 +3.3V _S tandby
L4
4 3 2 1
R 74 IN SW
1 5 4.7uH /3.1A

GND
EN FB R 76
R1 54K9
10K C 87

2
C 65 C 70 C 86 2A + C 75 C 81

1 0 u F / 6 . 3 V1 0 0 n F / 1 6 V N C /100nF /16V 100uF /16V 10uF /6.3V 100nF /16V

NC
R 73
靠 近 DC-DC R2 12K_1%

Vout=0.6*(1+R1/R2)=3.345V

JW5223 is a low power DC-DC component of Joulwatt,SOT23-5 package, the

main features of the IC are show as follow：
 Input voltage range: 2.5V—6V.
 Output voltage range: 0.6V—6V.
 Up to 2A output current.
 Output short protection, thermal protection, Hot-plug in protection, input
under voltage lockout.
From the feature of JW5223, We need to pay attention on follows:
 Although there is PIN to PIN component of other brand, suggest according to
the BOM material number to replace this component. If there is must to use a
high specification to replace, it is recommended to replacement of adjacent
specification, in order to avoid excessive ripple in light load mode.

(8) 5V to 3.3V_Normal circuit

3.3V Normal Power
+3 . 3 V _ N o rm a l
TP 1
+3 . 3 V _ S t a n d b y Q8 +3 . 3 V _ N o rm a l
1
2 3

R 88
+3 . 3 V _ S t a n d b y S I 3 4 0 7 -TP
C 92 R 81
1

C 88 470R
10K 100nF /16V
R 82 100nF /16V
R 84 PO W ER _O N /O F F

47K
3

10K R 83
P W R -O N / O F F 1 Q9
2 P W R -O N / O F F 3904
H :Power on
2

L :Power off 10K

(9) 5V to 1.8V_normal circuit

CV6683H-E42 Service Manual

+1 . 8 V _ N o rm a l
+3 . 3 V _ N o rm a l UD1 TP 3 +1 . 8 V _ N o rm a l
L P 3 9 9 2 -1 8 B 5 F
1 5 1
VIN VOU T

3 4
GND
EN NC
C 31 C 43
C 84
2

100nF /16V 10uF /6.3V N C /100nF /16V

NC

LP3992 is a low power CMOS LDO component, SOT23-5 package, the main
features of the IC are show as follow：
 Input voltage range: 2V-5.5V.
 300mA Output Current, 550mA Peak Current.
 Current Limiting and Thermal Shutdown Protection.

(9) 5V_normal circuit

.
+5 V _ N o rm a l
+5 V _ S t a n d b y +5 V _ N o rm a l TP 2
1
UD2
5 1
VIN VOU T
2
GND
P W R -O N / O F F R D 1 10K 4 3
EN #F LG

CD1 CD2 SY 6280AAC R 85 C 90

4K7
100nF /16V

1uF /6.3V NC
NC

SY6280 develops ultra-low RDS(ON) switch with programmable current limit to

protect the power source from over current and short circuit conditions, the
main features of the IC are show as follow：
 Input voltage: 2.4V to 5.5V
 2A load current capability
 Programmable current limit
 Enable polarity: active high
CV6683H-E42 Service Manual

 Over temperature protection

From the feature of SY6280, We need to pay attention on follows:
 Although there is PIN to PIN component of other brand, suggest according to
the BOM material number to replace this component. If there is must to use a
high specification to replace, it is recommended to replacement of adjacent
specification, in order to avoid excessive ripple in light load mode.

(11) TUNER circuit

1、Mxl661 Hybrid TV silicon tuner
Mxl661 Internal block diagram as follows：

MXL661
+3.3V _T

+1.8V _T
470K

C T1 6 10nF /50V
C T3 0
R T 11

T
1

+3.3V _T T
1uF /6.3V XT1
T 2 4 M H z/ 2 0 P F / 1 0 P P M
L T2 220nH
1 2
2

5 V _ A N T_ E T
5 V _ A N T_ E T
C T1 9
5V_AN T
2

C T1 1
100nF /16V L T5 1 0 0 n F / 1 6 V U T3
25

24

23

22

21

20

19

5V_AN T 27nH Mx L661

T
C T2 1
GND2

GND1
AS

XT AL_P
VD D 1.8V
R ESET

XT AL_N

GND GND 5.6pF /50V

C N T1
1

绿 色 粗 线 要 求 75欧 姆 阻 抗 C T2 2 1nF /50V

R F _J AC K T 1 18
4
2

390pF /50V L T4 8.2nH /H Q VD D 3.3V_1 C LK_O U T

T T
4
2

1 RF C T2 5 R F in C T2 6 1nF /50V 1 2 1 2 C T2 0 1 n F / 5 0 V 2 17 SD A_R F

N C /2.7pF /50V

RF L T3 27nH LN A_IN P SD A
LT 11 220nH C T 64 180pF /50V

T 3 16 SC L_R F
T T T
3
5

330nH

T LN A_IN N SC L
2

3
BAV99

4 15 +3.3V _T
3
5

FB T5 F B 1 K /3 0 0 m A
VD D 1.8V_1 MxL661_QFN24P VD D _IO
C T 12
100nF /16V

GND GND
+1.8V _T T 5 14
T
LT 6

C T 17
100nF /16V

AG C 2/G PO G N D _D IG
DT4

C T 27

T 6 13
1

I F -A G C
2

T T AGC VD D _1P2
NC
IF _O U T N _2

IF _O U T N _1

T
IF _O U T P_2

IF _O U T P_1

VD D 3.3V_2

VD D 1.8V_2

1.8nF /50V

T
C T 18
1

T T
T
7

10

11

12

1. 8V网 络 的 电 容 ， 要 按 照 原 理 图 位 置 ，
放 在 对 应 的 管 脚 旁 边 ， 不 能 随 便 放 置 。
+1.8V _T
+3.3V _T

C T2 9

C T2 4 1uF /6.3V
VOP IF +
T
100nF /16V
VON IF -
T

IF AGC DIF Tuner Power

VOP C T1 4 N C /100nF /16V IF P_ET
+ 3 . 3 V _ TU N E R
NC +3.3V _T

I F -A G C 100R R T1 0 A G C _ T_ E T F B T3
A G C _ T_ E T [ 2 ]
F B120R /2A
C T 31
10uF /6.3V

CT9
N C /10uF /6.3V

C T 32
100nF /16V

TC T1 3 T
100nF /16V VON C T1 5 N C /100nF /16V IF M_ET

T NC
close to TUNER T
close to tuner 220mA NC T
CV6683H-E42 Service Manual

The main features of the IC are show as follow：

 RF frequency range: 44MHZ-898MHZ.
 Channel bandwidth: 6MHZ,7MHZ,8MHZ.

2、AV2017 Hybrid TV silicon tuner

AV2017 Internal block diagram as follows：
CV6683H-E42 Service Manual
S S C L _ TU SC L_ET
S2 SILICON TUNER AV2017
R T1 8 33R
+3 . 3 V _ S +3.3V_TUNER S S D A _ TU R T1 9 33R SD A_ET

FB T8

C T 50 33pF /50V

C T 54 33pF /50V
S2

C T 63
F B 1 2 0 R /2 A S2
C T6 2

10uF /6.3V
S2 S2
S2
N C /1uF /6.3V S2
NC
Track1 is 900mil (RFinput to CT38)
Track2 is 350mil (CT38 to CT36) +3.3V_S
Trace2 C T5 9 C T6 1
LN B_PW _ET
33pF /50V 100nF /16V
C T3 8 C T3 6 C T3 4 C T3 3 S2 S2
C T5 8 C T6 0
1nF /50V 39pF /50V N C N C /100nF /16V S2
S2 S2 NC NC 1uF /6.3V S2 1nF /50V

CP
Trace1 XTAL1 C T5 6 27pF /50V

21

20

19

18

17

16
S2
+3.3V_S
1

1
NC

R EGC AP

CP
EPAD

VC C

VC C

GND
XT2
N C /BAV99
2 7 M H z/ 2 0 P F / 1 0 P P M
D T6 C T5 7 100nF /16V 1 15 S2
VC C XTA L 1

2
S2
1 RFIN 1 2 2 14
3

R F _S XTA L 2 C T5 2 27pF /50V

NC R F IN XTA L 2 S2
C N T2 C T5 3 39pF /50V L T1 0 5.1nH 3 AV2017 13 SSDA_TU
GND SD A
2
3
4
5

2
R F _ J A C K _ TH R E A D S2 S2
S2 L T9 I F -A G C -S 4 12 SSCL_TU
NC R F AGC SC L
C T5 5 NC 5 11 ADDR0 R T1 7 NC
R F LP AD D R 0

R XQN
1pF /50V NC

R XQP

R XIN

R XIP
VC C
1

S2
I2C Addr: 0xC6
C T5 1 U T4

10
NC S2
NC

+3.3V _S
A G C _ S _ E T R T1 6 100R I F -A G C -S
S 2 C T4 9
75 ohm Line 100nF /16V C T4 4 C T4 7
90 ohm Line Close Tuner
S2
1uF /6.3V 33pF /50V
S2 S2

IP S 2C T4 8 IP-S-ET
Pin3 must be connected to Exposed Pad. C T4 5
C T4 1
1 0 p F / 5 0 VS 2
1 0 p F / 5 0 VS 2 IN S 2C T4 6
100nF /16V
100nF /16V IM-S-ET
Please refer to the reference layout. C T4 3 1 0 p F / 5 0 VS 2 QN S 2C T4 0 100nF /16V Q M -S -E T
C T4 2 1 0 p F / 5 0 VS 2 QP S 2C T3 9 100nF /16V Q P -S -E T

The main features of the IC are show as follow：

 RF frequency range: 950MHZ-2150MHZ.
（12）AMP
TPA3138D2 is a digital amplifier IC, the definition of each PIN is show as follow：
CV6683H-E42 Service Manual

The function of each pin is show as follow：

CV6683H-E42 Service Manual

AMP_PO W ER

AMP_12V

C 128 C 130
C 131
U1 100nF /16V N C /1nF /50V N C /10uF /16V
A M P -E N 1 28
SD PVC C 1
C 132 220nF /16V 2 27
AMPL_O U T F AU LT PVC C 2
C 134 220nF /16V 3 26 C 133 220nF /16V F B4 F B1K/1.5A A M P _ L O U T+
AMP_R EF LIN P BSN 2 LA1 22U H /1.11A
R 19 32dB N C /0R 4 25 1 2 C 135
LIN N O U TN 2
3.3nF /50V
R 97 100K 5 24
+3.3V _S tandby G AIN 0 PGN D 2
R 14 32dBN C /100K
R 98 0R 6 23 F B5 F B1K/1.5A A M P _ L O U T-
G AIN 1 O U TN 1 JA1
AMP_12V R 100 10R 7 22 C 136 220nF /16V 2 LA2 1 C 137 A M P _ L O U T+ 4
AMP_PO W ER AVC C BSN 1 3 L O U T+
C 138 1uF /16V 3.3nF /50V A M P _ L O U T-
8 21 C 146 220nF /16V A M P _ R O U T- 2 L O U T-
AGN D BSP2 22U H /1.11A A M P _ R O U T+ 1 R O U T-
C 147 1uF /16V 9 20 F B6 F B1K/1.5A A M P _ R O U T- R O U T+
R 101 7K5 GVD D O U TP 2 LA3
C 150 1uF /16V R 107 10K 10 19 1 2 C 151 XH -4 A -S P K _ B TL
PLIMIT PGN D 1 22U H /1.11A 3.3nF /50V
C 152 220nF /16V 11 18
AMP_R EF R IN N O U TP 1
C 162 220nF /16V 12 17 C 163 220nF /16V F B7 F B1K/1.5A A M P _ R O U T+
AMPR _O U T R IN P BSP1
13 16 2 LA4 1 C 164
NC PVC C 3 22U H /1.11A 3.3nF /50V
14 15 AMP_12V
P B TL PVC C 4
PAD

TP A 3 1 3 8 D C 165 C 166
29

C 167
100nF /16V N C /1nF /50V N C /10uF /16V

（13）EARPHONE
CV6683H-E42 Service Manual

EARPHONE OUT
C A2
E A R P H O N E -O U TR PH _R IN

+
R7
100uF /16V
C4
22nF /16V J2
1K
1
3 GND
5 O U TR
C A3 4 +3 . 3 V
E A R P H O N E -O U TL PH _LIN 2 NC
O U TL
+

R8
100uF /16V P J -3 2 8 A
C5
22nF /16V
1K

3 2 1
+3 . 3 V _ N o rm a l

GND : R : L
R5

47K
H P_D ET R6 100R

L :MUTE
H :HP IN C A1
N C /10uF /6.3V
NC

（14）USB

+5V _U S B
+5V _U S B
J4
1 J6
U SB1_PW R 2 U SB1-
U SB1_D M 3 U SB1+ U SB1_D - [2] 4
U SB1_D P 4 U SB1_D + [2] 6 GND 3 U SB1+
U SB1_G N D 5 GND2 DP 2 U SB1-
G N D 1D M 1
5 +5V
U SB0_PW R 6 U SB2- U S B 2 . 0 -H
U SB0_D M 7 U SB2+ U SB2_D - [2] SIN G LE U SB
U SB0_D P 8 U SB2_D + [2]
U SB0_G N D
1

D 17 D 18 D 19 D 20 + 5 V _ N o rm a l +5V _U S B
9
s h ie ld _ G N D 10
s h ie ld _ G N D 11
s h ie ld _ G N D 12
N C /ESD _0.2P

N C /ESD _0.2P

N C /ESD _0.2P

N C /ESD _0.2P

s h ie ld _ G N D
2

C 143 + C 139
U S B 2 . 0 -H _ 2 A 100nF /16V 100uF /16V
D O U BLE U SB

（15）Ethernet
CV6683H-E42 Service Manual
U9 P M 4 4 -1 1 B P
M D I _ TP 1 16 J5
[2] M D I _ TP TD + TX+

2
D 21 2 15 R 99 75R _1% 1
ESD _0.05P/N C TC T TC M 2 TX+ 10
3 14 4 TX- C h a s s is 1
M D I _ TN TD - TX- R 106 75R _1% 5 NC1 9
[2] M D I _ TN 4 13 7 N C 2 C h a s s is

1
NC0 NC3 R 105 75R _1% 8 NC3
5 12 3 NC4
NC1 NC2 6 R X+
MD I_R P 6 11 R X-
[2] MD I_R P RD+ R X+

2
C 115 1nF /2K V
D 16 7 10 R 102 75R _1%
ESD _0.05P/N C RCT RCM
8 9 R J 45
MD I_R N RD- R X-
[2] MD I_R N
1
2

2
D 28 D 15
ESD _0.05P/N C C 149 C 118 ESD _0.05P/N C
100nF /16V 100nF /16V
1

M D I _ TP6 5 M D I _ TP
M D I _ TN7 S 8S 4 4 M D I _ TN
8 S 7S 3 3
MD I_R P 9 GG NN DD 1 2 MD I_R P
MD I_R N 10 S 6S 2 1 MD I_R N
S 5S 1

U8
N C / E S B -C S 0 8 0 6 S

（16）RCA AV IN

CON7
V
2 CVBS A V -I N SC _C VBS
1 8 7 AV_IN [2]
GND
6 5 SC _AU L [2]
L
4 4 3 SC _AU R [2]
L+ A V -L I N
3 GND 2 1 R 121
R
6 R+ A V -R I N 0 R P10 10Kx 4
5
2

GND 75R
ESD _0.2P/N C

ESD _0.2P/N C

ESD _0.2P/N C

0
D 44

D 22

D 45

A V 3 -8 . 4 -1 5 C _ Y W R
1

（17）SPDIF OUT
+5 V _ N o rm a l

R 30
CON1
SPD IF O C 41 1 0 0 n F / 1 61V
4

[2] SPD IF _O U T R 46 150R 0R

C OAX O P TI C A L
4

2 SPD IF O 1
SPDIF
VCC 2 1
2

GND
3 GND 3 2 光 纤
C O A X 7 5 R & O P TI C A L N C R 4 5 C 49 D 13 3
75R N C /10pF /50V ESD _0.2P/N C A V 1 -8 . 4 -3 8 C
5

C OAX C 19
1

CON5
100nF /16V O p t ic a l
O P TI C A L
O P TI C A L

NOTE:COAX R45 75R C41 100NF

NOTE:OPTICAL R45 NC C41 NC

（18）HDMI SGINAL
CV6683H-E42 Service Manual
HDMI1(ARC)
J7 +5 V _ H D M I 1
21 1 H D M I 1 _ R X2 P H D M I 1 -R X2 P
21 D A TA 2 + 2 +5 V _ H D M I 1
D A TA 2 _ S H I E L D 3 H D M I 1 _ R X2 N H D M I 1 -R X2 N DN3 H D M I 1 -R X2 P
D A TA 2 - 4 H D M I 1 _ R X1 P H D M I 1 -R X1 P H D M I 1 _ R X2 P 6 5 H D M I 1 _ R X2 P H D M I 1 -R X2 N H D M I 1 -R X2 P [2]
D A TA 1 + 5 H D M I 1 _ R X2 N 7 S 8S 4 4 H D M I 1 _ R X2 N H D M I 1 -R X1 P H D M I 1 -R X2 N [2]
D A TA 1 _ S H I E L D 6 H D M I 1 _ R X1 N H D M I 1 -R X1 N 8 S 7S 3 3 R 131 R 126 H D M I 1 -R X1 N H D M I 1 -R X1 P [2]
22 D A T1 A - 7 H D M I 1 _ R X0 P H D M I 1 -R X0 P H D M I 1 _ R X1 P 9 GG NN DD 1 2 H D M I 1 _ R X1 P 1K H D M I 1 -R X0 P H D M I 1 -R X1 N [2]
22 D A TA 0 + S 6S 2 1 10K H D M I 1 -R X0 P [2]
8 H D M I 1 _ R X1 N 10 H D M I 1 _ R X1 N H D M I 1 -R X0 N
D A TA 0 _ S H I E L D 9 H D M I 1 _ R X0 N H D M I 1 -R X0 N S 5S 1 H D MI1_H PD 2 1 R P12 H D MI1_SD A R 129 2 2 R H D M I 1 -S D A H D M I 1 -C L K P H D M I 1 -R X0 N [2]
D A TA 0 - 10 H D M I 1 _ C L K P H D M I 1 -C L K P 4 3 10Kx 4 H D MI1_SC L R 130 2 2 R H D M I 1 -S C L H D M I 1 -C L K N H D M I 1 -C L K P [2]
C LK+ 11 DN4 6 5 H D M I 1 -D e t e c t H D M I 1 -C L K N [2]

3
C LK_SH IELD 12 H D M I 1 _ C L K N H D M I 1 -C L K N H D M I 1 _ R X0 P 6 5 H D M I 1 _ R X0 P 1 8 7 H D M I 1 -H P D H D M I 1 -S C L

1
Q 12
C LK- 13 C EC H D M I 1 _ R X0 N 7 S 8S 4 4 H D M I 1 _ R X0 N H D M I 1 -S D A H D M I 1 -S C L [ 2 ]
D 33 3904 R 128
23 C EC 14 H D MI_AR C 8 S 7S 3 3 H D M I 1 -H P D H D M I 1 -S D A [ 2 ]
ESD _0.05P/N C D 31 D 32 22K
23 NC 15 9 GG NN DD 1 2 H D M I 1 -H P D [ 2 ]

2
H D MI1_SC L H D MI1_C LKP H D MI1_C LKP ESD _0.05P/N C ESD _0.05P/N C
SC L 16 10 S 6S 2 1

2
H D MI1_SD A H D MI1_C LKN H D MI1_C LKN
SD A 17 S 5S 1

2
C EC _G N D 18 NFX认 证 需 要
20 +5 V P O W E R 19 +5 V _ H D M I 1
H D MI1_H PD
20 H O T PLU G
H D MI

HDMI2
J8 +5 V _ H D M I 2
21 1 H D M I 2 _ R X2 P H D M I 2 -R X2 P
21 D A TA 2 + 2
D A TA 2 _ S H I E L D 3 H D M I 2 _ R X2 N H D M I 2 -R X2 N DN2
D A TA 2 - 4 H D M I 2 _ R X1 P H D M I 2 -R X1 P H D M I 2 _ R X2 P 6 5 H D M I 2 _ R X2 P
D A TA 1 + 5 H D M I 2 _ R X2 N 7 S 8S 4 4 H D M I 2 _ R X2 N H D M I 2 -R X2 P
D A TA 1 _ S H I E L D 6 H D M I 2 _ R X1 N H D M I 2 -R X1 N 8 S 7S 3 3 R 140 H D M I 2 -R X2 N H D M I 2 -R X2 P [2]
22 D A T1 A - 7 H D M I 2 _ R X0 P H D M I 2 -R X0 P H D M I 2 _ R X1 P 9 GG NN DD 1 2 H D M I 2 _ R X1 P 1K H D M I 2 -R X1 P H D M I 2 -R X2 N [2]
22 D A TA 0 + 8 H D M I 2 _ R X1 N 10 S 6S 2 1 H D M I 2 _ R X1 N H D M I 2 -R X1 N H D M I 2 -R X1 P [2]
D A TA 0 _ S H I E L D 9 H D M I 2 _ R X0 N H D M I 2 -R X0 N S 5S 1 H D MI2_H PD 2 1 R P13 H D MI2_SD A R 139 2 2 R H D M I 2 -S D A H D M I 2 -R X0 P H D M I 2 -R X1 N [2]
D A TA 0 - 10 H D M I 2 _ C L K P H D M I 2 -C L K P 4 3 10Kx 4 H D MI2_SC L R 138 2 2 R H D M I 2 -S C L H D M I 2 -R X0 N H D M I 2 -R X0 P [2]
C LK+ 11 DN1 6 5 H D M I 2 -C L K P H D M I 2 -R X0 N [2]

3
C LK_SH IELD 12 H D M I 2 _ C L K N H D M I 2 -C L K N H D M I 2 _ R X0 P 6 5 H D M I 2 _ R X0 P 1 8 7 H D M I 2 -H P D H D M I 2 -C L K N H D M I 2 -C L K P [2]

1
Q 13
C LK- 13 C EC H D M I 2 _ R X0 N 7 S 8S 4 4 H D M I 2 _ R X0 N D 38 3904 H D M I 2 -C L K N [2]
23 C EC 14 U A R T_ E N 8 S 7S 3 3 ESD _0.05P/N C D 36 D 37 H D M I 2 -S C L
23 NC 15 9 GG NN DD 1 2 H D M I 2 -S C L [ 2 ]

2
H D MI2_SC L H D MI2_C LKP H D MI2_C LKP ESD _0.05P/N C ESD _0.05P/N C H D M I 2 -S D A
SC L 16 10 S 6S 2 1 H D M I 2 -S D A [ 2 ]

2
H D MI2_SD A H D MI2_C LKN H D MI2_C LKN H D M I 2 -H P D
SD A 17 S 5S 1 H D M I 2 -H P D [ 2 ]

2
C EC _G N D 18
20 +5 V P O W E R 19 +5 V _ H D M I 2
H D MI2_H PD
20 H O T PLU G
H D MI

HDMI3
J9 +5 V _ H D M I 3
21 1 H D M I 3 _ R X2 P H D M I 3 -R X2 P
21 D A TA 2 + 2
D A TA 2 _ S H I E L D 3 H D M I 3 _ R X2 N H D M I 3 -R X2 N DN5
D A TA 2 - 4 H D M I 3 _ R X1 P H D M I 3 -R X1 P H D M I 3 _ R X2 P 6 5 H D M I 3 _ R X2 P H D M I 3 -R X2 P
D A TA 1 + 5 H D M I 3 _ R X2 N 7 S 8S 4 4 H D M I 3 _ R X2 N H D M I 3 -R X2 N H D M I 3 -R X2 P [2]
D A TA 1 _ S H I E L D 6 H D M I 3 _ R X1 N H D M I 3 -R X1 N 8 S 7S 3 3 R 127 H D M I 3 -R X1 P H D M I 3 -R X2 N [2]
22 D A T1 A - 7 H D M I 3 _ R X0 P H D M I 3 -R X0 P H D M I 3 _ R X1 P 9 GG NN DD 1 2 H D M I 3 _ R X1 P 1K H D M I 3 -R X1 N H D M I 3 -R X1 P [2]
22 D A TA 0 + 8 H D M I 3 _ R X1 N 10 S 6S 2 1 H D M I 3 _ R X1 N H D M I 3 -R X0 P H D M I 3 -R X1 N [2]
D A TA 0 _ S H I E L D 9 H D M I 3 _ R X0 N H D M I 3 -R X0 N S 5S 1 H D MI3_H PD 2 1 R P14 H D MI3_SD A R 122 2 2 R H D M I 3 -S D A H D M I 3 -R X0 N H D M I 3 -R X0 P [2]
D A TA 0 - 10 H D M I 3 _ C L K P H D M I 3 -C L K P 4 3 10Kx 4 H D MI3_SC L R 123 2 2 R H D M I 3 -S C L H D M I 3 -C L K P H D M I 3 -R X0 N [2]
C LK+ 11 DN6 6 5 H D M I 3 -C L K N H D M I 3 -C L K P [2]
1

3
C LK_SH IELD 12 H D M I 3 _ C L K N H D M I 3 -C L K N H D M I 3 _ R X0 P 6 5 H D M I 3 _ R X0 P 1 8 7 H D M I 3 -H P D H D M I 3 -C L K N [2]

1
Q 14
C LK- 13 C EC H D M I 3 _ R X0 N 7 S 8S 4 4 H D M I 3 _ R X0 N D 41 3904 H D M I 3 -S C L
23 C EC 14 8 S 7S 3 3 H D M I 3 -S D A H D M I 3 -S C L [ 2 ]
ESD _0.05P/N C D 39 D 40
23 NC 15 9 GG NN DD 1 2 H D M I 3 -S D A [ 2 ]
2
H D MI3_SC L H D MI3_C LKP H D MI3_C LKP ESD _0.05P/N C ESD _0.05P/N C H D M I 3 -H P D
SC L 16 10 S 6S 2 1 H D M I 3 -H P D [ 2 ]
2

H D MI3_SD A H D MI3_C LKN H D MI3_C LKN

SD A 17 S 5S 1

2
C EC _G N D 18
20 +5 V P O W E R 19 +5 V _ H D M I 3
H D MI3_H PD
20 H O T PLU G

H D MI

CEC & ARC UART

Q 10 Q 11
H D MI2_SC L 2 3904 3 2 3904 3H D MI2_SD A
U A R T-R X U A R T-TX
H D MI_AR C C 148 1uF /6.3V TP 8
H D M I -A R C [ 2 ] U A R T-TX 1
AR C U A R T-TX
D 30 1 E S2 D _ 0 . 0 5 P / N C
1

U A R T_ E N R 1 3 5 1K U A R T_ E N R 1 3 6 1K TP 9
U A R T-R X 1
U A R T-R X
C EC
1

R 145 100R
H D M I -C E C [ 2 ] D 35 R 134 R 137 TP 1 0
C EC &AR C ESD _0.05P/N C 1K 1K 1
D 34 1 E S2 D _ 0 . 0 5 P / N C GND
2

(19) WIFI
TO MT7603U 2T2R WIFI
Operating Frequency:
2.4~2.4835 GHz ISM Band
W I F I -P O W E R

1TP 1 2 1 5 J1
GND RW5 4K7 +3 . 3 V _ S t a n d b y
1
W OW 1TP 7 8 W OW GND2 2 W OW
8 W OW 3 W IF I_E NR W 4 1K W OW [2]
W IF I_E N 1TP 1 2 1 7 W I F I _ E N 9 GN D 4 EN 4 W I F I -R e s e t [ 2 ]
G N D 3G N D 1 5 W iF i+ RW8 N C / 4 K 7+3 . 3 V _ S t a n d b y
GND 1TP 1 2 1 9 D+ 6 W iF i- NC
D- 7 +5 V
W iF i+ 1TP 1 2 1 6 W iF i+ +5 V

W iF i- 1TP 1 2 1 8 W iF i- G H -7 A B
CW2
+5 V 1TP 1 2 2 0 +5 V N C /1uF /6.3V
NC

RW7 0R

W iF i+ 4 L1 3
U SB3_D + [2]
W iF i- 1 2
S D C W 2 0 1 2 -2 -9 0 0 TF / N C U SB3_D - [2]
2

RW6 0R
D2
ESD _0.2P/N C
ESD _0.2P/N C
D1
1

(20) CI
CV6683H-E42 Service Manual

PCMCIA PCMCIA POWER

CN1
PC MC IA SO KET

TS 1 -C L K 20 30 PC M_D 0 + 5 V _ N o rm a l +5V _P C MC IA
TS 1 _ V L D 19 20 30 31 PC M_D 1
TS 1 _ S Y N C 46 19 35 1 31 32 PC M_D 2
TS 1 _ D 0 47 46 36 2 32 2 PC M_D 3
TS 1 _ D 1 48 47 37 3 2 3 PC M_D 4
TS 1 _ D 2 49 48 38 4 3 4 PC M_D 5
TS 1 _ D 3 50 49 39 5 4 5 PC M_D 6
TS 1 _ D 4 53 50 40 6 5 6 PC M_D 7
TS 1 _ D 5 54 53 41 7 6
TS 1 _ D 6 55 54

CARD DETECT
42 8
TS 1 _ D 7 56 55 43 9 29 PC M_A0
56 44 10 29 28 PC M_A1
TS 0 _ C L K 57 45 11 28 27 PC M_A2
TS 0 _ V L D 62 57 46 12 27 26 PC M_A3
TS 0 _ S Y N C 63 62 47 13 26 25 PC M_A4
C7 TS 0 _ D 0 64 63 48 14 25 24 PC M_A5
10pF /50V/N C TS 0 _ D 1 65 64 49 15 24 23 PC M_A6 + 5 V _ N o rm a l
TS 0 _ D 2 66 65 50 16 23 22 PC M_A7
TS 0 _ D 3 37 66 51 17 22 12 PC M_A8
TS 0 _ D 4 38 37 52 18 12 11 PC M_A9
TS 0 _ D 5 39 38 53 19 11 8 PC M_A10
TS 0 _ D 6 40 39 54 20 8 10 PC M_A11 +5V _P C MC IA R 12 R 18
TS 0 _ D 7 41 40 55 21 10 21 PC M_A12 1K 1K
41 56 22 21 13 PC M_A13 CI CI
+5V _P C MC IA PC M_R EG _N 61 57 23 13 14 PC M_A14 PC M_C D 1_N R 10 10K C I PC M_C D _N
PC M_C E_N 7 61 58 24 14 R 13
42 7 59 25 36 PC M_C D 1_N 4K7 PC M_C D 2_N R 11 10K C I R9
PC M_O E_N 9 42 60 26 36 67 PC M_C D 2_N CI 100K C6
R 15 PC M_W E_N 15 9 61 27 67 CI 1nF /50V
4K7 PC M_IO R D _N 44 15 62 28 43 CI
PC M_IO W R _N 45 44 63 29 43 59 P C M _ W A I T_ N
CI 60 45 64 30 59 33
PC M_IR Q A_N 16 60 65 31 33 18 PCM_CD1_N PCM_CD2_N PCM_CD_N
16 66 32 18 52 +5V _P C MC IA GND GND L 0V
67 33 52 GND NC H 2.5V
68 68 34 58 PC M_R ESET NC GND H 2.5V
34 68 58 NC NC H 5V
35 34 51
1 35 51 17
1 17
69
70

C9 C8
CI 100nF /16V 10uF /6.3V
69
70

CI CI

4. Common problem solving：

（1） Power Units Problem Solving:
CV6683H-E42 Service Manual

（2）Display Unit (black screen)：

(3) Audio Unit (no sound)

CV6683H-E42 Service Manual

(4) Certain signal port cannot work normally

（4.1）Function Unit(ATV/DTV broke down)
CV6683H-E42 Service Manual

（4.2）Function Unit (ATV with the image but no sound)

CV6683H-E42 Service Manual

(5) Function Unit （PC problems）

CV6683H-E42 Service Manual

(6) Function Unit （HDMI）

5. The Television updates process

USB update：
（1）Copy the BIN file to USB dish’s root directory.
（2）Connect the USB to the USB port on TV; it will be automatically upgrade
by power on.