Sony STR-NX5MD User manual

1
SERVICE MANUAL
TUNER/AMPLIFIER
AEP Model
UK Model
E Model
SPECIFICATIONS
STR-NX5MD
STR-NX5MD is the
Tuner and Amplifier
Section in DHC-NX5MD.
Amplifier section
European model
DIN power output (rated) 80 + 80 watts
(6 ohms at 1 kHz, DIN)
Continuous RMS power output (reference)
100 + 100 watts
(6 ohms at 1 kHz, 10% THD)
Music power output (reference)
160 + 160 watts
(6 ohms at 1 kHz, 10% THD)
Other models
DIN power output (rated) 90 + 90 watts
(6 ohms at 1 kHz, DIN)
Continuous RMS power output (reference)
110 + 110 watts
(6 ohms at 1 kHz, 10% THD)
Inputs
VIDEO IN: voltage 250 mV
(phono jacks) impedance 47 kilohms
TAPE IN: voltage 250 mV
(phono jacks) impedance 47 kilohms
Outputs
TAPE OUT: voltage 250 mV
(phono jacks) impedance 1 kilohms
PHONES: accepts headphones of 8 ohms or
(stereo mini jack) more
FRONT SPEAKER: accepts impedance of 6 to 16 ohms
REAR SPEAKER: accepts impedance of 16 ohms
SUPER WOOFER: volta
g
e 1 V
,
im
p
edance 1 kilohms
Tuner section
FM stereo, FM/AM superheterodyne tuner
FM tuner section
Tuning range
Tourist model: 76.0 – 108.0 MHz
Other models: 87.5 – 108.0 MHz
Aerial FM lead aerial
Aerial terminals 75 ohm unbalanced
Intermediate frequency 10.7 MHz
AM tuner section
Tuning range
European models: 531 – 1,602 kHz
(with the interval set at 9 kHz)
Other models: 531 – 1,602 kHz
(with the interval set at 9 kHz)
530 – 1,710 kHz
(with the interval set at 10 kHz)
Aerial AM loop aerial
Aerial terminals External aerial terminal
Intermediate frequency 450 kHz
General
Power requirements
European models: 230 V AC, 50/60 Hz
Other models: 120 V, 220 V or 230 – 240 V AC,
50/60 Hz Adjustable with voltage
selector
Power consumption
European models: 190 watts
Other models: 220 watts
Dimensions (w/h/d) Approx. 225 ×202 ×356 mm
Mass
European models: Approx. 7.8 kg
Other models: Approx. 7.6 kg
Supplied accessories: AM loop aerial (1)
Remote Commander (1)
Batteries (2)
FM lead aerial (1)
Speaker cords (2)
Front speaker pads (8)
Design and specifications are subject to change
without notice.

2
TABLE OF CONTENTS
1. GENERAL .......................................................................... 3
2. DISASSEMBLY
2-1. Case ....................................................................................... 5
2-2. Front Panel Assy ................................................................... 5
2-3. Back Panel Assy .................................................................... 6
2-4. Main Board ........................................................................... 6
3. TEST MODE ........................................................................ 7
4. DIAGRAMS
4-1. Notes for Printed Wiring Boards and Schematic Diagrams .. 9
4-2. Schematic Diagram –Main Board (1/3) –.......................... 10
4-3. Schematic Diagram –Main Board (2/3) –.......................... 11
4-4. Schematic Diagram –Main Board (3/3) –.......................... 12
4-5. Printed Wiring Board –Main Board –................................ 13
4-6. Printed Wiring Board –PA Board –.................................... 14
4-7. Schematic Diagram –PA Board –...................................... 15
4-8. Printed Wiring Board –Panel Section –............................. 16
4-9. Schematic Diagram –Panel Section –................................ 17
4-10. Printed Wiring Board –Transformer Section –................. 18
4-11. Schematic Diagram –Transformer Section –................... 19
4-12. IC Pin Function Description ............................................. 20
5. EXPLODED VIEW
5-1. General Section ................................................................... 22
5-2. Front Panel Section ............................................................. 23
5-3. Chassis Section ................................................................... 24
6. ELECTRICAL PARTS LIST ........................................ 25
SAFETY-RELATED COMPONENT WARNING!!
COMPONENTS IDENTIFIED BY MARK 0OR DOTTED
LINE WITH MARK 0ON THE SCHEMATIC DIAGRAMS
AND IN THE PARTS LIST ARE CRITICAL TO SAFE
OPERATION. REPLACE THESE COMPONENTS WITH
SONY PARTS WHOSE PART NUMBERS APPEAR AS
SHOWN IN THIS MANUAL OR IN SUPPLEMENTS PUB-
LISHED BY SONY.
MODEL PART No.
AEP, UK, G, AED and CIS models 4-221-391-8[]
Malaysia and Singapore models 4-221-391-9[]
• MODEL IDENTIFICATION
– Rear Panel –
PART No.
• Abbreviation
G : German model
AED : North European model

3
SECTION 1
GENERAL
• LOCATION OF CONTROLS
– Front Panel –
– Rear Panel –
1?/1(Power) button and indicator
2CD/TUNER NAME button
3DISPLAY button
4TIMER indicator
(AEP, UK, German, AED and CIS models)
5VIDEO button
6TAPE button
7MD button
8CD button
9TUNER button
q; Display window
qa TUNER BAND button
qs STEREO/MONO button
qd TUNER MEMORY button
qf DBFB button
qg SURROUND button
qh GROOVE button and indicator
qj VOLUME knob
qk PLAY MODE button
ql REPEAT/PTY button
w; + Mbutton
wa ENTER button and indicator
ws Remote sensor
wd PHONES jack
wf Jog dial
wg – mbutton
wh POWER SAVE/DEMO (STANDBY) button
wj FILE SELECT button
1SYSTEM CONTROL terminals
2AM ANTENNA terminals
3FM ANTENNA terminal
4VOLTAGE SELECTOR switch
(Malaysia and Singapore models)
5REAR SPEAKER terminals
6CENTER SPEAKER terminals
7SUPER WOOFER OUT jack
8MD OUT jacks
9MD IN jacks
q; VIDEO (AUDIO) jacks
9
8
0
1 2 3
4
6 57
1
2
wh
wf
wg
4qs
5 6 7 8 9 0
3
qa
qd
qh
qj
qkqlwswd w;wa
qf
qg
Photo: AEP model
• Abbreviation
AED : North European model

4
This section is extracted from
instruction manual.
7
Getting Started
Step 2: Setting the time
You must set the time beforehand to use the timer
functions.
The clock is on a 24-hour system for the European
model, and a 12-hour system for other models.
The 24-hour system is used for illustration
purposes.
1
3,5 2,4
1Press CLOCK/TIMER SET.
The hour indication flashes.
2Press Vor vto set the hour.
3Press ENTER.
The minute indication flashes.
4Press Vor vto set the minute.
5Press ENTER.
The clock starts.
Tips
•If you’ve made a mistake, start over from step 1.
•Setting the time deactivates the demo mode.
If you want to display the demo mode, press
DISPLAY (European model) or DEMO
(STANDBY) (other models) when the power is off.
To change the time
The previous explanation shows you how to set
the time while the power is off. To change the
time while the power is on, do the following:
1Press CLOCK/TIMER SET.
2Press Vor vto select the SET CLOCK.
3Press ENTER.
4Perform steps 2 through 5 above.
Note
The clock settings are cancelled when you disconnect
the mains lead or if a power failure occurs.

5
2-1. CASE
2-2. FRONT PANEL ASSY
Note: Follow the disassembly procedure in the numerical order given.
SECTION 2
DISASSEMBLY
3case
1two screws
(case 3 TP2)
2two screws
(BVTP3 ×10)
1two screws
(case 3 TP2)
3two screws
(BVTT3 ×6)
4front panel assy
1flat cable (7 core)
(CN132)
2flat cable (25 core)
(CN131)

6
2-3. BACK PANEL ASSY
2-4. MAIN BOARD
3four screws
(BVTP3 ×10)
3six screws
(BVTP3 ×10)
4back panel assy
2connector
(CN173)
1flat cable (13 core)
(CN1)
3two screws
(BVTP3 ×10)
2connector (CN111)
1connector
(CN181)
4connector (CN152
)
5main board

7
SECTION 3
TEST MODE
[CD Delivery Mode]
• This mode moves the optical pick-up to the position durable to
vibration. Use this mode when returning the set to the customer
after repair.
Procedure:
1. Press the ?/1button to turn the power ON.
2. Press the [ENTER] and ?/1buttons simultaneously.
3. A message “LOCK” is displayed on the liquid crystal display,
and the CD delivery mode is set.
[Change-over the MW Tuning Interval]
• The MW tuning interval can be changed over 9 kHz or 10 kHz.
Procedure:
1. Press the ?/1button to turn the power ON.
2. Press the [TUNER] button to select the function “TUNER”,
and press the [TUNER BAND] button to select the BAND “MW”.
3. Press the ?/1button to turn the power OFF.
4. Press the [TUNER MEMORY] and ?/1buttons simultaneously,
and the display on the liquid crystal display changes to “MW
9 k STEP” or “MW 10 k STEP”, and thus the tuning interval
is changed over.
[MC Cold Reset]
• The cold reset clears all data including preset data stored in the
RAM to initial conditions. Execute this mode when returning
the set to the customer.
Procedure:
1. Turn the power ON or set to the DEMO mode.
2. Press the [GROOVE] and ?/1buttons simultaneously.
3. The set is reset, and displays “COLD RESET”, then becomes
DEMO mode.
[Amplifier Test Mode]
Procedure:
1. Press the ?/1button to turn the power ON.
2. Press three buttons of [ENTER] , [DISPLAY] , and
[TUNER BAND] simultaneously.
3. “ALC OFF” is displayed, then the function which was set be-
fore the test mode became active is displayed.
[LED and Liquid Crystal Display All Lit, Software Ver-
sion Display, Key Check, VACS Level Display Mode]
Procedure:
1. Press the ?/1button to turn the power ON.
2. Press three buttons of [ENTER] , [DISPLAY] , and
[STEREO/MONO] simultaneously.
3. LEDs and liquid crystal display are all turned on.
Rotating the JOG dial changes over the check patterns of liq-
uid crystal display.
4. Successively, the following three modes can be activated.
(1) Press the [VIDEO] button, and the software version is displayed
on the liquid crystal display.
(2) Press the [MD] button, and the key check mode is activated.
In the key check mode, the liquid crystal display displays “K
0 J0 V0”. Each time a button is pressed, “K” value increases.
However, once a button is pressed, it is no longer taken into
account.
“J” value increases like 1, 2, 3 ... if turn the JOG dial clock-
wise, or it decreases like 0, 9, 8 ... if turn the JOG dial counter-
clockwise.
“V” value increases like 1, 2, 3 ... if turn the [VOLUME] dial
clockwise, or it decreases like 0, 9, 8 ... if turn the JOG dial
counterclockwise.
(3) Press the [TAPE] button, and the VACS level is displayed on
the liquid crystal display.
5. To release from these mode, press three buttons in the same
manner as step 2, or remove the power cord.
[MC Hot Reset]
• This mode resets the set with the preset data kept stored in the
memory. The hot reset mode functions same as if the power
cord is plugged in and out.
Procedure:
1. Turn the power ON or set to the DEMO mode.
2. Press three buttons of [ENTER] , [DISPLAY] , and
[TUNER MEMORY] simultaneously.
3. The set is reset, and becomes standby state.
[Change-over of VACS ON/OFF]
Procedure:
1. Press the ?/1button to turn the power ON.
2. Press three buttons of [ENTER] , [DISPLAY] , and [GROOVE]
simultaneously, and the display on the liquid crystal display
changes to “VACS ON” or “VACS OFF”, and thus the VACS
ON/OFF is changed over.
[VIDEO input, Record and CD play in CD function]
Procedure:
1. Press the ?/1button to turn the power ON.
2. Press three buttons of [ENTER] , [DISPLAY] , and
-msimultaneously.
3. “DVD 5.1CH” is displayed on liquid crystal display, and at
the same time, CD is played and the deck B is placed in the
record status.
[CD Service Mode]
• This mode can run the CD sled motor optionally. Use this mode,
for instance, when cleaning the optical pick-up.
Procedure:
1. Press the ?/1button to turn the power ON.
2. Press the [CD] button to select the function “CD”.
3. Press three buttons of [ENTER] , [POWER SAVE/DEMO
(STANDBY), and [STEREO/MONO] simultaneously.
4. Set to the Sled Servo mode.
5. With the CD in stop status, turn the JOG dial clockwise to
move the optical pick-up to outside track, or turn it counter-
clockwise to inside track.
6. To release from this mode, perform as follows.
1) Move the optical pick-up to the most inside track.
2) Remove the power cord.
Notes: • Always move the optical pick-up to most inside track when
releasing from this mode. Otherwise, a disc will not be un-
loaded.
• Do not run the sled motor excessively, otherwise the gear can
be chipped.

8
[Aging Mode]
This mode can be used for operation check of CD section and tape
deck section.
CD section and tape deck section work in parallel.
•If an error occurred:
The aging operation stops only an error occurred sections and
display then status.
•If no error occurs:
The aging operation continues repeatedly.
Procedure:
1. Set disc in DISC5 tray.
2. Load the tapes into the decks A and B respectively.
3. Press the [PLAY MODE] button to set the “ALL DISCS”mode,
and press the [REPEAT/PTY] button to “REPEAT”off.
4. Press the [CD] button to select the function “CD”.
5. Press three buttons of [ENTER] , [POWER SAVE/DEMO
(STANDBY), and [TUNER BAND] simultaneously.
6. The aging mode is activated, if the indicator of disc tray num-
ber on the liquid crystal display is blinking.
7. To release from the aging mode, press the ?/1button to turn
the power OFF and operate the cold reset. (Refer to the “MC
Cold Reset”)
1. Display at the Aging Mode
•Display operating state of CD section and tape deck section al-
ternately.
•If an error occurred, stop display which that section.
2. CD Section
•Display at the aging mode is the same as the normal operation.
•The sequence during the aging mode is following as below.
Aging mode sequence (CD section) :
Open the disc1 tray
Disc5 chucking
Disc5 TOC read
Disc5 play track1 for 2 seconds
Disc5 play last track for 2 seconds
•Display at an error occurred
1) Display of the error count
(1) Press three buttons of [ENTER] , [POWER SAVE/DEMO
(STANDBY), and [GROOVE] simultaneously.
(2) Display of the error count following as below.
Display
EMC**EDC**
Notes:
EMC**: The number of mechanical error.
EDC** : The number of no disc error after chucking the disc.
2) Display of mechanical error
Display
E**M##$$&&
Notes:
**: The number of mechanical error.(“00”is latest one)
(Press the [PLAY MODE] button to changes next error display)
## : Not used.
$$ : Loading error. (Second figure is not used)
D : The error in the midst of close at the except mechanical trouble.
E : The error in the midst of open at the except mechanical trouble.
C : The error in the midst of chuck up at the except mechanical
trouble.
F : The error in the midst of EX-open at the except mechanical
trouble.
&&: Loading error. (Second figure in not used)
1:The error in the midst of chuck up.
2:The error in the midst of chuck down.
3:Time up of EX-open
4:Time up of EX-close.
3) Display of no disc error
Display
E**D##$$&&
Notes:
**: The number of mechanical error.(“00”is latest one)
(Press the [REPEAT] button to changes next error display)
##:
01:Focus error
02:GFS error
03:Set up error
$$:
00:No disc error when does not chucking retry.
02:No disc error when chucking retry to completion.
&&: The state when judged no disc error. (Second figure is not used)
1:Stop
2:Set up
3:TOC read
4:Access
5:Play
6:Pause
7:Manual search (Play)
8:Manual search (Pause)

99
SECTION 4
DIAGRAMS
4-1. NOTE FOR PRINTED WIRING BOARDS AND SCHEMATIC DIAGRAMS
Note on Printed Wiring Board:
•X: parts extracted from the component side.
•Y: parts extracted from the conductor side.
•x: parts mounted on the conductor side.
•b: Pattern from the side which enables seeing.
(The other layers' patterns are not indicated)
• Indication of transistor.
Note on Schematic Diagram:
• All capacitors are in µF unless otherwise noted. pF: µµF
50 WV or less are not indicated except for electrolytics
and tantalums.
• All resistors are in Ωand 1/4W or less unless otherwise
specified.
•f: internal component.
•2: nonflammable resistor.
•5: fusible resistor.
•C: panel designation.
•U: B+ Line.
•V: B– Line.
• Voltages and waveforms are dc with respect to ground
under no-signal (detuned) conditions.
no mark : TUNER (FM)
• Voltages are takenwitha VOM (Inputimpedance10 MΩ).
Voltage variations may be noted due to normal produc-
tion tolerances.
• Waveforms are taken with a oscilloscope.
Voltage variations may be noted due to normal produc-
tion tolerances.
• Circled numbers refer to waveforms.
• Signal path.
F: FM
E: MD PLAY
J: CD PLAY
j: MD REC
• Abbreviation
MY : Malaysia model
SP : Singapore model
G : German model
AED : North European model
B
These are omitted.
CE
Q
B
These are omitted.
CE
Q
• IC Block Diagram
– MAIN Board –
IC401 BA3830F
• Waveforms
– MAIN Board –
1IC501 qa (XCOUT)
2IC501 qd (XOUT)
F01
R02
R01
LINE NF
LINE IN
REFERENCE
CURRENT
REFERENCE
CURRENT
RESET
BAND
PASS
FILTER
DET
17
RESET
18
F02
16
F03
15
F04
14
F05
13
F06
12
REC LEVEL
11
VCC
10
4
3
2
1
+
–
REC NF
REC IN 6
RESET C 7
BIAS C 8
GND 9
5
+
–
3 Vp-p
32.768 kHz
2.8 Vp-p
16.025 MHz
• Circuit Boards Location
SUB TRANS board
(AEP, UK, G, AED, CIS)
TRANS board
BACK LIGHT board
PANEL board
R board PA board
MAIN board
TUNER pack
Note: The components identified by mark 0or dotted line
with mark 0are critical for safety.
Replace only with part number specified.

10 10
STR-NX5MD
4-2. SCHEMATIC DIAGRAM – MAIN Board (1/3) – • See page 13 for Printed Wiring Board.
12
11

11 11
STR-NX5MD
4-3. SCHEMATIC DIAGRAM – MAIN Board (2/3) – • See page 9 for Waveforms. • See page 13 for PrintedWiring Board.
12
10
PIN FUNCTION

12 12
STR-NX5MD
4-4. SCHEMATIC DIAGRAM – MAIN Board (3/3) – • See page 9 for IC Block Diagram.
D141 A-8
D501 B-2
D502 D-1
D503 D-1
D504 E-1
D505 E-1
D506 E-1
D507 F-1
D508 E-2
D510 C-1
D901 B-5
D902 B-5
D903 B-5
D904 B-4
D905 A-6
D906 A-6
D914 A-3
D915 B-3
D920 B-4
D921 B-3
D925 B-4
D931 A-4
D932 A-4
IC101 B-9
IC401 E-5
IC501 E-3
IC502 E-1
IC901 A-2
IC921 C-2
Q112 A-8
Q113 A-8
Q114 G-6
Q162 A-9
Q163 A-9
Q164 G-6
Q191 G-11
Q411 D-5
Q421 C-3
Q431 E-6
Q432 D-6
Q461 D-5
Q501 F-1
Q502 F-1
Q503 F-1
Q901 A-6
Q902 A-6
Q903 A-6
Q904 A-3
Q905 A-3
Q906 B-3
Q907 B-4
Q921 B-3
Q926 B-3
Q927 B-3
Q951 B-6
Q952 B-6
Q953 B-6
Ref.No. LocationRef.No. Location
• Semiconductor Location
10
11

13 13
STR-NX5MD
4-5. PRINTEDWIRING BOARD – MAIN Board – • See page 9 for Circuit Boards Location.
(Page 18)
(Page 16)
(Page 16)
(Page 14)
(Page 18)
(Page 18)
There are a few cases that the part isn’t mounted in
model is printed on diagram.

14 14
STR-NX5MD
4-6. PRINTEDWIRING BOARD – PA Board – • See page 9 for Circuit Boards Location.
TRANS
BOARD
CN952
MAIN
BOARD
CN152
(AEP, UK, AED, CIS)
(AEP, UK,
AED, CIS)
(MY, SP)
(MY, SP)
IC801 C-8
Q801 B-5
Q821 D-7
Q822 D-7
Q823 C-7
Q824 C-7
Q825 H-4
Q826 H-4
Ref.No. LocationRef.No. Location
D802 B-5
D821 E-4
D831 C-6
D852 C-5
D871 B-10
D881 E-2
D883 A-11
D884 C-11
D885 F-10
• Semiconductor Location
Ref.No. Location
Q827 H-4
Q828 G-4
Q829 G-4
Q830 G-4
Q831 C-7
Q851 C-5
Q881 B-10
Q882 B-9
(Page 18)
(Page 13)
There are a few cases that the part isn’t mounted in
model is printed on diagram.

15 15
STR-NX5MD
4-7. SCHEMATIC DIAGRAM – PA Board –

16 16
STR-NX5MD 4-8. PRINTEDWIRING BOARDS – PANEL Section – • See page 9 for Circuit Boards Location.
D631 E-2
D636 G-5
D637 A-8
D638 D-8
D643 C-6
D644 C-7
D645 C-4
D646 C-5
D647 C-2
D648 C-3
Q631 E-1
Q636 F-5
Q637 B-7
Q638 D-8
Q641 D-7
Q642 D-7
Q643 D-7
• Semiconductor
Location
Ref.No. Location
(Page 13)
(Page 13) There are a few cases that the part isn’t mounted in
model is printed on diagram.

17 17
STR-NX5MD
4-9. SCHEMATIC DIAGRAM – PANEL Section –

18 18
STR-NX5MD
(MY, SP)
(MY, SP)
JW953
1
(MY, SP)
(AEP, UK, G,
AED, CIS)
(AEP, UK, G,
AED, CIS)
09
10
MAIN
BOARD
CN181
MAIN
BOARD
CN111
PA
BOARD
CN808
CN952
4-10. PRINTEDWIRING BOARDS – TRANSFORMER Section – • See page 9 for Circuit Boards Location.
(Page 13)
(Page 13)
(Page 14)
(Page 13)
There are a few cases that the part isn’t mounted in
model is printed on diagram.

19 19
STR-NX5MD
4-11. SCHEMATIC DIAGRAM –TRANSFORMER Section –

20 20
1 L+R I Spectrum analyzer drive signal input from the spectrum analyzer band-pass filter (IC401)
(for VACS, non-stop signal)
2 BPF SL I Spectrum analyzer drive (super low frequency) signal input from the spectrum analyzer
band-pass filter (IC401) (for 40 Hz)
3 F RELAY O Speaker protect relay drive signal output for the front side speaker “H”: relay on
4 R RELAY O Speaker protect relay drive signal output for the rear side speaker “H”: relay on
5 SIRCS I Remote control signal input from the remote control receiver (IC601)
6 LINE MUTE O Line muting on/off control signal output terminal “L”: muting on
7 DBFB O DBFB normal/high selection signal output to the M62493FP (IC101)
“L”: DBFB high, “H”: DBFB low/off
8 BYTE I External data bus line byte selection signal input terminal Fixed at “L” in this set
9 CNVSS — Ground terminal
10 XCIN I Sub system clock input terminal (32.768 kHz)
11 XCOUT O Sub system clock output terminal (32.768 kHz)
12 RESET I System reset signal input from the reset signal generator (IC502) “L”: reset
For several hundreds msec. after the power supply rises, “L” is input, then it changes to “H”
13 XOUT O Main system clock output terminal (16 MHz)
14 VSS — Ground terminal
15 XIN I Main system clock input terminal (16 MHz)
16 VCC — Power supply terminal (+5V)
17 NMI I Non-maskable interrupt input terminal Fixed at “H” in this set
18 WAKE UP O Wakeup control signal output to the CPU on the HMC-NX5MD “H” active
19 PHONES MUTE O Muting on/off control signal output terminal “L”: muting on Not used (open)
20 RDS INT I RDS serial data transfer clock signal input from the tuner pack
(Used for the AEP, UK, G*, AED*and CIS models only)
21 RDS DATA I RDS serial data input from the tuner pack
(Used for the AEP, UK, G*, AED*and CIS models only)
22 AC CUT I AC off detection signal input from the reset signal generator (IC502) “L”:AC cut checked
23 PL CLK O Not used (open)
24 PL DATA O Not used (open)
25 PL LAT O Not used (open)
26 STK POWER O Power amplifier on/off selection signal output terminal “L”: standby mode, “H”: on
27 SPEAKER PROTECT I Protect on/off detection signal input from the speaker protect circuit
“L”: protect on, “H”: protect off
28 SOFT-TEST O Output terminal for the software test Not used (open)
29 IIC CLK I/O Communication data reading clock signal input or transfer clock signal output with the CPU
on the HMC-NX5MD
30 IIC DATA I/O Communication data bus with the CPU on the HMC-NX5MD
31 TXD1 O Not used (open)
32 RXD1 I Not used (fixed at “L”)
33 CLK1 I Not used (fixed at “L”)
34 RTS1 O Not used (open)
35 LCD DATA O Serial data output to the liquid crystal display unit (LCD601)
36 RXD0 I Not used (fixed at “L”)
37 LCD CLK O Serial data transfer clock signal output to the liquid crystal display unit (LCD601)
38 493 LT O Serial data latch pulse output to the M62493FP (IC101)
39 CLOCK OUT O Output terminal for the clock signal check Not used (open)
40 VC L+R/L–R O Virtual cinema L+R/L–R selection signal output terminal Not used (open)
4-12. IC PIN FUNCTION DESCRIPTION
Pin No. Pin Name I/O Descriptions
• MAIN BOARD IC501 M30622MAA-A39FP (SYSTEM CONTROLLER )
41 XHOLD I Not used (fixed at “L”)
42 LCD SW O Liquid crystal display on/off selection signal output terminal “L”: on, “H”: off
Not used (open)
43 STBY RELAY O Main power on/off control signal output terminal “L”: standby mode, “H”: power on
(Used for the AEP, UK, G*, AED*and CIS models only)
44 BASS FREQ O Sync bass frequency normal/high selection signal output to the M62493FP (IC101)
“L”: sync bass off (normal), “H”: sync bass high Not used (open)
45 OPT SEL O Not used (open)
46 XWR I Not used (fixed at “H”)
47 493 DATA O Serial data output to the M62493FP (IC101)
48 493 CLK O Serial data transfer clock signal output to the M62493FP (IC101)
49 ST MUTE O Tuner muting control signal output to the tuner pack “H”: muting on
50 STEREO I FM stereo detection signal input from the tuner pack “L”: stereo
51 TUNED I Tuning detection signal input from the tuner pack “L”: tuned
52 ST CE O PLL chip enable signal output to the tuner pack
53 ST DOUT O PLL serial data output to the tuner pack
54 ST DIN I PLL serial data input from the tuner pack
55 ST CLK O PLL serial data transfer clock signal output to the tuner pack
56 VC BYPASS O Virtual cinema bypass control signal output terminal Not used (open)
57 PHONES DETECT I Connection detect signal input of the headphone jack (J701)
“L”: no connected, “H”: headphone connected
58 LCD LAT O Serial data latch pulse output to the liquid crystal display unit (LCD601)
59 LCD A0 O Address signal output to the liquid crystal display unit (LCD601)
60 LCD RESET O Reset signal output to the liquid crystal display unit (LCD601) “L”: reset
61 NC O Not used (open)
62 VCC — Power supply terminal (+5V)
63 NC O Not used (open)
64 VSS — Ground terminal
65 to 67 NC O Not used (open)
68 TUNER MUTE O TUNER 5V ON/OFF SW
69 JOG B I Jog dial pulse input from the rotary encoder (S652 JOG) (B phase input)
70 JOG A I Jog dial pulse input from the rotary encoder (S652 JOG) (A phase input)
71 VOL B I Jog dial pulse input from the rotary encoder (S651 VOLUME) (B phase input)
72 VOLA I Jog dial pulse input from the rotary encoder (S651 VOLUME) (Aphase input)
73 to 75 NC O Not used (open)
76 HMC POWER O HMC POWER detection
77, 78 NC O Not used (open)
79 LED FUNCTION O LED drive signal output of the key illumination indicator (D643 to D648) “H”: LED on
80 LED POWER O LED drive signal output of the I/1 indicator (D638) “H”: LED on
81 LED TIMER O LED drive signal output of the TIMER indicator (D637) “H”: LED on
(Used for the AEP, UK, G*, AED*and CIS models only)
82 LED LCD O LED drive signal output of the liquid crystal display back light indicator (D639 to D642)
“H”: LED on
83 LED ENTER O LED drive signal output of the ENTER indicator (D636) “H”: LED on
84 LED JOG O LED drive signal output terminal Not used (open)
85 LED CINEMA O LED drive signal output terminal Not used (open)
86 LED DOLBY O LED drive signal output of the PRO LOGIC indicator (D633) “H”: LED on
Not used (open)
Pin No. Pin Name I/O Descriptions