Page 1
SERVICE MANUAL IN CAR DVD-VIDEO PLAYER MD1777 CAUTION BEFORE SERVICING THE CHASSIS, READ THE "SAFETY PRECAUTIONS", IN THIS MANUAL.
Page 2
• Safety Check after Servicing Examine the area surrounding the repaired location for damage or deterioration. Observe that screws, parts and wires have been returned to original positions. Afterwards, perform the following tests and confirm the specified values in order to verify compliance with safety standards. 1.
Page 3
TOTAL CONTENTS SECTION 1. GENERAL ........................2 SECTION 2. CABINET & MAIN FRAME..................6 SECTION 3. ELECTRICAL ......................10...
1-1. SPECIFICATIONS Power DC 12V Negative Ground Consumed electricity 24W (supplementary 2.5W) Weight 5.3kg Dimension (WxHxD) 250mm x 135mm x 266.5mm Operative temperature 5¡C ~ 35¡C Installation condition Horizontal / Relative humidity under 80% Signal type NTSC COLOR VIDEO input 1.0Vp-p unbalanced, RCA JACK AUDIO input -8.8dBm, RCA JACK...
1-2. IDENTIFICATION AND OPERATION OF CONTROLS ! @ # $ % ^ & * “ 9 8 7 6 3 EJECT SOURCE Use to change DVD mode to VCP and vice versa. To eject a disc or tape,press EJECT button. @ MENU 4 AV.SW Used to display the contents menu of the loaded DVD disc.
Page 7
@ # $ ! Infrared (IR) INPUT Connector $ DC 12V Jack This connector provides a two wire interface with various Flexvision video monitor When using a DC power source, connect this jack to 12V DC. products. * Connector description * Connector description % AUDIO/VIDEO OUT Connectors @ Infrared (IR) INPUT Connector (Remote Eye)
3-1. ELECTRICAL ADJUSTMENT 1) SERVO-LOGIC CIRCUIT ADJUSTMENT METHOD • VIDEO HEAD SWITCHING POSITION Adj. Location Checking Point Measuring Equipment Mode Test Tape PT01 3 PIN REC Button(Jig Remocon) Oscilloscope Play DN-2 VIDEO OUT 1) Play back the test tape. 2) Set the oscilloscope in the CHOP mode connect the CH1 to SW pluse PT01 3 PIN the CH2 to VIDEO OUT with CH1 triggering.