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ORDER NO.
PIONEER CORPORATION 4-1, Meguro 1-chome, Meguro-ku, Tokyo 153-8654, Japan
PIONEER ELECTRONICS (USA) INC. P.O. Box 1760, Long Beach, CA 90801-1760, U.S.A.
PIONEER EUROPE NV Haven 1087, Keetberglaan 1, 9120 Melsele, Belgium
PIONEER ELECTRONICS ASIACENTRE PTE. LTD. 253 Alexandra Road, #04-01, Singapore 159936
PIONEER CORPORATION 2008
S-IC691A
RRV3860
T-ZZR SEP. 2008 Printerd in Japan
IN-CEILING SPEAKER
S-IC691A
/XTW/UC
S-IC891A /XTW/UC
This service manual is intended for qualified service technicians; it is not meant for the casual
do-it-yourselfer. Qualified technicians have the necessary test equipment and tools, and have been
trained to properly and safely repair complex products such as those covered by this manual.
Improperly performed repairs can adversely affect the safety and reliability of the product and may
void the warranty. If you are not qualified to perform the repair of this product properly and safely,
you should not risk trying to do so and refer the repair to a qualified service technician.
WARNING
This product contains certain electrical parts contain chemicals which are known to the State of California to cause cancer,
birth defects or other reproductive harm.
Health & Safety Code Section 25249.6 - Proposition 65


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1. REASSEMBLY AND DISASSEMBLY PRECAUTIONS
· The grille is inserted into the baffle. To detach it, insert grille
removal tool into each of the 4 corner holes of the grille net and
push up carefully.
· The Speaker frame is attached to the seiling by 6 external screws
with Rotating clamps.
To detach it, unfasten those screws.
· The LPF network is attached to the speaker frame by 2 external
screws. To detach it, first disconnect the cord to speaker.
Next remove the speaker flame. Then unfasten those screws.
· The HPF network is attached to the CST chamber inside of
speaker frame by 2 screws.
To detach it, first detach CST and disconnect the cord to speaker
& LPF network.
· The CSTspeaker is attached to the sub frame by 4 external
screws.The CSTsub frame is attached to the speaker frame by 4
external screws.
To detach it, unfasten those screws. When reattaching it, fit the
boss of the sub frame into the hole on the speaker flame.
· The WF sub frame is attached to the baffle frame by 6 external
screws. To detach it, unfasten those screws. (only S-IC691A)
· The woofers are attached to the sub frame by 6 external screws.
To detach them, unfasten those screws. When re-attaching them,
face its terminal downward.
· Attach the speaker frame to the wall /ceiling, and
tighten the screws lightly (temporary attachment).
At this point the rotating clamp will rotate so that the rotating
clamp and frame are clamped on to the wall/ceiling.
Gently try pulling the speaker forward and check that all of the
rotating clamps have rotated outwards and are lightly clamping
to the wall/ceiling.
· Adjust the mounting orientation to point the CST
toward the listening position.
· Tighten the screws firmly using no more than the
maximum torque specified.
Allowable maximum torque: 1.0 N.m
Screw
Speaker frame
Rotating clamp


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2. EXPLODED VIEWS AND PARTS LIST
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.
NOTES:
2.1 PACKING
1
Bottom Protector
SHA2623
2
Top Protector
SHA2627
3
Carton Spacer
SHB1190
4
Protection Sheet
SHB1201
5
Paint Mask
SHC1874
6
Packing Case
(for S-IC691A)
SHG2826
(for S-IC891A)
SHG2837
7
Polyethylene Bag S4 (for Grille)
SHL1452
8
Polyethylene Bag Sx
SHL1481
NSP 9
Label Serial
SRW1112
NSP 10
1..Accessories Set
SME3893
11
2..Polyethylene Bag S2
SHL1295
12
2..Operating Instruction
SRD1387
(English, French)
NSP 13
2..Warranty Card
SRY1048
NSP 14
1..Accessories Set
SME3898
(for Adhesive Tape)
15
2..Adhesive Tape
SEH1134
16
2..Polyethylene Bag
SHL1246
NSP 17
1..Accessories Set
SME3858
(for Removal Tool)
18
2..Polyethylene Bag
SHL1246
19
2..Grille Removal Tool
SLH1096
20
Install Template
SRK1038
21
Washer
WC40FTB
PACKING Parts List
Mark No.
Description
Part No.
There is no drawing


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2.2 CS ASSY
1
1..Grille Assy
SMG1914
NSP 2
2..Scrim
SER1369
NSP 3
2..Punching Net
SNC1219
4
Level Control Assy
SWL1003
5
Network Assy (HPF)
SWN1800
6
Network Assy (LPF)
(for S-IC691A)
SWN1807
(for S-IC891A)
SWN1799
7
Gasket (for CST)
FREC-105
NSP 8
Model Label
(for S-IC691A)
SAN4062
(for S-IC891A)
SAN4063
NSP 9
Gasket
SEC2032
(for S-IC691A Sub Frame-Frame)
NSP 10
Fastener (LPF NW) (for LPF)
SNA1516
NSP 11
Fastener (HPF NW) (for HPF)
SNA1517
NSP 12
Fastener (HPF NW) (for HPF)
SNA1518
13
Install Nail
SNK3039
NSP 14
Nail Stopper
SNK3040
NSP 15
Switch Cover
SNK3041
NSP 16
Frame
SNK3043
NSP 17
Sub Baffle
SNK3044
NSP 18
Sub Frame (for S-IC691A)
SNK3045
NSP 19
Boss Attachment (for S-IC891A)
SNK3047
NSP 20
Packing (Sub Baffle-Frame)
SEC2217
NSP 21
Packing (Sub Baffle-Frame)
SEC2218
NSP 22
Gasket (for SW Cover)
SEC2225
NSP 23
Gasket (for Fastener-LPF)
SEC2227
NSP 24
Gasket (for Fastener-HPF)
SEC2228
25
Gasket (for LPF)
SEC2237
26
Gasket (for HPF)
SEC2238
NSP 27
Packing (Sub Baffle-Frame)
SEC2243
NSP 28
Packing (Sub Baffle-Frame)
SEC2244
NSP 29
Packing (Sub Baffle-Frame)
SEC2245
30
Packing
SEC2256
31
Packing (for LPF)
SEC2257
32
Packing (for LPF)
SEC2258
NSP 33
Felt
SED1205
NSP 34
Felt
SED1206
NSP 35
Felt
SED1207
NSP 36
Felt
SED1208
NSP 37
Felt
SED1209
NSP 38
Felt
SED1212
39
Cushion
SEP1382
40
Back Cover (for WF)
(for S-IC691A)
SHC1880
(for S-IC891A)
SHC1881
NSP 41
Paper Tube 22
SMR1413
NSP 42
Acoustic Absorbent
SMT1385
NSP 43
Acoustic Absorbent
SMT1389
NSP 44
Acoustic Absorbent
SMT1390
NSP 45
Acoustic Absorbent
SMV2267
NSP 46
Acoustic Absorbent
SMV2269
NSP 47
Label Serial
SRW1117
48
Speaker (WF)
(for S-IC691A)
W16FU90-52D
(for S-IC891A)
B18IU60-53D
49
Speaker (CST)
W13NR40-52DX
50
Screw (for NF-Fastener)
BMZ40P120FTB
51
Screw (SUB BF.SW.SUB Frame)
BPZ40P100FTB
52
Screw (for Frame-SUB BF.)
BPZ40P160FTB
53
Screw (for Frame-SUB BF.)
BPZ40P200FTB
54
Nut (for HPF & LPF)
NB40FTB
55
Screw (for Install)
SBA1293
56
Eye Bolt M6
SBA1300
57
Hexagon Socket Screw
SBA1301
58
Screw (for LPF)
SBA1309
NSP 59
Fung Nut M6
SBN1075
60
Washer (for HPF & LPF)
WS40FTB
CS Assy Parts List
Mark No.
Description
Part No.
Mark No.
Description
Part No.
There is no drawing


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Network Assy (SWN1800)
R1
L2
C5
C1
C2
C4
C3
C7
L4
L3
L1
C6
Mid OUT
Tw OUT
P.SW:
P.SW has extreme positive resistance-temperature characteristics.
If an abnormal current flows to P.SW due to an excessive input or
unusual signal, P.SW heats up and the resistance rapidly increases.
With this function, the speakers are protected from excessive input
or unusual signal. The resistance value increases even when using
a soldering iron for repairing, so allow it to cool before using.
INPUT
0.56 F / 250 V / 150 V
27 F / 100 VW
68 F / 100 VW
27 F / 100 VW
2.7 F / 250 V / 150 V
0.56 F / 250 V / 150 V
8.2 F / 250 V / 150 V
0.022 mH
0.62 mH
0.4 mH
0.68 mH
1.0
3. SCHEMATIC DIAGRAM