Pioneer SC-LX78 Service Manual

2
SC-LX88-K
1
2 3 4
A
B
C
D
E
F
1
2 3 4
1. CONTRAST OF MISCELLANEOUS PARTS
CONTRAST TABLE
SC-LX88-K, SC-LX88-S, SC-LX78-K, SC-LX78-S
SC-89/CUXJ, SC-LX88-K/SYXJ8, SC-LX88-S/SYXJ8, SC-LX78-K/SYXJ8 and SC-LX78-S/SYXJ8 are constructed the same
except for the following:
Parts marked by "NSP" are generally unavailable because they are not in our Master Spare Parts List.
The mark found on some component parts indicates the importance of the safety factor of the part.
Therefore, when replacing, be sure to use parts of identical designation.
Screws adjacent to mark on product are used for disassembly.
For the applying amount of lubricants or glue, follow the instructions in this manual.
(In the case of no amount instructions, apply as you think it appropriate.)
Nos. indicate the pages and Nos. in the service manual for the base model.
NOTES:
When ordering resistors, first convert resistance values into code form as shown in the following examples.
Ex.1 When there are 2 effective digits (any digit apart from 0), such as 560 ohm and 47k ohm (tolerance is shown by J=5%,
and K=10%).
Ex.2 When there are 3 effective digits (such as in high precision metal film resistors).
5
6 1
4 7 3
R 5 0
1
R 0
RD1/4PU J
RD1/4PU J
RN2H K
RS1P K
56 x 10
1
47 x 10
3
R50
1R0
561
473
RN1/4PC F562 x 10
1
5621 5 26 1
Mark No. Symbol and Description
SC-89
/CUXJ
SC-LX88-K
/SYXJ8
SC-LX88-S
/SYXJ8
SC-LX78-K
/SYXJ8
SC-LX78-S
/SYXJ8
Remarks
PCB ASSEMBLIES
NSP 1..
INTERFACE REG_M ASSY AWR7250 AWR7251 AWR7251 AWR7254 AWR7254
P83-3 2..IR REG ASSY AWX1812 AWX1813 AWX1813 AWX1816 AWX1816
P83-4 2..B DIODE ASSY AWX1818 AWX1819 AWX1819 AWX1819 AWX1819
P85-10 2..
PRIMARY SHIELD ASSY Not used Not used Not used AWX1820 AWX1820
P87-5 2..INTERFACE ASSY AWX1810 AWX1811 AWX1811 AWX1811 AWX1811
P87-6 2..A REG BRIDGE ASSY AWX1823 AWX1824 AWX1824 AWX1824 AWX1824
NSP 1..REG BRIDGE ASSY AWR7256 AWR7257 AWR7257 AWR7260 AWR7260
P83-6 2..
DISPLAY BRIDGE ASSY AWX1834 AWX1835 AWX1835 AWX1835 AWX1835
P83-8 2..USB RECT ASSY AWX1843 AWX1844 AWX1844 AWX1844 AWX1844
P85-12 2..CONNECT ASSY AWX1842 AWX1946 AWX1946 AWX1946 AWX1946
P87-8 2..REG ASSY AWX1827 AWX1828 AWX1828 AWX1831 AWX1831
P87-11 2..BIND DM CABLE_M ASSY AWX1845 AWX1846 AWX1846 AWX1846 AWX1846
P87-12 2..HDBT BIND2 ASSY AWX1847 Not used Not used Not used Not used
2..MULTI CH IN ASSY Not used AWX1838 AWX1838 Not used Not used No. 44
2..MCH BRIDGE ASSY Not used AWX1840 AWX1840 Not used Not used
No. 45
NSP 1..PRIM DISPLAY ASSY AWM8372 AWM8373 AWM8373 AWM8373 AWM8373
P85-1 2..PRIMARY ASSY AWX1718 AWX1719 AWX1719 AWX1719 AWX1719
P89-1 2..DISPLAY ASSY AWX1700 AWX1701 AWX1701 AWX1701 AWX1701
P89-4 2..MIC HP ASSY AWX1728 AWX1729 AWX1729 AWX1729 AWX1729
NSP 1..DAC_H ASSY AWM8396 AWM8397 AWM8397 AWM8401 AWM8401
P85-3 2..DAC HIGH ASSY AWX1743 AWX1744 AWX1744 AWX1747 AWX1747
NSP 1..
AUDIO COMPOSITE ASSY AWR7242 AWR7243 AWR7243 AWR7247 AWR7247
P85-5 2..AUDIO ASSY AWX1761 AWX1762 AWX1762 AWX1766 AWX1766
P85-6 2..COMPOSITE ASSY AWX1770 AWX1770 AWX1770 AWX1771 AWX1771
P85-13 1..USB DAC ASSY AWX1737 AWX1738 AWX1738 Not used Not used
P85-14 1..COMPONENT ASSY AWX1793 AWX1794 AWX1794 AWX1797 AWX1797
P85-15 1..DIGITAL MAIN HD ASSY AWX1901 Not used Not used Not used Not used
P85-15 1..DIGITAL MAIN ASSY Not used AWX1900 AWX1900 AWX1905 AWX1905
NSP
2..PCB ANP7910 ANP7909 ANP7909 ANP7909 ANP7909 *1
P85-16 1..HDBT ASSY AWX1961 Not used Not used Not used Not used
NSP 1..D AMP ASSY AWH7096 AWH7097 AWH7097 AWH7101 AWH7101
P87-1 2..D AMP ASSY AWX1929 AWX1930 AWX1930 AWX1934 AWX1934

Pioneer SC-LX78 Specifications

General

Receiver type	Surround
Speaker selector	A+B
Input sensitivity	400 mV
4Ω speaker support	Yes
Audio output channels	9.2 channels
Audio A/D Converter (ADC)	24-bit/192kHz
Signal-to-Noise Ratio (SNR)	103 dB
Total Harmonic Distortion (THD)	1 %
Power output per channel (1KHz@6 Ohm)	210 W
Power output per channel (20-20KHz@8 Ohm)	250 W
HDMI in	8
Ethernet LAN (RJ-45) ports	1
Component video (YPbPr/YCbCr) in	2
Number of HDMI outputs	3
Multichannel audio output type	Terminals
Speakers connectivity type	-
Audio formats supported	AAC, AIFF, FLAC, M4A, MP3, WAV, WMA
Supported radio bands	AM, FM
Preset stations quantity	63
Optical drive included	No
Supported video modes	1080i, 1080p, 480p, 720p
Product color	Black
Audio decoders	Dolby Digital, Dolby Digital Plus, Dolby TrueHD, DTS, DTS Neo:X, DTS-ES, DTS-HD Master Audio
Volume control	Rotary
Apple docking compatibility	Not supported
On Screen Display (OSD) languages	DEU, DUT, ENG, ESP, FRE, ITA, RUS
AC input voltage	220-230 V
AC input frequency	50 - 60 Hz
Power consumption (standby)	0.1 W
Power consumption (typical)	370 W

Weight and Dimensions

Depth	441 mm
Width	435 mm
Height	185 mm
Weight	15300 g