Clarion PN-2538D, Руководство по обслуживанию

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5. Cautions regarding chips.
Do not reuse removed chips even when no abnormality
is observed in their appearance. Always replace them
with new ones. (The chip parts include resistors, capaci-
tors, diodes, transistors, etc). The negative pole of tanta-
lum capacitors is highly susceptible to heat, so use spe-
cial care when replacing them and check the operation
afterwards.
6. Cautions in handling flexible PWB
Before working with a soldering iron, make sure that the
iron tip temperature is around 270 . Take care not to
apply the iron tip repeatedly(more than three times)to the
same patterns. Also take care not to apply the tip with
force.
7. Turn the unit OFF during disassembly and parts replace-
ment. Recheck all work before you apply power to the
unit.
8. Cautions in checking that the optical pickup lights up.
The laser is focused on the disc reflection surface through
the lens of the optical pickup. When checking that the
laser optical diode lights up, keep your eyes more than
30cms away from the lens. Prolonged viewing of the la-
ser within 30cms may damage your eyesight.
9. Cautions in handling the optical pickup
The laser diode of the optical pickup can be damaged by
electrostatic charge caused by your clothes and body.
Make sure to avoid electrostatic charges on your clothes
or body, or discharge static electricity before handling the
optical pickup.
9-1. Laser diode
The laser diode terminals are shorted for transpor-
tation in order to prevent electrostatic damage.
After replacement, open the shorted circuit. When
removing the pickup from the mechanism, short
the terminals by soldering them to prevent this
damage.
9-2. Actuator
The actuator has a powerful magnetic circuit. If a
magnetic material is put close to it. Its characteris-
tics will change. Ensure that no foreign substances
enter through the ventilation slots in the cover.
9-3. Cleaning the lens
Dust on the optical lens affects performance. To
clean the lens, apply a small amount of isopropyl
alcohol to lens paper and wipe the lens gently.
pin 14: CONNECT VDD : - : Connect to the VDD.
pin 15: BLKCK : IN : The sub code block clock input.
pin 16: ACC DET : IN : ACC detection signal input.
pin 17: BU DET : IN : Backup detection signal input.
pin 18: SW 9V : O : 9V power supply control.
pin 19: BEEP : O : Beep out.
pin 20: REQ O : O : Transmit request signal output.
pin 21: ILL CNT : O : The illumination control.
pin 22: T DATA : O : The display data output for the test mode
indication.
pin 23: PON 2 : O : Power ON signal output.
pin 24: TX : O : Serial data output of N-BUS.
pin 25: RX : IN : Serial data input of N-BUS.
pin 26: NU : - : Not in use.
pin 27: A MUTE : O : The audio mute signal output.
pin 28: M DATA : O : The command data output to the CD IC.
pin 29: STAT : IN : The status data input from the CD IC.
pin 30: M CLK : O : The clock puse output to the CD IC.
pin 31: LIMIT : IN : Sled limit switch signal input.
pin 32: SW 1 : IN : The switch signal input.
pin 33: SW 2 : IN : The switch signal input.
pin 34: EPM : IN : Pull down.
pin 35: P ON 1 : O : Power ON signal output.
pin 36: PT 2 : IN : The photo sensor signal input.
pin 37: PT 5 : IN : The photo sensor signal input.
pin 38: PT 4 : IN : The photo sensor signal input.
pin 39: PT 3 : IN : The photo sensor signal input.
pin 40: PT 6 : IN : The photo sensor signal input.
pin 41: PT 1 : IN : The photo sensor signal input.
pin 42: M 3 CCW : O : The motor drive signal output.
pin 43: M 3 CW : O : The motor drive signal output.
pin 44: M 2 CCW : O : The motor drive signal output.
pin 45: M 2 CW : O : The motor drive signal output.
pin 46: M 1 CCW : O : The motor drive signal output.
pin 47: M 1 CW : O : The motor drive signal output.
pin 48: RST OUT : O : The reset pulse output.
pin 49: D MUTE : O : Digital mute signal output.
pin 50: HSSW1 : O : The test terminal.
pin 51: ILL : IN : Illumination ON signal input.
pin 52: TEST 4 : IN : For the test.
pin 53: TEST 3 : IN : For the test.
pin 54: TEST 2 : IN : For the test.
pin 55: TEST 1 : IN : For the test.
pin 56: EEP DI : IN : The serial data input from EEP-ROM.
pin 57: EEP DO : O : The serial data output to EEP-ROM.
pin 58: EEP CLK : O : The clock pulse output to EEP-ROM.
pin 59: EEP CE : O : The chip enable pulse output to EEP-
ROM.
pin 60: Destination 1 : IN : The destination setting signal input.
pin 61: Destination 2 : IN : The destination setting signal input.
pin 62: T CLR : O : The clear signal output for the test mode
indication.
pin 63: LED CLK : O : The clock pulse output to LED driver.
pin 64: LED STB : O : The strobe pulse output to LED driver.
pin 65: LED CLR : O : The clear pulse output to LED driver.
pin 66: LED DATA : O : The serial data output to LED driver.
pin 67: ILL ON : O : The illumination ON signal output.
pin 68: K IN 0 : IN : The key scan intput terminal.
pin 69: K IN 1 : IN : The key scan intput terminal.
pin 70: K IN 2 : IN : The key scan intput terminal.
pin 71: K IN 3 : IN : The key scan intput terminal.
pin 72: K OUT 0 : O : The key scan output terminal.
pin 73: K OUT 1 : O : The key scan output terminal.
pin 74: SHUT : IN : The shutter signal input.
pin 75: GND : - : Ground.
pin 76: ILL AD : IN : The analog voltage input for illumination
signal.
pin 77: VDD REF : - : VDD reference voltage.
pin 78: VDD : - : Positive supply voltage.
pin 79: SUB Q : IN : Sub Q data input from the CD IC.
pin 80: NU : - : Not in use.
052-5047-32 M30621MCM-1W9GP
6 CD Auto changer Controller
1.Terminal Description
pin 1: SQCK : O : CD DSP SQCK.
pin 2: DIMMER : O : The diminution pulse output to the illumi-
nation.
pin 3: ILL PULSE : IN : Illumination control signal input.
pin 4: TCLK : O : The test clock output.
pin 5: NU : - : Not in use.
pin 6: CONNECT G : - : Connect to the ground.
pin 7: M LD O : O : Load command output to CD-IC.
pin 8: NU : - : Not in use.
pin 9: RESET : IN : Reset signal input.
pin 10: X OUT : O : Crystal connection.
pin 11: GND : - : Ground.
pin 12: X IN : IN : Crystal connection.
pin 13: VDD : - : Positive supply voltage.
EXPLANATION OF IC