- 3 - PN-2165M
Item Procedure Measuring
instrument
■ADJUSTMENT
Clock
accuracy
adjustment
1. Make the unit test mode as follows:
Turn the ACC switch on and off 4 times while pressing the POWER button and the
EJECT button.(The version number of the microcomputer is displayed, and the
beep signal sounds.)
2. Adjust TC301 so that the reading of CLK TP(pin44 of IC301) is 0±0.1sec.
(When the ACC switch is turned off, test mode is canceled.)
Universal timer
pin 47 : POWER SW_ : IN : Power switch pulse input. Negative logic.
pin 48 : AMP ON : O : "H"= Power amplifier ON.
pin 49 : COMBI ON : O : "H"= Combi ON.
pin 50 : AUX ON_ : IN : "L"= AUX ON.
pin 51 : VOL CE : O : Chip enable signal output to the Volume
IC (LC75386).
pin 52 : VOL CLK : O : Clock pulse output to the Volume IC
(LC75386).
pin 53 : VOL DATA : O : Serial data output to the Volume IC
(LC75386).
pin 54 : VOL MUTE_ : O : Mute signal output to the Volume IC
(LC75386). Negative logic.
pin 55 : SUB SYNC : IN : Sub code block signal input.
pin 56 : NU : O : Not in use.
pin 57 : FM ON_ : O : FM ON flag output. Negative logic.
pin 58 : AM ON_ : O : AM ON flag output. Negative logic.
pin 59 : CD ON_ : O : "L"= CD ON.
pin 60 : AF MUTE_ : O : "L"= Audio mute ON.
pin 61 : NU : IN : Not in use.
pin 62 : NU : IN : Not in use.
pin 63 : NU : IN : Not in use.
pin 64 : NU : IN : Not in use.
pin 65 : CLOCK INH : IN : "L"= Clock display ON.
pin 66 : EJECT INH : IN : "L"= with the dual stage eject.
pin 67 : HOLD_ : IN : ACC ON detect terminal. Negative logic.
pin 68 : SNS : IN : Voltage sensor terminal.
pin 69 : AM IF : IN : AM IF signal input.
pin 70 : FM IF : IN : FM IF signal input.
pin 71 : NU : O : Not in use.
pin 72 : NU : O : Not in use.
pin 73 : VDD : O : Positive supply voltage.
pin 74 : AM OSC : IN : AM VCO signal input.
pin 75 : FM OSC : IN : FM VCO signal input.
pin 76 : GND : - : Ground.
pin 77 : NU : O : Not in use.
pin 78 : EO 1 : O : PLL error out.
pin 79 : TEST 1 : - : Not in use.
pin 80 : X OUT : O : 4.5MHz crystal connection.
Table 1. Loading motor control output
Loading Eject Brake Stop
CW ( pin 6 ) H L H L
CCW ( pin 7 ) L H H L
Table 2. Key matrix
KR 0 KR 1 KR 2 KR 3
(pin27) (pin28) (pin29) (pin30)
KS 0 FM/AM CD
(pin19)
KS 1 M 1 M 2 M 3 AUDIO
(pin20) APS-REW RPT APS-FF
KS 2 M 4 M 5 M 6
(pin21) REW FF
KS 3 Tune-UP Tune-Down Seek-Up Seek-Down
(pin22) Disk-Up Disk-Down Scan-Up Scan-Down
Clock
■LC72366-9531 052-1160-00 CD and Tuner Controller
1. Terminal Description
pin 1 : X IN : IN : 4.5MHz crystal connection.
pin 2 : TEST 2 : IN : Open or connect to ground.
pin 3 : RF MUTE : O : IF control signal output. "H"= SEEK.
pin 4 : ST_/TW_/SD : O : AM : Output "L" ,when received 900kHz.
FM : "L"= Stereo ON.
AM/FM SEEK : Station detect signal in-
put.
pin 5 : CHU SW_ : IN : "L"= Disc chucked.
pin 6 : CW : O : Loading motor control output.
Ref. Table 1.
pin 7 : CCW : O : Loading motor control output.
Ref. Table 1.
pin 8 : TR C : IN : Photo sensor signal input from the CD
mechanism.
pin 9 : TR B : IN : Photo sensor signal input from the CD
mechanism.
pin 10 : TR A : IN : Photo sensor signal input from the CD
mechanism.
pin 11 : CD 3 : I/O : Data communication line with TC9432.
pin 12 : CD 2 : I/O : Data communication line with TC9432.
pin 13 : CD 1 : I/O : Data communication line with TC9432.
pin 14 : CD 0 : I/O : Data communication line with TC9432.
pin 15 : CD CK : O : Clock pulse output to TC9432.
pin 16 : CD CE_ : O : Chip enable signal output to TC9432.
Negative logic.
pin 17 : CD RESET_ : O : Reset pulse output to TC9432.
Negative logic.
pin 18 : NU : O : Not in use.
pin 19 : KS 0 : O : Key scan output. Ref. Table 2.
pin 20 : KS 1 : O : Key scan output. Ref. Table 2.
pin 21 : KS 2 : O : Key scan output. Ref. Table 2.
pin 22 : KS 3 : O : Key scan output. Ref. Table 2.
pin 23 : NU : O : Not in use.
pin 24 : NU : O : Not in use.
pin 25 : NU : O : Not in use.
pin 26 : NU : O : Not in use.
pin 27 : KR 0 : IN : Key scan input. Ref. Table 2.
pin 28 : KR 1 : IN : Key scan input. Ref. Table 2.
pin 29 : KR 2 : IN : Key scan input. Ref. Table 2.
pin 30 : KR 3 : IN : Key scan input. Ref. Table 2.
pin 31 : VDD : - : Positive supply voltage.
pin 32 : EJECT SW_ : IN : CD eject key signal input.
Negative logic.
pin 33 : LCD DATA : O : Serial data output to LCD driver
(LC75822).
pin 34 : LCD CLCK : O : Serial clock output to LCD driver
(LC75822).
pin 35 : LCD CE : O : Chip enable signal output to LCD driver
(LC75822).
pin 36 : LCD INH_ : O : Inhibit signal output to LCD driver
(LC75822).
Negative logic.
pin 37 : SYS ON : O : Power supply control signal output.
pin 38 : NU : O : Not in use.
pin 39 : NU : O : Not in use.
pin 40 : NU : O : Not in use.
pin 41 : RADIO ON : O : "H"= Radio ON.
pin 42 : LCD ON_ : O : "L"= LCD back light ON.
pin 43 : NU : O : Not in use.
pin 44 : BEEP : O : Beep out(3.75kHz).
pin 45 : VOL 1 : IN : Volume control pulse input from the rota-
ry switch.
pin 46 : VOL 2 : IN : Volume control pulse input from the rota-
ry switch.
■EXPLANATION OF IC
