MP-Man PDV-TY995 User manual

Service Manual
(9 Inch) LCD Color Monitor &
DVD Player & DVB-T&ATV
mp-man PDV-TY995

Specification.....................................................…...............................................………………….. 2
Block Diagram.................................…................................................................………………….. 4
General Alignment Instruction.....................................................................…………….....…… 5
Troubleshooting.........................................................................................……………………….... 8
Printed Circuit Board......................................................................................………………….... 12
Explode View......................................................................................................………………….. 13
IC Block Diagram and Lead Identification.....................................................……………….. 26
Schematic Diagram.......................................................................................…………………….. 37

SPECIFICATION
Description Condition Unit Limit Nominal Result
Video Signal Level Vp-p 0.7±0.1 0.7
SYNC Lever Vp-p 0.3±0.1 0.3
Video out level Vp-p 1.0±0.2 1.0
Video out level(No Loader)
75% color bar, 75
0hm
Vp-p 2.0±0.2 2.0
Y(100% color bar) mV 700±140 700
S-VIDEO out level
C(100% color bar) mV 880±176 880
CD 1KHz/0dB V 0.6±0.2 0.7
Audio out level
DVD 1KHz/0dB V 1.4±0.2 1.25-1.4
20Hz dB ≤±3 0
125Hz dB ≤±3 0
10KHz dB ≤±3 0
Frequency Response
(20 Hz – 20 kHz)
20KHz dB ≤±3 0
Signal-to-noise ratio
(add A)
Infinity
zero/-&dB/L&R
dB ≥75 ≥75
Audio distortion & noise 1KHz/0dB/L&R dB ≤-65 -65
Dynamic range 1KHz/-60dB dB ≥85 ≥85
R/L Cross sound 1KHz/0dB/L&R dB ≥45 ≥45
1 kHz Channel Unbalance 1KHz/0dB/L&R dB ≤3 0
Standby W 0 0
Power Consumption
DC 9V Rating
(DVD+Monitor) W ≤12 ≤12
Eccentricity A-BEX TDV-552 um ≥100 100
Scratch A-BEX TDV-541 mm ≥1.6 1.6
Black dot A-BEX TDV-PW525CW mm ≥￠0.8 0.8
Finger Print A-BEX TDV-PW525CW um ≥￠65 65
Vertical Deviation A-BEX TDV-MW533CW mm ≥0.6 0.6
HEADPHONE OUTPUT 1KHz,400mV mW 3±2 3

HEADPHONE Noise No Signal mV ﹤1mV ﹤1mV
L 1KHz/0dB mW 500±100 500 SPK MAX Output
(DVD) R 1KHz/0dB mW 500±100 500
L 1KHz/0dB mW 500±100 500 SPK MAX Output
(AV IN) R 1KHz/0dB mW 500±100 500
HEADPHONE S/N
(add A)
Infinity
zero/-&dB/L&R
dB ≥75 75
SPK S/N
(add A)
Infinity
zero/-&dB/L&R
dB ≥50 50
20Hz dB ≤±3 0
125Hz dB ≤±3 0
10KHz dB ≤±3 0
HEADPHONE RESP
(20Hz~20KHz)
20KHz dB ≤±3 0
20Hz dB ≤±3 0
125Hz dB ≤±3 0
10KHz dB ≤±3 0
Amplifier Frep Resp
(20Hz~20KHz)
20KHz dB ≤±3 0

BLOCK DIAGRAM
MONITOR
MP1029

DVD&DVB-T&ATV PART

GENERAL ALIGNMENT INSTRUCTION
The Main PCB of Monitor Modification:
1. Input voltage is 6.8V-16V, input signal is test circuit BY 5418.
2. Adjust VR2 to get good performance.

TROUBLESHOOTING
LCD
SYMPTOM CAUSE REMEDY
LCD MONITOR PART
1) Picture distortion  Defective capacitor (U10)  Replace capacitor MST720A.
2) No Picture  Defective IC(U1)  Replace IC AO9926
3) No Picture, Picture no
Good
 Defective IC (U12, 3414).  Replace IC 3414.
4) Luminesce no good  Defective U4  Replace IC ASM1117
5) Color is no good  Defective Y2.  Replace Y2.
6) SYNC no good  Defective U10  Replace IC MST720A
7) TINT no good  Defective U10  Replace IC MST720A
8) Picture no good  Defective U10  Replace IC MST720A
9) Brightness no good  Defective U10  Replace IC MST720A
10) Key no action  Defective U11  Replace IC 25LV512

TROUBLESHOOTING
SYMPTOM CAUSE REMEDY
DVD PART
1) No Power  Power source is not correct.
The positive and negative does
not match the unit.
 Power button defective.
 Defective triode U31,U32
 Defective U29
 Replace power source.
 Charge the position of positive
and negative.
 Replace power button.
 Replace U31,U32(cd4060)
 Replace IC 74595
2) No Picture  Defective U30 (24C16N).
 Defective U35.
 Defective IC (U34,CT219).
 Replace U30 (24C16N).
 Replace U35(SDRAM).
 Replace IC CT219.
3) No Sound  Defective U23
 Defective U28
 Defective U29
 Replace IC (C4558).
 Replace IC (TDA2822)
 Replace IC 74595
4) Sound no good  Defective U23 (C4558).
 Defective U28 (TDA2822)
 Replace U23 (C4558).
 Replace U28 (TDA2822)
5) Can not read DISC  Defective U37(CD5954).
 PICK-up Laser is defective.
 Defective U34 (CT219).
 Replace U37 (CD5954)
 Replace pick up.
 Replace U34 (CT219)
6) No remote control function  Defective IR1.
 Key is Defective.
 Defective MONITOR U11
 ReplaceIR1.
 Replace keys.
 Replace IC 25LV512
7）Can not read CARD Defective J19
Defective U43
 Defective U34 (CT219).
Replace J19
Replace IC AU6332
 Replace U34 (CT219)
8）Can not read USB1 Defective USB1
Defective U43
 Defective U34 (CT219).
Replace USB1
Replace IC AU6332
 Replace U34 (CT219)

TROUBLESHOOTING
SYMPTOM CAUSE REMEDY
DVD PART
9)Can not AV IN  Defective U25
 Defective MONITOR U11
 Defective U29
 Replace IC TSSA23157
 Replace IC 25LV512
 Replace IC 74595
10)Can not receive ATV signal  Defective TUNER1.
 Defective U16
 Defective U29
 Defective U20
 Defective MONITOR U11
 Replace TUNER1.
 Replace IC 24C16
 Replace IC74595
 Replace IC TDA9886
 Replace IC 25LV512
11) ATV signal no good & ATV
Picture no good
 Defective TUNER1.
 Defective U21
 Defective U20
 Replace TUNER1.
 Replace IC K3953
 Replace IC TDA9886
12) ATV Sound no good  Defective TUNER1.
 Defective U19
 Defective U20
 Replace TUNER1.
 Replace IC K9653
 Replace IC TDA9886
13)Can not receive DVB-T signal  Defective TUNER1.
 DefectiveU41
 Defective U29
 Defective 34
 Replace TUNER1.
 Replace IC LZ353
 Replace IC 74595
 Replace IC
14) DVB-T Picture no good
&Sound no good
 Defective TUNER1.
 DefectiveU41
 Replace TUNER1.
 Replace IC LZ353

PRINTED CIRCUIT BOARD
Monitor Main PCB
Top View

Monitor Main PCB
Bottom View

DVD Main PCB
TOP View

DVD Main PCB
Bottom View

EXPLODED VIEW

IC BLOCK DIAGRAM & DESCRIPTION
UTC3308

IC BLOCK DIAGRAM & DESCRIPTION

IC BLOCK DIAGRAM & DESCRIPTION
CD4053

IC BLOCK DIAGRAM & DESCRIPTION
ASM1117

IC BLOCK DIAGRAM & DESCRIPTION
CD4053