Hisense HSM515AV User manual

SERVICE MANUAL
HSM515AV
51CM CTV
SEP04 SERVHSM515AV

1
Hisense UOC 2004-10-15
21 ¨ & 14 ¨ Color TV Service Manual
Catalogue
1. Technology Specification and Feature…..……………………… Page 1
2. The IC list …………………………………………………… Page 2
3. Signal process……………………………………………………… Page 2
4. The horizontal and vertical circuit………………………………… Page3
5. Power supply……………………………………………………….. Page 3
6. Appendix 1…………………………………………………………..Page 4
7. Appendix 2....………………………………………………………..Page 9
1．Technology Specification and Feature
I
2C Bus Control
Auto Search
Off/On Timer
Rated Voltage: AC 140V-250V 50Hz/60Hz
Sound output: 5 W×2
Screen size Picture tube 54 cm
System: Color Sound
RF PAL B.G
AV NTSC
Channel coverage: VHF Low channel (VL) =48.25 to 147.25 MHz
VHF high channel (VH) =154.25 to 463.25 MHz
UHF channel U) =471.25 to 863.25 MHz
IF 38.9MHz
External input/output Video/Audio(L/R)2 set input
S-Video input
YUV input
Video/Audio(L/R) 1 set output

2
2. IC list
Table 1, the main IC and functions
Number Function IC Remark
1 Power supply KA5Q0765RT N611
2 CPU + SIGNAL PROCESSER OM8370/TDA9370 N301
3 Field driver STV9302A N401
4 Sound driver AN7522N N161
5 AV SWITCH TC4052BP N801 (Video)
N121(sound)
6 Memory AT24C08 N702
7 Photo-coupler HS817B N504
8 IR-receiver HS0038A N1503
9 8V Regulator L7808CV N503
10 5V Regulator L7805CV N505
3. Signal process
The TV signal enters into tuner (A201) from cable or antenna. Pin 10 and pin 11 of N301 are
combined to select the band. Pin 4 of N301 outputs PWM tuning signal. The 38.9MHz IF signal is
coupled to V308 (pre-amplify) and then to SAWF (Z301). After processed in the SAWF, the 38.9MHz
signal gets to pin 23 and pin 24 of OM8370. The IF circuit in OM8370 includes such unit as the AGC
amplifying circuit, 38.9MHz oscillator, PLL video demodulator, video amplifier, IF identify circuit
and AFT circuit. The demodulated signal (CVBS) comes from the pin 38 of OM8370, the sound signal
comes from the pin 44.
The internal CVBS signal needs norm identification then outputs from pin 38 of OM8370, via the
trap circuit (composed of the V351, Z351, Z354,V352 and so on) feeds back to the pin 40 of OM8370.
The RGB signal comes from pin51, Pin52, Pin53 of OM8370, and outputs to the CRT board.
The internal sound signal comes from pin 44 of OM8370 and then input to pin 1 and pin 12 of
HEF4052BP. The sound signals from RF and AV are selected in it. The selected signal is output from
Pin 3 and pin13, then input AN7522N(sound emplifier) or output from AV terminals.

3
4. Horizontal and vertical circuit:
Through Synchronous separating circuit, the video signal is divided into horizontal-
Synchronizing signal and Vertical-Synchronizing signal. The horizontal-Sync pulse coming from pin
33 is transferred to the horizontal-drive transistor.
The cathode driving voltage 180V vertical drive voltage +15V and –15V are all generated from
FBT.
The vertical sawtooth waveform is generated on the pin 21 and 22, and then enters the vertical
amplifier STV9302A.
STV9302A is a 7 pins vertical deflection circuit (2 Amperes) for DC-coupled 90° or 110°
deflection systems with frame frequencies from 50 up to 120 Hz. one supply voltage for the scanning
and second voltage supply for the flyback are needed.
The vertical drive currents of OM8370 pins 21 and 22 are connected to input pins 1 and 7 of
STV9302A. The vertical scanning output is coming from pin 5 and feed back to pin 1 by R405. The
supply voltage is ±15V at pin 2 and pin 4. C406 is the pump capacitor.
5. Power supply
The IC of KA5Q0765RT is adapted in this chassis; it is the product of Fairchild. It supplies four
DC voltages, one is the +B＝110V, another is Hcc＝26V, the third is 13V (the sound drive voltage),
the fourth is +16V. The +16V can generate the +8V, +5V and +3.3V by the special generators.

4
Appendix 1: IC illustration
Fig.1 OM8370 illustration
Pin1: Standby control,“1”is on,“0”is off.
Pin2: SCL.
Pin3: SDA.

5
Pin4: Tuning PWM output.
Pin5: Auto AV control SW, connected with the SCART 8th pin. Input. The rising edge or the falling
edge operates.
Pin6: Key board input.
Pin7: Volume
Pin8: Mute control,“1”is mute,“0”is off.
Pin9: Pin12、Pin18、Pin30、Pin35、Pin41、Pin55: GND.
Pin10: BAND1 control output.
Pin11: BAND2
Pin13: SECAM PLL, connected with a capacitance (No use in this type).
Pin14: +8V power source supply.
Pin15: Using a capacitor of 220n in series to GND, This pin decouples the internal digital supply
voltage of the video processor and minimizes the disturbance to the sensitive analogue parts.
Pin16: Phase-2 control loop, this pin requires a capacitor at 2.2nF (C) in series to GND.
Pin17: Phase-1 control loop, the loop filter connected to pin 17 is suitable for various signal conditions
like strong/weak and VCR signal. This is achieved by switching of the loop filter time constant
by changing the Phase-1 output current.
Pin18: GND.
Pin19: Bandgap decoupling, the bandgap circuit provides a very stable and temperature independent
reference voltage. This reference voltage (4.0 V) ensures optimal performance of the analogue
video processor part of the OM8370 and is used in almost all functional circuit blocks.
Pin20: East-west pillow signal output.
Pin21: Pin22：Vertical drive output.
Pin23: Pin24：IF input。
Pin25: Reference current, This pin requires a resistor to ground. The optimal reference current is
100mA which is determined by this resistor. The 100mA reference current should not be changed
because the geometry processor is optimised for this current. Furthermore the output current of
vertical drive and EW are proportional to this current.
Pin26: Vertical sawtooth, This pin requires a capacitor to ground of 100nF
Pin27: AGC output. This output is used to control (reduce) the tuner gain for strong RF signals.
Pin28: Audio de-emphasis.
Pin29: Sound decoupling. This pin requires a capacitor connected to ground. The pin acts as a low
pass filter needed for the DC feedback loop.

6
Pin30: GND.
Pin31: Sound loop filter.
Pin32: AVL filter.
Pin33: Horizontal drive signal output, needs a resistor in series to +8V.
Pin34: Sandcastle output/flyback input,
Pin35: External audio input, this pin should be grounded in this chassis.
Pin36: EHT tracking/ overvoltage protection. If something is wrong, the anode high voltage rises, the
heater voltage will rise too. When the rising voltage arrive some limit, the V406 works, the
voltage of pin 36 will exceed 3.9V, the OM8370 will stop working.
Pin37: PLL loop filter.
Pin38: CVBS output. Monitor or RF videos can be selected.
Pin39: +8V supply source.
Pin40: CVBS input
Pin42: Y signal input.
Pin43: C signal input.
Pin44: Main audio output, this pin is connected to the TDA9859.
Pin45: RGB signal input blanking.
Pin46, Pin47, Pin48: RGB signal input.
Pin49: ABL. It means beem current limiter input. R410 is the control resister.
Pin50: Black current input from the CRT board.
Pin51, Pin52, Pin53: RGB drive signal output to the CRT board.
Pin54: +3.3V.
Pin55: GND.
Pin56: +3.3V.
Pin57, Pin58, Pin59: 12MHz crystal。
Pin60: Reset, NC in this chassis.
Pin61: +3.3V
Pin62: NC.
Pin63: This pin is connected to the HEF4094, Functions expanding.
Pin64: IR signal input.

7
Fig.2 HEF4052BP illustration

8

9
Fig. 3 STV9302A illustration
1INVERTING INPUT 5 VER OUTPUT
2Vcc 6 OUTPUTSTAGEVCC
3PUMP UP OUT 7 NON INV.PUT
4GND
Fig. 4 AN7522N illustration

10
Fig. 5 KA5Q0765RT illustration

11
Appendix 2: ADJUST METHOD
6.1 Main power +B setting
Receive standard color pattern RF signal，set picture to “Standard Mode”. Adjust VR501，
to get +B (VD542 -) voltage =110 V
6.2 I2C bus control adjustment methed:
How to enter and exit factory mode(with customer’s remote controller)
1.Press [menu] key Ædisplay picture menu
2.Press digital key “6” “4” “8” “3” Æ display “ M” .
Push [standby] key one time to exit factory mode and return to normal.
How to select menus in factory mode:
In factory mode ( “M” mode), there are ten menus totally. Menu1 to Menu4 can be selected directly, but Menu
5 to Menu0 must be select by these steps:
1. Press “CALL ”key, to call “M”.
2. Press “LOCK” key, then press any one numeric key from 5 to 0.
For example, to select Menu 7, you should press “call” key and LOCK key in turns, then press the numeric
key 7.
Menu function introduction:
Menu 1 Preset value
ITEM 50Hz 60Hz Definition
V SLOPE 32 32 Vertical linearity
V SHIFT 32 32 Vertical position
V SIZE 32 32 Vertical size
V SC 32 32 Vertical S correction
H SHIFT 32 32 Horizontal position
Menu2
ITEM Preset value Definition
RF AGC 20 RF AGC adjust, when
the signal is poor, you
can decrease the value to
increase the gain
SHIPPING For factory use

12
Menu3
Note:
1.BT/CT can not be remembered.
2.RB/GB/RD/GD/BD/SB can be remembered.
Menu4
ITEM Preset value Definition
BT 75 Bright in W/B mode
CT 75 Contrast in W/B mode
SC Screen mode (press
VOL+/- or CH+/- key to
enter or exit ). Adjust
Screen knob on FBT to
adjust the bright of the
line
RB 32 Red bias adjust
GB 32 Green bias adjust
RD 32 Red drive adjust
GD 32 Green drive adjust
BD 32 Blue drive adjust
SB 40 Sub-bright adjust
Preset valueITEM
50Hz 60Hz
Definition
OSD V 32 OSD vertical position
OSD H 32 OSD horizontal position

13
Menu5
Menu6
ITEM Preset value Definition
MODE STANDARD Picture mode selection
You can select four modes: STANDARD,
VIVID, MILD and USER
BRIGHT 75 Preset Bright value for the mode you
have selected above
CONTRAST 75 Preset contrast value
COLOR 50 Preset color value
SHARP 50 Preset sharpness value f
SC BRIGHT 20 Preset bright value for screen mode
COOL 10 The offset in cool mode
WARM 10 The offset in bright mode
Y DELAY PAL 8 Y signal delay in PAL system
Y DELAY NTSC 8 Y signal delay in NTSC system
Y DELAY AV 8 Y signal delay in AV mode
ITEM Preset value Definition
OSO 1 Overscan Switch Off.
0: not available
1: available
AGC SPEED 1 0:slow AGC action. IF-AGC capacitor is 3.1uF.
1: normal. IF-AGC capacitor is 2.2uF.
2:fast AGC action. 3 times speed than normal
3:fast AGC action. 6 times speed than nomal.
FFI 0 Fast Filter IFPLL. 0:Normal, 1: Fast
FSL 0
FMWS 0 FM search Window width
0:±225KHz 1: ±450KHz
RPO 1
NTSC MATRIX 0 0: JAPAN 1: USA
IFS REDUCE 0 0: Decrease the sensitivity of If while search
1:Not decrease the sensitivity of IF while search
VOL PIN 0 0: OC gate output 1：PULL-PUSH output
SOFT CLIP 0
PEAK WHITE 0
CORING 0

14
Menu7
Menu8
ITEM Preset value Definition
IFFS 38.9MHz IF Frequency Selection
DK OFF DK system selection
I OFF I system selection
BG ON BG system selection
M OFF M system selection
SIF PRI ON SIF Priority
AV2 ON AV2 selection
S-VIDEO ON S-video selection
YUV ON YUV selection
VOL ADJ POINT 1 VOL curve point selection
VOL ADJ VALUE 10 VOL curve value adjusting on the selected
point
ITEM Preset value Definition
CATHODE 4 Cathode adjusting. From 0 to 15
UOC VOL 0 Must be 0. When set 1, AV volume will be abnormal
FM ATT 45 UOC output volume adjusting. From 0-63
CHINESE 1 Chinese OSD selection

15
Menu9
Menu0
ITEM Preset value Definition
BAND 2 Must be 2 according to the TUNER
START ON 0 0: Last memory mode: TV_mode
1：Power on standby mode。
LOGO OFF No use
ON DELAY 10 Power on delay time adjust
ON DELAY M 5 Preset on delay time
CURTAIN OFF
OSD FORM 0 From 0 to 3
AV MEM 0N AV memory
BLUE SCREEN ON Off: Black screen On: Blue screen
S-VHS SW 1/0 S-VHS switch 0: S-VHS is independent
1:S-VHSisparalleledtoAV1
OFF-SET 32 IF demodulator OFF-SET value. The default value is
32.
ITEM Preset value Definition
SUB CON 63 SUB CONTRAST
SUB COLOR 63
SUB SHARP 63
SUB TINT 63
FS MODE 0 FS TUNER (No use )
FS-VL-H 0 Frequency point setting in FS MODE (No use )
FS-VL-L 0 Frequency point setting in FS MODE (No use )
FS-VH-H 0 Frequency point setting in FS MODE (No use )
FS-VH-L 0 Frequency point setting in FS MODE (No use )

SN. QTY. UNIT
11PC
21PC
31PC
41PC
51PC
61PC
71PC
83PC
91PC
10 3PC
11 1PC
12 1PC
13 1PC
14 1PC
15 1PC
16 2PC
17 2PC
18 3PC
19 1PC
20 1PC
21 1PC
22 1PC
23 2PC
24 3PC
25 1PC
NAME TYPE LOCATION
CERAMIC CAPACITOR CT1-50V-F-10n-Z C162 C302 C312
CERAMIC CAPACITOR CT1-500V-B-100p-K C482
CERAMIC CAPACITOR CT1-50V-B-1000p-K C402 C481
CERAMIC CAPACITOR CT1-50V-B-330p-K C911
VARIABLE RESISTOR WI06-2-2-20K VR501
METAL OXIDE FILM RESISTOR RY27-6-5W-3R9-J R458
METAL OXIDE FILM RESISTOR RY27-2W-10K-J R467 R703
METAL OXIDE FILM RESISTOR RY27-2W-22K-J R556
METAL OXIDE FILM RESISTOR RY27-2W-12K-J R915 R925 R935
METAL OXIDE FILM RESISTOR RY27-2W-56R-J R530
METAL OXIDE FILM RESISTOR RY27-2W-270R-J R454 R546
METAL OXIDE FILM RESISTOR RY26-1W-1R2-J R406
METAL OXIDE FILM RESISTOR RY27-2W-5R6-J R941
METAL OXIDE FILM RESISTOR RY26-1W-22R-J R300A
FUSE RESISTOR RF10-1W-R47-J △R165 R470 R472
METAL OXIDE FILM RESISTOR RY26-1W-1K0-J R466
FUSE RESISTOR RF10-1W-R27-J R555 R565 R566
FUSE RESISTOR RF10-1W-1R8-J △R480
R486
FUSE RESISTOR RF10-1/2W-1R0-J R473B
RT14-1/4W-100R-JCARBON FILM RESISTOR
PX20030-4C △A1/A2
CARBON FILM RESISTOR RT13-1/6W-300R-J R913
CARBON FILM RESISTOR RT13-1/6W-10K-J R396
MAIN PCB
CARBON FILM RESISTOR RT13-1/6W-22R-J R914
CARBON FILM RESISTOR RT13-1/6W-3K3-J R735

26 1PC
27 1PC
28 2PC
29 1PC
30 1PC
31 4PC
32 2PC
33 1PC
34 2PC
35 2PC
36 1PC
37 1PC
38 1PC
39 1PC
40 1PC
41 1PC
42 1PC
43 3PC
44 1PC
45 1PC
46 1PC
47 2PC
48 1PC
49 1PC
50 3PC
51 1PC
POLESTER CAPACITOR CL21X-100V-3n3-J C321
POLESTER CAPACITOR CL21X-63V-100n-J C338
POLESTER CAPACITOR CL21X-63V-220n-J C331 C334 C404
ALUMINUM ELECTROLYTIC CAPACITOR CD110-250V-10u-M C477 C941
ALUMINUM ELECTROLYTIC CAPACITOR CD293-400V-150u-M C507
ALUMINUM ELECTROLYTIC CAPACITOR CD288-160V-100u-M C528B
ALUMINUM ELECTROLYTIC CAPACITOR CD110-160V-10u-M C458
ALUMINUM ELECTROLYTIC CAPACITOR CD110-50V-2u2-M C755
ALUMINUM ELECTROLYTIC CAPACITOR CD110-50V-1u0-M C153 C813 C825
ALUMINUM ELECTROLYTIC CAPACITOR CD110-25V-1000u-M C522
ALUMINUM ELECTROLYTIC CAPACITOR CD110-35V-330u-M C530
ALUMINUM ELECTROLYTIC CAPACITOR CD110-25V-2200u-M C524
ALUMINUM ELECTROLYTIC CAPACITOR CD110-25V-100u-M C471
ALUMINUM ELECTROLYTIC CAPACITOR CD110-25V-470u-M C161
ALUMINUM ELECTROLYTIC CAPACITOR CD110-16V-47u-M C723A
ALUMINUM ELECTROLYTIC CAPACITOR CD110-16V-100u-M C361
CERAMIC CAPACITOR CT81-2KV-E-1000p-K C512 C943
ALUMINUM ELECTROLYTIC CAPACITOR CD110-16V-10u-M C307 C751
CERAMIC CAPACITOR CT81-2KV-B-470p-K C543 C456
CERAMIC CAPACITOR CT81-2KV-B-680p-K C527
CERAMIC CAPACITOR CT81-1KV-B-470p-K C529
CERAMIC CAPACITOR CT81-1KV-B-1000p-K C503 C504 C505 C506
CERAMIC CAPACITOR CT7-AC400V-B-470p-K △C515A C598
CERAMIC CAPACITOR CT7-AC400V-E-1000p-M △C515
CERAMIC CAPACITOR CT1-500V-B-1000p-K C452
CERAMIC CAPACITOR CT1-500V-B-3900p-K C451

52 1PC
53 1PC
54 1PC
55 1PC
56 1PC
57 1PC
58 2PC
59 1PC
60 1PC
61 1PC
62 1PC
63 1PC
64 1PC
65 3PC
66 1PC
67 1PC
68 1PC
69 1PC
70 2PC
71 3PC
72 1PC
73 1PC
74 1PC
75 1PC
76 1PC
77 1PC
OPTO- COUPLER HS817B △N504
IC CW574CS N703
IC HEF4052BP N801
IC AN7522N N161
IC AT24C08 N702
TRANSISTOR 2SC2482 V911 V921 V931
TRANSISTOR TT2140 V451
TRANSISTOR 2SB1443 TV2 Q V542
TRANSISTOR BF422 V912 V932
TRANSISTOR 2SA1015Y V171
DIODE FR204 VD521
DIODE FR105 VD524
DIODE BAV21 VD912 VD922 VD932
DIODE 1N4148 VD911
NTC5D-15 △R502
POWER FILTER LCLII-5 △L502
degaussing resistance PTDCA1BF7R0Q200 △PS501
HORIZONTAL LINEAR INDUCTOR AC0037 L452
POWER FILTER LCLI-5 △L501
INDUCTOR LGA0305-3u9-K L351
INDUCTOR ZZ0008 L450 L505
POLESTER CAPACITOR CBB81-2KV-9n1-J C455
POLYPROPYLENE CAPACITOR CBB21A-400V-470n-J C467
POLESTER CAPACITOR CL21X-100V-100n-J C707
POLYPROPYLENE CAPACITOR CBB62-AC250V-100n-J △C501 △C502
POLESTER CAPACITOR CL21X-100V-33n-J C510

78 1PC
79 1PC
80 1PC
81 1PC
82 1PC
83 1PC
84 1PC
85 1PC
86 1PC
87 1PC
88 1PC
89 1PC
90 1PC
91 1PC
92 1PC
93 1PC
94 1PC
95 1PC
96 2PC
97 1PC
98 2PC
99 1PC
100 1PC
101 2PC
102 1PC
103 1PC
104 1PC
SLOT TJC3-6A XS895（
U701
SLOT TJC3-4A XS161
SLOT TJC3-3A
SLOT TJC2-5A-2 XS403
SLOT TJC3-5A XS402 XS301
SLOT TJC1-10-2A XS501A XR502
SLOT TJC2-7.5--2A XS502
BRACKET EZ0106A F501A F501B
CONNECTOR TJC3B-5Y-500 XS902 XS903
AV TERMINAL S4 XS861
AV TERMINAL AV9-LY1 XS801
FLYBACK TRANSFORMER JF0501-19959 △T451
POWER TRANSFORMER BCK-70-01UB △T501
HORIZONTAL DRIVE TRANSFORMER TD-0004(BCT-5D) T450
CRT SOCKET GZS10-2-AC3DR △XS901
CERAMIC FILTER XT5.5M Z354
CERAMIC FILTER XT6.5M Z351
FUSE RT1-20-2.5A △F501
SAW FILTER HJ2909 Z301(EMC)
OSC JA12D X761
IC HEF4052 N121
TUNER TELE4-823A A101(EMC)
IC STV9302 N401
IC TDA9370A---3NB N301
IC L7805CV N505
IC L7808CV N503
IC KA5Q0765RT N501