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Page 29 of 40 

Report No.: ACSCBAV13004 

 
  

 

 

 

 

 

Clause 

Requirement + Test 

Result - Remark 

Verdict

 

TRF No. IEC60065K 

No. 

Component  Fault  test 

voltage 
(V) 

test 
time 

fuse 

fuse current  
measured (A)

Result 

17 CE543 

S/C 264 10mins F501  0.026

↔0.074 Unit shutdown and cycled, 

recoverable, NCD, NB, NH. 

18 R541 

S/C 264 10mins F501  0.026 

Unit shutdown, recoverable, 
NCD, NB, NH. 

Measured on main board 

19 U701 

pin 2-39 

S/C 264  10mins F501  0.047 

Unit shutdown, recoverable, 
NCD, NB, NH. 

20 Speaker  S/C 264 5hours 

18mins

F501 

0.050 

Unit shutdown, recoverable, 
NCD, NB, NH. 

21 Max. 

non-

clipped 
output 
power 

- 264 

6hours 
54mins

F501 

0.962 

Similar normal operated. 
NCD, NB, NH. 
LIF502 coil: 55.3K 
U541 body: 89.6K 
T541 coil: 78.9K 
PWB near T541: 70.0K 
Heatsink HS1: 99.7K 
Enclosure plastic, outside 
(near power board): 41.7K  

22 

C177 

S/C 

264 

1s 

-- 

0 

Unit shutdown, CD (R13), 
TRSR with two more times, 
NH. 

23 U17 

Pin 29 - 9 

S/C 

264 

10mins -- 

0.593 

Unit power decreased to 
15.66W, recoverable, NCD, 
NH. 

24 U17 

Pin 29 - 31 

S/C 

264 

10mins -- 

0.593 

Unit power decreased to 
15.66W, recoverable, NCD, 
NH. 

25 Low 

frequency 
speaker 

S/C 264  3hours

28mins

-- 

0.593 

Unit power decreased to 
15.66W, recoverable, NCD, 
NH. 
L11 body: 45.9K 
U11 body: 45.3K 
Front enclosure outside near 
PWB: 13.4K 

26 High 

frequency 
speaker 

S/C 264  2hours

5mins

-- 

0.593 

Unit power decreased to 
15.66W, recoverable, NCD, 
NH. 
L11 body: 45.7K 
U11 body: 45.2K 
Front enclosure outside near 
PWB: 11.8K 

Page 30 of 40 

Report No.: ACSCBAV13004 

 
  

 

 

 

 

 

Clause 

Requirement + Test 

Result - Remark 

Verdict

 

TRF No. IEC60065K 

No. 

Component  Fault  test 

voltage 
(V) 

test 
time 

fuse 

fuse current  
measured (A)

Result 

27 

USB port 

S/C 

264 

10mins -- 

0.170 

Unit shutdown, recoverable, 
NCD, NH. 

28 Max. 

non-

clipped 
output 
power 

- 264 

6hours
35mins

-- 

3.57 

Unit power increased to 
94.25W, recoverable, NCD, 
NH. 
L11 body: 77.0K 
U11 body: 82.0K 
Front enclosure outside near 
PWB: 42.9K 

 

Winding temperature rise measurements 

 

 

Ambient temperature t1 (

o

C) .................................. : - 

— 

 

Ambient temperature t2 (

o

C) .................................. : - 

— 

 

Rated supply voltage: 100-240V 

Pollution degree.. : 2 

Material Group.... :  IIIb 

2 N force on internal parts applied: 

Pass 

- 

30 N force on outside of conductive enclosure applied: 

Pass 

- 

 
Location 

Working Voltage

Clearance (mm) 

Creepage (mm)

CTI 

 

V peak

V rms

Min 

Actual 

Min 

Actual

< 175

For Subwoofer (SB26 SUB) 
Circuits conductively connected to the mains (use Tables 8, 9 and 11): see note below. 

Opposite pattern traces before fuse 
F501 on PCB, as basic 

<420 <250  2.0  3.6  2.5  3.6  <175

Pri. fuse F501, pattern traces on 
PCB, as basic 

<420 <250  2.0  3.1  2.5  3.1  <175

Pri. pattern traces to secondary 
pattern traces (near screw trace), as 
reinforced 

<420 <250  4.0  7.3  5.0  7.3  <175

Pri. pattern traces to secondary 
pattern traces (near CY502), as 
reinforced 

<420 <250  4.0  7.2  5.0  7.2  <175

Pri. pattern traces to secondary 
pattern traces (near CY504), as 
reinforced 

<420 <250  4.0  7.3  5.0  7.3  <175

Pri. pattern traces to secondary 
pattern traces (near CY505), as 
reinforced 

<420 <250  4.0  7.4  5.0  7.4  <175

HS1 to side metal chassis, as 
reinforced 

475 

max. 

<250 

(223)

 

4.2 10.2 5.0 >10.2

<175

Primary solder pin to bottom metal 
chassis, as reinforced 

475 

max. 

<250 

(223)

 

4.2 7.5 5.0 >7.5 

<175

Page 31 of 40 

Report No.: ACSCBAV13004 

 
  

 

 

 

 

 

Clause 

Requirement + Test 

Result - Remark 

Verdict

 

TRF No. IEC60065K 

Switching transformer T541, core considered as floating. 

Pri. Coil to Core, 

as basic

475 

max. 

<250 

(223)

 

2.1 3.5 2.5 3.5 

<175

Sec. Coil to Core, 

as supplementary

475 

max. 

<250 

(223)

 

2.1 3.5 2.5 3.5 

<175

Pri. pin to Sec. pin via core,

as reinforced

475 

max. 

<250 

(223)

 

4.2 7.0 5.0 7.0 

<175

Sec. pin of CY504 to core,

as reinforced

475 

max. 

<250 

(223)

 

4.2 4.5 5.0 >4.5 

<175

Sec. pin of CY505 to core,

as reinforced

475 

max. 

<250 

(223)

 

4.2 5.0 5.0 >5.0 

<175

Notes: 
1. Secondary circuits of Class II apparatus which have connector terminals that could be earthed (e.g. antenna signal input), are 
subjected to the requirements for circuits conductively connected to the mains in Tables 8 and 9. 
2. Floating secondary circuits of Class I apparatus which have connector terminals that could be earthed (e.g. antenna signal input), 
are subjected to the requirements for circuits conductively connected to the mains in Tables 8 and 9 unless the floating secondary 
circuit is separated from the primary circuits by an earthed metal screen (e.g. in the power transformer), or the floating secondary 
circuit is connected to earth via a component such as a capacitor. 
3. For insufficient clearances and creepage distances from secondary to secondary circuits and from secondary circuits to earth, see 
Cl. 4.3.1, 4.3.2 and 11.2. 
4. If the minimum creepage distance in Table 11 is less than the minimum required clearance in Tables 8, 9 or 10 as required, then 
the value for clearance is used as the minimum creepage distance . 
"Min" = minimum required. 
"Actual = Actual dimensions measured. 
5. Mylat sheet was affixed on side metal chassis. 

 

Page 32 of 40 

Report No.: ACSCBAV13004 

 
  

 

 

 

 

 

Clause 

Requirement + Test 

Result - Remark 

Verdict

 

TRF No. IEC60065K 

 

 

Component 

Manufacturer/ 

trademark 

Type/model 

Value / rating 

Standard 

Approval/ 

Reference 

AC ADAPTOR  TCL Technoly 

Electronics 
(Huizhou) Co., 
Ltd. 

TNUA2402703 

Input: 100-240V~, 
50/60Hz, 143-
185VA; Output: 
24Vdc, 2.7A. Class 
II, Tma=45℃ 

IEC60065 (7

th

 

ed.)+A1+A2; 
EN60065 (7

th

 

ed.)+A1+A11
+A2+A12 

Issued by 
TUV SUD 
with CB 
Cert. No. 
SG-TN-
02668, CB 
Rpt. No. 
211-400194-
000 

Plastic 
enclosure 

Interchangeable Interchangeable  Min. HB, Min. 70℃  UL94 UL 

Switching 
Transformer  
/ T541 

Huizhou 
Sunshine 
Electronics Co., 
Ltd. 

BCK-AL140 
(36-TRF342-SX0-
E) 

Open, concentric 
winding 

IEC60065 

Tested in 
unit 

Bobbin material  Chang Chun 

Plastics Co., Ltd. 

T375HF 

Phenolic, V-0, 
min. 0.85mm, 
150°C 

UL94 UL 

-Alt. use-  Sumitomo 

Bakelite Co., Ltd. 

PM-9820 

Phenolic, V-0, 
min. 0.85mm, 
150°C 

UL94 UL 

Insulation tape  Jingjiang Yahua 

Pressure 
Sensitive Glue 
Co., Ltd. 

CT 130°C 

UL510 

UL 

-Alt. use- 

Switching  
Transformer  
/ T541 

Shenzhen 
Haixinxing 
Electronics Co., 
Ltd. 

BCK-03EC35 
(36-TRF342-XX0-
A) 

Open, concentric 
winding  

IEC60065 

Tested in 
unit 

Bobbin material  Chang Chun 

Plastics Co., Ltd. 

T375HF 

Phenolic, V-0, 
min. 0.85mm, 
150°C 

UL94 UL 

Insulation tape  Jingjiang Yahua 

Pressure 
Sensitive Glue 
Co., Ltd. 

CT 130°C 

UL510 

UL 

-Alt. use-  Jingjiang Fuwei 

Adhesive 
Product Co., Ltd. 

FW 130°C 

UL510 

UL 

-Alt. use-