SECTION 4SECTION 5
ELECTRICAL ADJUSTMENTSDIAGRAMS
CD section adjustments are done automatically in this set.5-1. IC PIN DESCRIPTIONPin No.Pin NameI/OPin Description
In case of operation check, confirm that focus bias.Y IC801 TMP88CM22F (SYSTEM CONTROLLER)
63SEG1NLCD drive segment output (Open)
Pin No.Pin NameI/OPin Description
64SEG0OLCD drive segment output
4-1. FOCUS BIAS CHECK
1VSSNGround
1. Connect the oscilloscope between TP629 (RF) or TP652 (RF)65 � 68COM3 � 0OLCD drive common output
and GND on main board.2RESERVENNot used (Open)69 � 71V3 � 1OLCD drive bias output
2. Insert the disc (YEDS-18). (Part No. : 3-702-101-01)3FOK IIFocus OK signal input from digital servo processor (IC601).
72, 73C1, 0OCapacitor connected terminal of LCD driver for voltage-up.
3. Press the N > button.
4AGCPWM OOAGC control pulse output
74STOPOStop signal output to VCD control IC. (Connect to ground.)
4. Confirm that the oscilloscope waveform is as shown in the
5, 6RESERVENNot used (Open)
figure below. (eye pattern)75TESTITest terminal for IC. Fixed at L.
A good eye pattern means that the diamond shape ( ) in the7AMUTE OOAnalog audio muting ON/OFF signal control signal output (H: Mute ON)76XHPSW ONNot used (Open)
center of the waveform can be clearly distinguished.8RESERVENNot used (Open)
77XLIGHT ONNot used (Open)
9XRST OOReset signal output to CXD3027R (IC601). (L: Reset)
78RESET IISystem reset signal input from power control IC (IC401). (L: Reset)
Y RF signal reference waveform (eye pattern)
10SCK OOSerial data transfer clock signal output to CXD3027R (IC601).
79XINIOscillation input
VOLT/DIV : 20 mV (10 : 1 probe in use)11MSDT I (SENS)ISerial data input from CXD3027R (IC601).80XOUTOOscillation output (Open)
TIME/DIV : 500 nS12MSDT OOSerial data output to CXD3027R (IC601).
13WAKEUP OOWAKE-UP control signal output (for system standby reset)
14 AD SELIPlug-in detection signal input of LINE OUT/OPTICAL OUT jack.
RF level :15AD CHGMNTIBattery charge voltage detection input from power control IC (IC401).
0.46 - 0.66 Vp-p
16RESERVENFixed at H.
17AD BATMNTIBattery voltage detection input
18AD KEY1IKey input from switch unit (A/D input)
When observing the eye pattern, set the oscilloscope for AC range19RESERVENFixed at H.
and raise vertical sensitivity.
20AD DCINMNTIDC input voltage detection input (A/D input) DC input jack use/no-use detect input
21WP OPENICD door open/close detection input
Test Points:22VREFLIReference voltage (0 V) input for A/D converter.
23VREFHIReference voltage (+2 V) input for A/D converter.
24VDDNPower supply pin (+2 V)
� MAIN BOARD � (SIDE A)� MAIN BOARD � (SIDE B)
25SCOR IISub code sync detection input from CXD3027R (IC601).
26GRSCOR IIGRSCOR signal input
27FG IIFG pulse input
S804
28BEEP OOBeep sound output to headphone AMP (IC302).
29 � 32RESERVENNot used (Open)
33COMPRESSIONIKey input from EPS switch (S804).
3427/37NNot used (Open)
35WFCKIIWFCK input
36XWRENNot used (Open)
37XQOKNNot used (Open)
S805
38DBB IIMEGA BASS switch (S802) input (L: OFF, H: ON)
39HOLD IIHOLD switch (S803) input (L: HOLD on, H: HOLD off)
VOL
40, 41RESERVENNot used (Open)
42XHGONNNot used (Open)
TP65243XLAT OOSerial data latch pulse output to D-RAM controller (IC601). (for ESP)TP629
44XSOE OOOutput enable signal output (for ESP)
45VOLUME IC LATCH OONot used (Fixed at H)
46XPOWLT OOLatch output to VCD control IC (IC401).
47RESERVENNot used (Open)
48XAPC OFF OOAPC mute signal output (L: mute)
49SEG15NNot used. (Open)
50 � 62SEG14 � 2OLCD drive segment output
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ACEC
